ПРОВОЛОКА ДЛЯ МИКРОСВАРКИ

Изобретение относится к области металлургии, в частности к сплавам на основе золота и получению из них проволоки для микросварки. Сплав на основе золота содержит 99,9 весовых % золота и 1-1000 частей на миллион, в частности 10-100 частей на миллион кальция, 1-1000 частей на миллион, в частности 10-100 частей на миллион иттербия и/или европия, 1-100 частей на миллион мишметалла церия и 1-10 частей на миллион бериллия, при этом сплав закристаллизован в виде твердого раствора. Способ получения сплава на основе золота включает выплавление в вакууме однородной лигатуры, содержащей кальций, иттербий и/или европий, введение ее в золото, при необходимости с добавлением кальция, европия и/или иттербия, до получения лигатуры с золотом в качестве основного компонента, которую затем вводят в расплав золота совместно с другой лигатурой, содержащей золото в качестве основного компонента и легирующие добавки бериллия Be и мишметалла церия Се. Технический результат - получение сплава, характеризующегося ...

ИЗДЕЛИЯ ИЗ АЛЮМИНИЕВОГО СПЛАВА И СПОСОБЫ ИХ ПОЛУЧЕНИЯ

Изобретение относится к изделиям из алюминиевого сплава и способу их получения в виде полосы, которая, в частности, является заготовкой для корпусов банок или их торцов. Полоса из заэвтектического алюминиевого сплава, содержащего по меньшей мере 0,8 мас.% марганца и/или по меньшей мере 0,6 мас.% железа, имеет приповерхностную зону, расположенную от поверхности полосы алюминиевого сплава до глубины 37 микрометров, содержащую по меньшей мере 90% частиц от общего их количества в приповерхностной зоне, имеющих эквивалентный диаметр больше 0,22 и менее 3 микрометров, при их количестве на единицу площади по меньшей мере 0,01 частица на квадратный микрометр. По второму варианту частицы в приповерхностной зоне имеют эквивалентный диаметр больше 0,22 и менее 1 микрометра, при их объемной доле в приповерхностной зоне по меньшей мере 0,2 процента. Способ изготовления полосы включает непрерывное литье заэвтектического алюминиевого сплава, содержащего по меньшей мере 0,8 мас.% марганца и/или по меньшей ...

СПОСОБ ЗАКАЛКИ СТАЛЬНОЙ ТРУБЫ

Изобретение относится к области термической обработки. Для предотвращения образования закалочных трещин в стальной трубе осуществляют закалку трубы (1) из средне- или высокоуглеродистой стали или из мартенситной нержавеющей стали, включающую нагрев материала стальной трубы до температуры выше А,охлаждение посредством водяного охлаждения от наружной поверхности стальной трубы, причем концевые участки стальной трубы подвергают воздушному охлаждению, а по меньшей мере часть основного тела, не являющуюся концевыми участками трубы, подвергают водяному охлаждению, обеспечивая содержание мартенсита в материале стальной трубы, за исключением концевых участков, 80% об. или выше. В осевом направлении по меньшей мере в части основного тела, отличной от концевых участков трубы, предусмотрена зона или зоны, которые не подвергаются прямому водяному охлаждению по всему их периметру, пуск и остановку водяного охлаждения периодически повторяют по меньшей мере в части процесса закалки. Осуществляют усиленное ...

ПОЛУЧЕНИЕ СПЛАВОВ АЛЮМИНИЙ-СКАНДИЙ

Изобретение относится к способу получения сплавов на основе алюминия-скандия и может быть использовано в аэрокосмической промышленности, в частности для изготовления компонентов фюзеляжа методом сварки. Способ получения частиц сплава на основе алюминия-скандия из алюминия и хлорида скандия включает восстановление частиц хлорида скандия, имеющих средний размер менее чем 200 мкм, в присутствии частиц алюминия со средним размером в одном измерении менее 50 мкм прямой твердофазной реакцией в реакционной зоне в условиях реакции, обеспечивающей получение сплава на основе алюминия-скандия при минимальной температуре 160С и максимальной температуре от 600 до 1000С, с получением в результате частиц сплава на основе алюминия-скандия и хлорида алюминия в качестве побочного продукта. Изобретение направлено на упрощение способа получения сплава алюминий-скандий и улучшение его характеристик. 20 з.п. ф-лы, 8 ил., 6 пр.

МЕТАЛЛЫ СВАРНОГО ШВА С ВЫСОКОЙ ВЯЗКОСТЬЮ И ПРЕВОСХОДНЫМ СОПРОТИВЛЕНИЕМ ПЛАСТИЧЕСКОМУ РАЗРЫВУ

Изобретение относится к области металлургии, а именно к способам сварки ферритных сталей, и может быть использовано в конструкциях трубопроводов, имеющих деформированное состояние. Способ сварки трубопроводов из ферритных сталей включает определение химического состава расходуемой присадочной проволоки и заданного химического состава металла сварного шва, сварку основного металла трубопровода с использованием присадочной проволоки дуговой сваркой металлическим электродом в защитном газе с использованием подачи энергии в форме импульсных колебаний. Металл сварного шва содержит, мас.%: 0,02-0,12 углерода, 7,50-14,50 никеля, не более 1,00 марганца, не более 0,30 кремния, не более 150 ч./млн кислорода, не более 100 ч./млн серы, не более 75 ч./млн фосфора, остальное - железо. Металл сварного шва содержит остаточный аустенит и имеет ячеистую микроструктуру, содержащую стенки ячеек и внутренние части ячеек, причем стенки ячеек тверже внутренних частей ячеек. Обеспечиваются высокие характеристики ...

НОВАЯ КОНЦЕПЦИЯ ВЫСОКОТЕМПЕРАТУРНОЙ ПАЙКИ

Изобретение относится к области металлургии, а именно к высокотемпературной пайке. Механическая смесь частиц порошков для высокотемпературной пайки изделия содержит по меньшей мере один источник бора и по меньшей мере один источник кремния. Частицы имеют средний размер менее чем 250 мкм, каждая частица является источником кремния или источником бора. Механическая смесь содержит бор и кремний в массовом соотношении бора к кремнию в диапазоне от 5:100 до 1:1; кремний и бор присутствуют совместно в механической смеси в концентрации по меньшей мере 25 мас.%. По меньшей мере один источник бора и по меньшей мере один источник кремния являются бескислородными за исключением неизбежных количеств загрязняющего кислорода, составляющих менее чем 10 мас.%. Упрощается процесс пайки при сокращении количества тугоплавких присадок. 10 н. и 29 з.п. ф-лы, 6 ил., 19 табл., 13 пр.

СТАЛЬ, ПРОДУКТ, ПРОИЗВЕДЕННЫЙ ИЗ ТАКОЙ СТАЛИ, И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ

Сталь, характеризующаяся тем, что ее состав, мас. %, представляет собой: 10,0≤Ni≤24,5; 1,0≤Mo≤12,0; 1,0≤Со≤25,0; 20,0≤Мо+Со+Si+Mn+Cu+W+V+Nb+Zr+Ta+Cr+C≤29,0; Со+Мо≥20,0; Ni+Co+Mo≥29; следовые количества≤Al≤4,0; следовые количества≤Ti≤0,1; следовые количества≤N≤0,0050; следовые количества≤Si≤2,0; следовые количества≤Mn≤4,0; следовые количества≤C≤0,03; следовые количества≤S≤0,0020; следовые количества≤Р≤0,005; следовые количества≤В≤0,01; следовые количества≤Н≤0,0005; следовые количества≤О≤0,0025; следовые количества≤Cr≤5,0; следовые количества≤Cu≤2,0; следовые количества≤W≤4,0; следовые количества≤Zr≤4,0; следовые количества≤Ca≤0,1; следовые количества≤Mg≤0,1; следовые количества≤Nb≤4,0; следовые количества≤V≤4,0; следовые количества≤Ta≤4,0; остаток - железо и неизбежные примеси. Техническим результатом является изготовление стали с улучшенными механическими свойствами. 8 н. и 27 з.п. ф-лы, 3 ил., 7 табл.

СПОСОБ ИЗГОТОВЛЕНИЯ ГОРЯЧЕФОРМОВАННОЙ СТАЛЬНОЙ ДЕТАЛИ И ГОРЯЧЕФОРМОВАННАЯ СТАЛЬНАЯ ДЕТАЛЬ

Изобретение относится к области металлургии. Для улучшения формовочной способности стального материала с обеспечением минимальной прочности на разрыв изготовление детали осуществляют путем горячей формовки начального продукта из стали, причем начальный продукт нагревают до температуры выше 60°С и ниже температуры превращения Acи затем выполняют формовку в данном температурном диапазоне, причем деталь имеет минимальную прочность на разрыв 700 МПа и высокое удлинение при разрушении, при этом начальный продукт имеет следующий состав стали в мас.%: С: от 0,0005 до 0,9; Mn: от более 3,0 до 12; при этом остаток – железо с неизбежными сопутствующими стали элементами, при легировании в качестве опции по меньшей мере один из следующих элементов (в мас.%): Al до 10; Si до 6; Cr до 6; Nb до 1,5; V до 1,5; Ti до 1,5; Mo до 3; Cu до 3; Sn до 0,5; W до 5; Co до 8; Zr до 0,5; Ta до 0,5; Te до 0,5; B до 0,15; P макс. 0,1, в частности < 0,04; S макс 0,1, в частности < 0,02; N макс. 0,1, в частности < 0,05 ...

СПЛАВ НА ОСНОВЕ МАГНИЯ И СПОСОБ ЕГО ПОЛУЧЕНИЯ

Изобретение относится к сплавам на основе магния, в частности к составу магниевых сплавов и способам их получения, которые находят широкое применение в автомобильной промышленности. Предложен сплав на основе магния, содержащий следующие компоненты, вес.%: алюминий 2,5-3,4, цинк 0,11-0,25, марганец 0,24-0,34, кремний 0,8-1,1, магний - остальное. Предложен способ, включающий загрузку компонентов, заливку расплавленного магния и введение титансодержащего плава с флюсом при постоянном перемешивании. Загрузку легирующих компонентов: алюминия, цинка, марганца и кремния осуществляют в виде твердой лигатуры алюминий-цинк-марганец-кремний. Затем проводят заливку расплавленного магния, а перед введением титансодержащего плава с флюсом расплав нагревают, проводят выдержку при перемешивании. В частных воплощениях изобретения соотношение лигатуры к магнию составляет 1:(18-20), расплав нагревают до 720-740oС; выдержку проводят в течение 1-1,5 ч. Техническим результатом изобретения является снижение себестоимости ...

ОБРАБАТЫВАЕМЫЙ РЕЗАНИЕМ СПЛАВ НА ОСНОВЕ МЕДИ И СПОСОБ ЕГО ПОЛУЧЕНИЯ

Изобретение относится к сплавам на основе меди, в частности к медным сплавам, легко обрабатываемым точением, резкой или фрезерованием, и может быть использовано для изготовления соединителей, электромеханических или микромеханических деталей. Сплав содержит между 1% и 20% по весу Ni, между 1% и 20% по весу Sn, между 0,5% и 3% по весу Рb, между 0,01% и 5% по весу В, Сu составляет по меньшей мере 50% от веса сплава. Изобретение относится также к металлическому продукту, изготовленному из заявленного сплава и имеющему механическую прочность при комнатной температуре 700-1500 МПа. Изобретение позволяет повысить прочность на растяжение сплава и улучшить обрабатываемость резанием. 3 н. и 14 з.п. ф-лы, 4 табл., 2 ил.

МЕДНЫЙ ЛИТЕЙНЫЙ СПЛАВ ДЛЯ АСИНХРОННЫХ МАШИН

Изобретение относится к медным литейным сплавам и может быть использовано для изготовления методом литья токопроводящих конструкционных деталей, в частности короткозамкнутых роторов для асинхронных машин. Литейный медный сплав содержит, мас.%: Ag от 0,05 до 0,5, в каждом случае от 0,05 до 0,5 по меньшей мере двух элементов из группы, состоящей из Ni, Zn, Sn и Al, необязательно от 0,01 до 0,2 одного или нескольких элементов из группы, которая состоит из Mg, Ti, Zr, B, P, As, Sb, Cu, и неизбежные примеси – остальное. Кроме того, изобретение относится к токопроводящей конструкционной детали, а также к короткозамкнутому ротору с многочисленными проводящими стержнями и двумя замыкающими кольцами, которые отлиты из медного сплава в виде цельной детали. Изобретение направлено на повышение прочности и проводимости токопроводящих конструкционных деталей, а также улучшение литейных качеств медного сплава. 3 н. и 11 з.п. ф-лы, 1 табл.

СПОСОБ ПРОИЗВОДСТВА ТАНТАЛОВЫХ СПЛАВОВ

Группа изобретений относится к производству танталовых сплавов. Формируют смесь реагентов, содержащую порошок пентаоксида тантала, порошок пероксида бария, порошок металлического алюминия, порошок металлического вольфрама и по меньшей мере один порошок, выбранный из группы, состоящей из порошка оксида железа (III) и порошка оксида меди (II). Помещают слой порошка оксида магния в графитовую реакционную емкость на, по меньшей мере, поверхность дна. Поверх слоя порошка оксида магния помещают смесь реагентов. Приводят запальный провод из тантала или танталового сплава в контакт со смесью реагентов. Герметизируют реакционную емкость внутри реакционной камеры, создают вакуум внутри реакционной камеры и запитывают запальный провод для обеспечения инициирования алюминотермических реакций между компонентами с получением продуктов реакции, содержащих монолитный и полностью консолидированный королек танталового сплава, содержащий вольфрам, и отдельную шлаковую фазу, содержащую оксид алюминия и оксид ...

СПОСОБ СОЕДИНЕНИЯ МЕТАЛЛИЧЕСКИХ ДЕТАЛЕЙ

Изобретение может быть использовано для соединения металлических деталей, имеющих температуру солидуса выше 1100°C. На поверхность (15) первой металлической детали (11) наносят подавляющий плавление состав (14), содержащий подавляющий плавление компонент, включающий по меньшей мере 25 мас.% бора и кремния для снижения температуры плавления первой металлической детали (11). Приводят вторую металлическую деталь (12) в контакт с подавляющим плавление составом (14) в контактной точке (16). Нагревают металлические детали (11, 12) до температуры выше 1100°C. Обеспечивают плавление поверхностного слоя первой металлической детали с образованием вместе с упомянутым компонентом металлического слоя в контакте со второй металлической деталью. Получают соединение (25) в контактной точке (16). Изобретение обеспечивает получение простым и надежным способом прочного соединения между металлическими деталями. 3 н. и 25 з.п. ф-лы, 19 ил., 14 табл., 5 пр.

Способ получения трёхслойной электропроводящей проволоки

Изобретение относится к изготовлению металлических проводников и касается способа получения трехслойной электропроводящей проволоки. Осуществляют расплавление алюминиевого сплава заявленного состава и литье сердечника из алюминиевого сплава. Затем изготавливают трехслойную сборку из алюминиевого сердечника и концентрических втулок из меди и серебра, причем отношение толщины слоя меди к слою серебра (H:H) в сборке устанавливают равным 1:(1-1,75), и одинаковым по длине проволоки. Затем осуществляют операции прессования в пруток и волочения на проволоку. Предложенное изобретение обеспечивает получение проволоки со стабильными механическими свойствами и высоким уровнем электропроводности в условиях длительной работы при температуре порядка 250°С. 2 з.п. ф-лы, 1 табл., 3 пр.

Способ приготовления и подачи защитной газовой смеси для плавки магниевых сплавов

Изобретение относится к области металлургии, конкретно к плавке и литью сплавов на основе магния, и может быть использовано для получения фасонных отливок, например, корпусов различных агрегатов, используемых в аэрокосмической отрасли и в других отраслях промышленности. Способ приготовления и подачи защитной газовой смеси газа-носителя, инертного или малоактивного по отношению к расплаву, и газообразного перфторэтилизопропилкетона при плавке магниевых сплавов включает получение газовой смеси, содержащей перфторэтилизопропилкетон в количестве 0,1-10% от объема подаваемой газовой смеси, непосредственно в подводящей трубке, подающей газовую смесь к плавильному тиглю, посредством смешения газа-носителя и газообразного перфторэтилизопропилкетона, получаемого испарением его жидкой фазы, подводимой самотеком капельным способом через капиллярный ввод непосредственно в подводящую трубку, за счет конвективной передачи тепла от металла в тигле. Изобретение направлено на создание способа приготовления ...

СПОСОБ ПОЛУЧЕНИЯ ЛИГАТУРЫ "АЛЮМИНИЙ - ГАДОЛИНИЙ"

Изобретение относится к металлургическим технологиям в области редких и цветных металлов и представляет собой способ получения лигатуры алюминий-гадолиний. Способ включает восстановление фторида гадолиния расплавленным алюминием из шихты, содержащей фторид гадолиния, хлорид калия, хлорид и фторид натрия. Обменный процесс производят при температуре 750°С в контейнерах из стеклоуглерода в атмосфере инертного газа. Полученный расплав выдерживают в течение не менее 6 часов. Изобретение позволяет сократить количество проводимых операций, уменьшить энергетические затраты и удобно отделять конечный продукт от шлака. 2 пр.

ВЫСОКОПРОЧНЫЙ ОДНОРОДНЫЙ СПЛАВ МЕДИ-НИКЕЛЯ-ОЛОВА И СПОСОБ ЕГО ПОЛУЧЕНИЯ

Изобретение относится к спинодальным сплавам медь-никель-олово и способам их получения. Сплав медь-никель-олово, содержащий 8-20 мас.% никеля и 5-11 мас.% олова, получен литьем под давлением и имеет по меньшей мере 40%-ную пластичность и 0,2% условный предел текучести по меньшей мере 25 ksi. Способ получения высокопрочного сплава медь-никель-олово включает приготовление расплавленной смеси меди, никеля и олова, литье под давлением с образованием отливки и термическую обработку отливки путем нагрева при температуре от примерно 1500°F до примерно 1625°F в течение периода времени от примерно 4 часов до примерно 24 часов. Изобретение направлено на повышение однородности и прочности спинодальных медь-никель-оловянных сплавов. 5 н. и 12 з.п. ф-лы, 3 ил., 1 пр., 4 табл.

СПЛАВ ЛАТУНИ, ВКЛЮЧАЮЩИЙ КЕРАМИЧЕСКИЕ НАНОЧАСТИЦЫ ОКСИДА АЛЮМИНИЯ, КОТОРЫЙ ОБЛАДАЕТ УЛУЧШЕННЫМИ СВОЙСТВАМИ В ОТНОШЕНИИ МЕХАНИЧЕСКОЙ ОБРАБОТКИ

Изобретение относится к сплавам латуни и может быть использовано для изготовления изделий в электротехнической, машиностроительной и автомобильной промышленности. Сплав латуни содержит Cu, Zn, 0-0,25% мас. Pb и 0,04-0,1% мас. AlO, при этом AlOприсутствует в сплаве в форме керамических наночастиц. Сплав латуни может дополнительно содержать As, добавки Sn, Fe, Al, Ni, Mn и/или Si. Способ получения сплава латуни включает добавление наночастиц AlOв начале процесса плавления в плавильную ванну, содержащую латунный лом, при этом указанный латунный лом в плавильной ванне содержит количество компонентов, соответствующее заданному составу сплава латуни. Изобретение направлено на улучшение способности к обработке резанием бессвинцовистой латуни. 5 н. и 16 з.п. ф-лы, 7 ил., 1 табл., 2 пр.

СПОСОБ ПОЛУЧЕНИЯ СИЛУМИНОВ

Использование: получение алюминиево-кремниевых сплавов плавлением. Сущность изобретения: в расплав алюминия вводят шлак производства алюминия и его сплавов или алюминийсодержащие съемы при 750-780oC и кварцевый песок в количестве, обеспечивающем поддержание весового отношения кварцевого песка и присадки в реакционной смеси на уровне 0,4-0,9, предпочтительно 0,65-0,73. Расплав выдерживают в течение 20-40 мин и цикл обработки повторяют. Технический результат: прочность получаемых силуминов возрастает на 10-15%, а пластичность - в 2-2,3 раза. 2 з.п. ф-лы, 1 табл.

Способ двухэтапного получения сплава TiMoNbZrAl

Изобретение относится к области металлургии, а именно к получению слитков титанового сплава TiMoNbZrAl, который содержит, мас.%: ниобий 0,5, молибден 0,5, цирконий 3,0, алюминий 3,0, титан остальное. На первом этапе укладывают навески исходных ниобия, молибдена, циркония и алюминия в медный водоохлаждаемый поддон вакуумной электродуговой печи, при этом на дно поддона укладывают алюминий, на него ниобий, молибден и цирконий, в дополнительную лунку укладывают являющийся геттером цирконий, печь вакуумируют до остаточного давления 10-3 мм рт.ст. и наполняют аргоном высокой чистоты, зажигают дугу между нерасходуемым электродом и циркониевым геттером для удаления возможных примесей, в том числе кислорода, в инертном газе, затем производят расплавление исходных материалов до получения единого слитка. На втором этапе укладывают в лунку титан, на него слиток, полученный на первом этапе, печь вакуумируют до остаточного давления 10-3 мм рт.ст. и наполняют аргоном высокой чистоты, зажигают дугу между ...

СПОСОБ ПОЛУЧЕНИЯ ЛИГАТУРЫ АЛЮМИНИЙ-ТИТАН

Изобретение относится к области металлургии, в частности к технологии приготовления модифицирующих лигатур алюминий-титан, которые применяются при приготовлении алюминиевых сплавов для измельчения структуры отливаемых из них изделий. В способе измельчение частиц алюминида титана TiAlпроисходит за счет введения в лигатуру при ее расплавлении в вакуумной индукционной высокочастотной печи при 1100-1200°C и разрежении 0,799-1,066 Па до 0,05 мас.% нанопорошка нитрида тантала TaN, содержащегося в объеме отпрессованного прутка, состоящего из композиции частиц алюминия и нанопорошка нитрида тантала TaN, с последующей разливкой лигатуры в изложницы без снятия вакуума. Изобретение позволяет использовать лигатуру для измельчения структуры литейных сплавов, модифицирующим агентом в которой являются частицы интерметаллического соединения алюминида титана TiAl. 1 з.п. ф-лы, 1 пр.,1 табл.

СПОСОБ ИЗГОТОВЛЕНИЯ ЛИСТА ИЗ ЭЛЕКТРОТЕХНИЧЕСКОЙ СТАЛИ С ОРИЕНТИРОВАННОЙ ЗЕРЕННОЙ СТРУКТУРОЙ

Изобретение относится к области металлургии. Для обеспечения благоприятных значений потерь в сердечниках на холоднокатаном стальном листе образуют резистную пленку для изготовления канавки путем травления, при этом в резистной пленке образуют открытую часть стального листа, содержащую первую область, ориентированную в направлении ширины листа, и множество вторых областей, начинающихся от первой области, причем ширина первой области и вторых областей составляет от 20 мкм до 100 мкм, и расстояние от концевой части одной из вторых областей до концевой части смежной с ней другой области из вторых областей составляет от 60 мкм до 570 мкм. 2 з.п. ф-лы, 7 ил., 1 табл.

СПОСОБ ПОЛУЧЕНИЯ ЛИГАТУРЫ МАГНИЙ-НЕОДИМ

Изобретение относится к области металлургии цветных металлов, в частности к получению магниевых лигатур с неодимом, которые могут быть использованы в качестве легирующих и модифицирующих добавок в производстве сплавов на основе магния и алюминия, а также в качестве легирующих добавок при производстве чугунов и сталей. Способ включает введение в жидкий магний смеси фторида неодима с флюсом. В качестве флюса используют смесь хлорида калия, хлорида натрия, хлорида кальция, хлорида магния и фторида кальция. Расплавляют полученную смесь и осуществляют перемешивание со скоростью от 150 до 350 об/мин при температуре от 710 до 770°С и времени выдержки от 20 до 40 мин с обеспечением полной обменной реакции расплавленных солей и магния с получением лигатуры. Осуществляют отстаивание, после чего полученную лигатуру разливают в изложницы, а оставшуюся смесь солей отправляют на повторный переплав. Техническим результатом является повышение степени извлечения неодима в магниевую лигатуру. 5 пр.

Способ получения слитков из деформируемых алюминиевых сплавов

Изобретение относится к металлургии, а именно к обработке кристаллизующегося металла давлением, в частности к получению слитков из деформируемых алюминиевых сплавов. Способ получения слитков из деформируемых алюминиевых сплавов включает приготовление расплава, перегретого выше температуры ликвидус на 150-200°C, заливку расплава в изложницу и опрессовку плунжером с использованием компенсатора усадки, при этом расплав мерной дозой заливают в предварительно заполненную инертным газом и прогретую до 200-250°С изложницу, закрывают изложницу крышкой, в отверстие которой устанавливают с плотной посадкой компенсатор усадки, выполненный в виде цилиндрической заготовки из сплава того же химического состава, что и обрабатываемый сплав и имеющий объем не менее 120-130 смна 1 мжидкого металла, который затем посредством прессующего плунжера подают непрерывно в жидкий металл до конца кристаллизации со скоростью и под давлением, которые обеспечивают сжатие жидкого металла на 12-13% от общего объема, при ...

СПОСОБ ПОЛУЧЕНИЯ КАРБОНИТРИДА ЦИРКОНИЯ Zr2CN кубической системы

Изобретение относится к области получения тугоплавких соединений, конкретно к способу получения карбонитрида циркония Zr2CN кубической системы. Способ включает азотирование карбида циркония. Процесс азотирования проводят в атмосфере аргона при температуре 1400-2100°С, а в качестве азотирующего агента используют нитрид магния при следующем соотношении компонентов, мас.ч.: карбид циркония - 100-120, нитрид магния - 25-250. Предлагаемый способ позволяет повысить выход карбонитрида циркония. 1 табл.

Электродуговой способ получения слитков Ti2MnAl

Изобретение относится к области металлургии, в частности к получению сплава Гейслера в виде слитков, пригодных для изучения свойств спин-поляризованного бесщелевого полупроводника Ti2MnAl. Способ получения слитков сплава Ti2MnAl из смеси алюминия, марганца и титана включает подготовку смеси алюминия, марганца и титана и ее плавление. Подготовленную смесь засыпают в тигель и осуществляют плавление в гарнисаже плазмой дугового разряда напряжением от 65 до 70 В и током от 8 до 10 А в атмосфере гелия при давлении от 0,8 до 1 атм в течение 20 минут с последующим снижением мощности до нуля. Обеспечивается равномерная кристаллизация слитка. 9 пр., 2 ил.

РЕНТГЕНОВСКАЯ МИШЕНЬ ИЗ СПЛАВА МОЛИБДЕНА, ИМЕЮЩАЯ ОДНОРОДНУЮ СТРУКТУРУ ЗЕРЕН

... 1. Способ изготовления молибденовой пластины, обработанной в поперечном направлении, содержащий (a) восстановление молибдата аммония и формование металлического порошка молибдена, (b) уплотнение молибденового компонента, состоящего из металлического порошка молибдена и легирующего элемента с получением первой заготовки, причем легирующий элемент выбирают из группы, состоящей из титана, циркония, гафния, углерода, окиси лантана и их комбинаций, (c) термическую обработку первой заготовки и воздействие на заготовку термомеханическими силами в первом направлении, формируя таким образом вторую заготовку, (d) термическую обработку второй заготовки и воздействие на вторую заготовку термомеханическими силами во втором направлении, которое отличается от первого направления (e) обработку термомеханически обработанной второй заготовки на этапе тепловой обработки рекристаллизации, формируя таким образом термически обработанную и обработанную в поперечном направлении заготовку и (f) обработку обработанной ...

ЛИГАТУРА ДЛЯ АЛЮМИНИЕВЫХ СПЛАВОВ

Изобретение относится к металлургии и может быть использовано при получении лигатур для легирования и модифицирования алюминиевых сплавов, содержащих цирконий и титан. Лигатура для алюминиевых сплавов систем Al-Zn-Mg-Cu и Al-Cu-Mg содержит, мас.%: медь 27-33, цирконий 3,5-4,5, титан 0,5-2,0, алюминий и неизбежные примеси остальное. Изобретение позволяет улучшить структуру слитков, снизить склонность к горячеломкости за счет уменьшенного содержания кремния, уменьшить объем шихтовых материалов и время их приготовления. 4 табл.

СПОСОБЫ И СИСТЕМЫ ДЛЯ ПОЛУЧЕНИЯ ФЕРРОХРОМА В ДУПЛЕКСНОЙ ПЕЧИ

СПОСОБ ПОЛУЧЕНИЯ ФЕРРОВОЛЬФРАМА НА ОСНОВЕ ВОССТАНОВЛЕНИЯ САМОРАСПРОСТРАНЯЮЩЕГОСЯ ГРАДИЕНТА АЛЮМИНОТЕРМИИ И РАФИНИРОВАНИЯ ШЛАКА

Изобретение относится к области металлургии и может быть использовано при получении ферровольфрама алюминотермическим самораспространяющимся градиентом восстановления. Способ включает разделение сырьевых материалов, содержащих порошок оксидов вольфрама и железа и шлакообразующие компоненты, на несколько партий, помещение первой партии сырьевых материалов в реакционную печь, воспламенение размещенного поверх сырьевых материалов магниевого порошка для проведения алюминотермического восстановления с непрерывным добавлением партий сырьевых материалов до завершения реакции и получения высокотемпературного расплава, или упомянутые сырьевые материалы постепенно помещают в смеситель при постоянной скорости с постепенным добавлением алюминиевого порошка, перемешанные сырьевые материалы помещают в реакционную печь для проведения алюминотермического восстановления. Осуществляют теплоизоляционную выплавку посредством электромагнитного индукционного нагревания для получения шлака окиси базового алюминия ...

СПЛАВ НА ОСНОВЕ ТИТАНА

Изобретение относится к области металлургии, а именно к сплавам на основе титана, используемым для изготовления высокопрочных и высокотехнологичных изделий. Сплав на основе титана состоит из алюминия, ванадия, молибдена, железа, кислорода. При этом компоненты сплава взяты в следующем соотношении, мас.%: алюминий 3,5-4,4, ванадий 2,0-4,0, молибден 0,1-0,8, железо max 0,4, кислород max 0,25, титан остальное. Технический результат - создание универсального сплава для крупногабаритных поковок и штамповок, тонколистового проката и фольги с необходимыми прочностными и пластическими характеристиками и структурой. 2 табл.

ИЗДЕЛИЯ ИЗ АЛЮМИНИЕВО-МЕДНО-ЛИТИЕВОГО СПЛАВА С УЛУЧШЕННЫМИ УСТАЛОСТНЫМИ СВОЙСТВАМИ

Изобретение относится к прокатным изделиям из алюминиево-медно-литиевых сплавов, которые могут быть использованы для производства конструкционных элементов. Способ изготовления плиты толщиной по меньшей мере 80 мм включает получение ванны жидкого металла из сплава, содержащего, мас.%: Cu 2,0-6,0; Li 0,5-2,0; Mg 0-1,0; Ag 0-0,7; Zn 0-1,0 и по меньшей мере один элемент, выбранный из группы Zr, Mn, Cr, Sc, Hf и Ti, причем количество упомянутых элементов составляет от 0,05 до 0,20 Zr, от 0,05 до 0,8 Mn, от 0,05 до 0,3 Cr, от 0,05 до 0,3 Sc, от 0,05 до 0,5 Hf и от 0,01 до 0,15 Ti, Si ≤ 0,1; Fe ≤ 0,1; примеси ≤ 0,15 в сумме и ≤ 0,05 каждой, остальное - алюминий, при этом содержание водорода в ванне поддерживают ниже 0,4 мл/100 г, а содержание кислорода, измеренное над поверхностью расплава, ниже 0,5 об.%, полунепрерывную вертикальную разливку с использованием распределителя, выполненного из углеродной ткани, гомогенизацию сляба до или после необязательной механической обработки, горячую прокатку ...

СПОСОБ ПОЛУЧЕНИЯ ЛИГАТУРЫ АЛЮМИНИЙ-ЭРБИЙ

Изобретение относится к области металлургии цветных металлов, в частности к получению лигатур и сплавов алюминия с редкоземельными металлами, и может быть использовано для получения лигатуры алюминий-эрбий. В способе готовят исходную шихту в порошкообразном состоянии при следующем соотношении компонентов, мас. %: фторид эрбия 20-45; фторид натрия 10-22; хлорид калия 37-68, смешивают шихту с алюминием в виде гранул с обеспечением массового отношения шихты к алюминию от 0,2 до 0,75, помещают полученную реакционную смесь в графитовый тигель, проводят ее нагрев и расплавление с выдержкой расплава при температуре 750-850°С в течение 30-60 минут при периодическом перемешивании для осуществления алюминотермического восстановления, и осуществляют разливку отдельно солевого расплава и жидкой лигатуры в изложницы. Изобретение обеспечивает получение лигатуры с различным содержанием компонента и равномерным распределением интерметаллидов алюминия по всему объему, упрощает технологический процесс, подобранный ...

Способ получения высоколегированного жаропрочного сплава ХН62БМКТЮ на никелевой основе

Изобретение относится к области металлургии, а именно к способам получения жаропрочного сплава на никелевой основе ХН62БМКТЮ с использованием некондиционных отходов. Способ получения высоколегированного жаропрочного никелевого сплава ХН62БМКТЮ включает подготовку шихтовых материалов, содержащих первичную шихту, кондиционные и некондиционные отходы, очистку некондиционных отходов от технических и механических примесей и вакуумный дуговой переплав шихты. После очистки от технических и механических примесей проводят восстановительную плавку некондиционных отходов в дуговой печи постоянного тока с продувкой расплава кислородом с обеспечением содержания углерода 0,02÷0,05% и кремния 0,09÷0,12% и с последующим отделением шлака. Осуществляют присадку кондиционных отходов собственного производства в полученный расплав и корректировку химического состава расплава введением молибдена, никеля, хрома, кобальта и ниобия с получением электрода паспортной шихтовой рафинированной заготовки (ПШРЗ). Затем ...

ПРОВОЛОКА ДЛЯ МИКРОСВАРКИ

... 1. Сплав золота, содержащий 99 вес.%, в частности, 99,9 вес.% золота, и 1-1000 ч. млн, в частности, 10-100 ч. млн кальция, а также 1-1000 ч. млн, в частности, 10-100 ч. млн иттербия или европия, или смеси иттербия с европием, отличающийся тем, что сплав золота сформирован в виде смешанного кристалла. ! 2. Способ получения однородного однофазного сплава золота, содержащего европий и/или иттербий, отличающийся тем, что европий или иттербий, или европий и иттербий в виде однородной лигатуры, состоящей только из легирующих добавок, растворяют в золоте. ! 3. Способ по п.2, отличающийся тем, что однородная лигатура является кальциевой лигатурой. ! 4. Проволока для микросварки, содержащая 99,9 вес.% золота, и 1-1000 ч. млн, в частности, 10-100 ч. млн кальция, а также 1-1000 ч. млн, в частности, 10-100 ч. млн иттербия или европия, или смеси иттербия с европием, отличающаяся тем, что сплав золота сформирован в виде смешанного кристалла.

ВЫСОКОПРОЧНЫЕ АЛЮМИНИЕВЫЕ СПЛАВЫ СЕРИИ 7ХХХ И СПОСОБЫ ИХ ИЗГОТОВЛЕНИЯ

АЛЮМИНИЕВО-АЛМАЗНЫЙ КОМПОЗИЦИОННЫЙ МАТЕРИАЛ И СПОСОБ ЕГО ПОЛУЧЕНИЯ

... 1. Алюминиево-алмазный композиционный материал в форме ! пластины, включающей зерна алмаза и металл, содержащей алюминий в качестве основного компонента, при этом ! - упомянутый алюминиево-алмазный композиционный материал состоит из участка композита и поверхностных слоев, нанесенных на обе поверхности упомянутого участка композита, ! - упомянутые поверхностные слои состоят из материала, включающего металл, основным компонентом которого является алюминий, ! - упомянутые зерна алмаза содержатся в количестве, составляющем от 40% до 70% об. от всего алюминиево-алмазного композиционного материала. ! 2. Алюминиево-алмазный композиционный материал по п.1, в котором упомянутый поверхностный слой состоит из алюминиево-керамического композиционного материала. ! 3. Алюминиево-алмазный композиционный материал по п.1 или 2, в котором упомянутый поверхностный слой содержит металл, основным компонентом которого является алюминий, в количестве, составляющем, по меньшей мере, 80% об. !4. Алюминиево-алмазный ...

Гранулирование расплавленного феррохрома

ВЫСОКОПРОЧНЫЙ ТИТАНОВЫЙ СПЛАВ С АЛЬФА-БЕТА-СТРУКТУРОЙ

СПОСОБ ИЗГОТОВЛЕНИЯ ПРЕДМЕТОВ ИЗ СПЛАВОВ ДРАГОЦЕННЫХ МЕТАЛЛОВ

... 1. Способ изготовления предмета из биосовместимого сплава драгоценного металла, сделанного из сплава драгоценного металла, причем способ содержит стадию (100) формирования предмета из биосовместимого сплава драгоценного металла в технологической камере (11) и стадию, по меньшей мере во время упомянутого формирования, (101) обеспечения технологического газа заданного состава в технологической камере (11), отличающийся тем, что технологический газ имеет содержание воды менее 0,005 кг Н2О на кг технологического газа и содержание кислорода менее 5%. ! 2. Способ по п.1, в котором стадия формирования содержит стадии (102) совместного расплавления сплавляемых элементов с образованием сплава драгоценного металла и (103) литья расплавленных сплавляемых элементов сплава драгоценного металла. ! 3. Способ по п.1 или 2, в котором стадия формирования содержит стадию (111) последующей обработки сплава драгоценного металла в технологической камере (11) для формирования предмета из биосовместимого сплава ...

ВЫСОКОПРОЧНАЯ МНОГОФАЗНАЯ СТАЛЬ ДЛЯ ХОЛОДНО- ИЛИ ГОРЯЧЕКАТАНОЙ СТАЛЬНОЙ ПОЛОСЫ И СПОСОБ ИЗГОТОВЛЕНИЯ ХОЛОДНО- И ГОРЯЧЕКАТАНОЙ СТАЛЬНОЙ ПОЛОСЫ

... 1. Высокопрочная многофазная сталь для холодно- или горячекатаной стальной полосы с отличными формовочными свойствами, в частности для автомобилестроения на основе облегченных конструкций, состоящая из элементов, вес.%:C - 0,060 до ≤0,115Al - 0,020 до ≤0,060Si - 0,100 до ≤0,500Mn - 1,300 до ≤2,500P - ≤0,025S - ≤0,0100Cr - 0,280 до ≤0,480Mo - ≤0,150Ti - ≥0,005 до ≤0,050Nb - ≥0,005 до ≤0,050B - ≥0,0005 до ≤0,0060N - ≤0,0100железо - остальное,включая обычные сопутствующие стали, не упомянутые выше элементы.2. Сталь по п.1, отличающаяся тем, что содержание Mo составляет ≤0,100%.3. Сталь по п.1 или 2, отличающаяся тем, что содержание Mo составляет ≥0,050%.4. Сталь по п.1, отличающаяся тем, что содержание Nb составляет ≤0,045%.5. Сталь по п.1, отличающаяся тем, что содержание Nb составляет ≤0,040%.6. Сталь по п.1, отличающаяся тем, что содержание Ti составляет ≤0,045%.7. Сталь по п.1, отличающаяся тем, что содержание Ti составляет ≤0,040%.8. Сталь по п.1, отличающаяся тем, что содержание В составляет ...

МОНОКРИСТАЛЛИЧЕСКИЙ МАТЕРИАЛ ИНТЕРМЕТАЛЛИЧЕСКОГО СОЕДИНЕНИЯ ТИТАНА И АЛЮМИНИЯ И МЕТОДЫ ЕГО ПОЛУЧЕНИЯ

СПОСОБ ПОЛУЧЕНИЯ БАЗОВЫХ β-γ-TiAl-СПЛАВА

... 1. Способ получения базового γ-TiAl-сплава с помощью вакуумной дуговой переплавки, при котором затвердевание этого базового γ-TiAl-сплава происходит через β-фазу (базовый β-γ-TiAl-сплав),характеризующийся следующими стадиями:- формирование базового плавящегося электрода путем плавки с помощью по меньшей мере одной стадии вакуумной дуговой переплавки, обычного первичного γ-TiAl-сплава, содержащего титан и/или по меньшей мере один β-стабилизирующий элемент в недостаточном по сравнению с получаемым базовым β-γ-TiAl-сплавом количестве,- размещение на упомянутом базовом плавящемся электроде титана и/или β-стабилизирующего элемента в количестве, соответствующем упомянутому недостающему количеству титана и/или β-стабилизирующего элемента, с равномерным распределением по длине и периферии базового плавящегося электрода,- добавление к базовому плавящемуся электроду упомянутого размещаемого количества титана и/или β-стабилизирующего элемента с обеспечением получения однородного базового β-γ-TiAl-сплава ...

АЛЮМИНИЕВЫЙ СПЛАВ И СПОСОБ ОТВЕРЖДЕНИЯ АЛЮМИНИЕВОГО СПЛАВА

Алюминиевый сплав, содержащий по крайней мере один металл, принадлежащий к группе, включающей висмут, кадмий, индий и свинец, в количестве выше максимальной растворимости этих металлов в твердом алюминии, отличается тем, что более 80 мас. % этих введенных металлов высокодиспергированы в твердой алюминиевой матрице в форме глобул или кристаллов размером менее 5 мкм. Такой сплав получают путем механического или электромагнитного перемешивания сплава в процессе отверждения, и в случае непрерывной отливки жидкого сплава перемешивание достигается за счет переменного магнитного поля, коаксиального к оси непрерывной отливки.

ТЕРМОСТОЙКИЙ СПЛАВ НА ОСНОВЕ АЛЮМИНИЯ И СПОСОБ ПОЛУЧЕНИЯ ИЗ НЕГО ДЕФОРМИРОВАННЫХ ПОЛУФАБРИКАТОВ

... 1. Сплав на основе алюминия, содержащий медь, марганец, цирконий, кремний, железо и хром при следующем соотношении компонентов, мас.%:при этом сплав содержит цирконий в своей структуре в виде наночастиц фазы AlZr размером не более 20 нм, а марганец преимущественно образует вторичные выделения фазы AlCuMnразмером не более 500 нм в количестве не менее 2 об.%.2. Способ получения деформированного полуфабриката из сплава на основе алюминия по п.1, включающий приготовление расплава упомянутого сплава и получение литой заготовки путем кристаллизации расплава, которые проводят при температуре, превышающей температуру ликвидуса не менее чем на 50°С, получение промежуточного деформированного полуфабриката путем деформирования литой заготовки при температуре, не превышающей 350°С, которое проводят в два этапа с промежуточным отжигом при 340-350°С, последующий отжиг промежуточного деформированного полуфабриката при температуре 340-450°С, получение готового деформированного полуфабриката путем деформирования ...

СПОСОБ ПОЛУЧЕНИЯ ЖАРОПРОЧНОГО СПЛАВА НА ОСНОВЕ НИОБИЯ

МЕДНЫЙ ЛИТЕЙНЫЙ СПЛАВ ДЛЯ АСИНХРОННЫХ МАШИН

СПОСОБ ПРОИЗВОДСТВА СТАЛЬНОГО ЛИСТА С ЧЕРНЫМ ПОКРЫТИЕМ И СПОСОБ ПРОИЗВОДСТВА ФОРМОВАННОГО ИЗДЕЛИЯ ИЗ СТАЛЬНОГО ЛИСТА С ЧЕРНЫМ ПОКРЫТИЕМ

... 1. Способ производства стального листа с черным покрытием, включающий в себя:обеспечение стального листа с содержащим алюминий и магний цинковым покрытием, полученным способом погружения в расплав, который включает в себя полученный способом погружения в расплав слой содержащего алюминий и магний цинкового покрытия, содержащий 0,1 масc.% или более и 22,0 масc.% или менее алюминия, 0,1 масc.% или более и менее 1,5 масc.% магния; иконтактирование стального листа с содержащим алюминий и магний цинковым покрытием, полученным способом погружения в расплав, с водяным паром в замкнутом сосуде, причем:концентрация кислорода в замкнутом сосуде составляет 13% или менее.2. Способ по п. 1, дополнительно включающий в себя формирование пленки неорганического покрытия на поверхности стального листа с содержащим алюминий и магний цинковым покрытием, полученным способом погружения в расплав.3. Способ по п. 2, в котором пленка неорганического покрытия включает в себя одно или более соединений, выбранных ...

Лигатура для алюминия и его сплавов

Druckwellenlader mit Zellrotor sowie Verfahren zum Herstellen des Zellrotors

Die vorliegende Erfindung betrifft einen Druckwellenlader mit einem Zellrotor (1) sowie ein Verfahren zur Herstellung des Zellrotors (1), wobei in verschiedenen, in Radialrichtung (R) angeordneten, übereinander liegenden Kammerreihen jeweils ein mäanderförmiges Trennblech (3) zur Separierung der Zellen (15) eingesetzt ist.

METHOD FOR ADDING INSULUBLE MATERIAL TO A LIQUID OR PARTIALLY LIQUID METAL

Verfahren zur Herstellung von technisch eisenfreiem Silicium oder Aluminium-Silicium-Legierungen

Verfahren zur Herstellung einer hochzirkoniumhaltigen Magnesiumvorlegierung

Hochfeste, homogene Kupfer-Nickel-Zinn-Legierung und Herstellungsverfahren

Ein Verfahren zum Herstellen einer hochfesten, homogenen Kupfer-Nickel-Zinn-Legierung mit hoher Festigkeit umfasst das Herstellen einer geschmolzenen Mischung aus Kupfer, Nickel und Zinn; das druckunterstützte Gießen der geschmolzenen Mischung, um einen Guss zu bilden; und das thermische Behandeln des Gusses. Es können für die Legierung neuartige Eigenschaftskombinationen erreicht werden.

Verfahren zur Granulierung und gleichzeitigen Dotierung von schmelzbarem Halbleitermaterial

Verfahren zur Herstellung einer Dauermagnet-Legierung

Verfahren zum Herstellen eines Stahlflachprodukts und Stahlflachprodukt

Verfahren zum Herstellen eines Stahlflachprodukts, das aus einer aus einem Stahlwerkstoff bestehenden Grundschicht und einem darauf aufgetragenen, vor Korrosion schützenden mehrschichtigen Überzug gebildet ist, umfassend folgende Arbeitsschritte: Zurverfügungstellen der Grundschicht, Aufbringen einer Zinkschicht auf die Grundschicht durch elektrolytisches Beschichten, Aufbringen einer höchstens 25 nm dicken Aluminiumschicht auf die Oberfläche der Zinkschicht, wobei die Oberfläche der Zinkschicht hinsichtlich der auf ihr vorhandenen Oxide und Sulfide im verfahrensbedingt am Ende des elektrolytischen Zinkbeschichtens vorliegenden oder auf dem Weg zum Aluminiumbeschichten eintretenden Zustand belassen ist, Aufbringen einer Magnesiumschicht auf die Aluminiumschicht und Wärmenachbehandeln des mit dem aus der auf die Grundschicht aufgebrachten Zinkschicht, der Aluminiumschicht und der Magnesiumschicht gebildeten Überzugs versehenen Stahlflachprodukts derart, dass sich in Richtung der Oberfläche ...

KUPFERLEGIERUNGSBLECHWERKSTOFF UND HERSTELLUNGSVERFAHREN FÜR EINEN KUPFERLEGIERUNGSBLECHWERKSTOFF

Ein Kupferlegierungsblechwerkstoff, der 0,5 bis 2,5% Masseanteil Ni, 0,5 bis 2,5% Masseanteil Co, 0,30 bis 1,2% Masseanteil Si und 0,0 bis 0,5% Masseanteil Cr enthält, wobei der Rest Cu und unvermeidbare Verunreinigungen sind. Der Werkstoff erfüllt die Bedingungen 1,0 ≤ I{200}/I0{200} ≤ 5,0 und 5,0 μm ≤ GS ≤ 60,0 μm, und diese haben die Beziehung (Gleichung 1) 5,0 ≤ {(I{200}/I0{200})/GS} × 100 ≤ 21,0, wobei I{200} eine Röntgenstrahlbeugungsintensität einer {200} Kristallebene bezeichnet, I0{200} eine Röntgenstrahlbeugungsintensität einer {200} Kristallebene aus standardisiertem reinem Kupferpulver bezeichnet und GS (μm) eine durchschnittliche Kristallkorngröße bezeichnet. Eine elektrische Leitfähigkeit beträgt 43,5% bis 55,0% IACS und eine 0,2%-Dehngrenze beträgt 720 MPa bis 900 MPa.

VERFAHREN ZUM SYNTHETISIEREN VON INTERMETALLISCHEN VERBINDUNGEN UND VORRICHTUNG ZUM DURCHFUEHREN DIESES VERFAHRENS

VERFAHREN ZUR SCHMELZMETALLURGISCHEN HERSTELLUNG VON LEGIERUNGEN AUS HOCHSCHMELZENDEN METALLEN

Verfahren zur Herstellung von druckgegossene Superlegierungteile auf Nickelbasis

Sintered molded part comprises carbon, chromium, nickel, molybdenum, manganese, silicon, at least one of cobalt, titanium, niobium, vanadium or tungsten, sulfur, and iron including production related impurities

Sintered molded part comprises 0.2-0.7 wt.% of carbon, 13-19 wt.% of chromium, 5-19 wt.% of nickel, 1-3 wt.% of molybdenum, 0-2 wt.% of manganese, 0-5 wt.% of silicon, 0-3 wt.% of at least one of cobalt, titanium, niobium, vanadium or tungsten, 0-0.2 wt.% of sulfur, and remaining amount of iron including production related impurities. An independent claim is also included for producing the sintered molded part over a carbide low structure, comprising (a) providing a powdery mixture of 0.2-0.7 wt.% of carbon, 13-19 wt.% of chromium, 5-19 wt.% of nickel, 1-3 wt.% of molybdenum, 0-2 wt.% of manganese, 0-5 wt.% of silicon, 0-3 wt.% of at least one of cobalt, titanium, niobium, vanadium or tungsten, 0-0.2 wt.% of sulfur, and remaining amount of iron including production related impurities, optionally with the addition of an organic binder and pressing agent in water and/or organic solvents for preparing a homogeneous powder suspension, (b) optionally preparing a powder granule from the powder ...

Draht aus einer Co-Cr-Mo-Legierung, Verfahren zu dessen Herstellung sowie Verwendung als Flachkörper, Rohr, Litze und Kabel

Verfahren zum Verbinden einer Edelmetalloberfläche mit einem Polymer

Verfahren zum Verbinden einer Edelmetalloberfläche eines Halbleitermaterials oder eines Schaltungsträgers mit einem Polymer mit den Schritten:Abscheiden einer Schicht (3) aus 20% bis 40% Gold und 80% bis 60% Silber auf einen Träger,selektives Entfernen des Silbers zur Erzielung einer nanoporösen schwammartigen Goldschicht (4),Auftragen eines flüssigen Polymers, wobei das flüssige Polymer in die nanoporöse schwammartige Goldschicht (4) eindringt und eine dreidimensionale Grenzfläche mit mechanischer Verzahnung zwischen der nanoporösen schwammartigen Goldschicht (4) und dem flüssigen Polymer gebildet wird,Aushärten des flüssigen Polymers zur Erzeugung einer Polymerschicht (5).

VERFAHREN ZUM SCHMELZMETALLURGISCHEN VERARBEITEN VERUNREINIGTER KUPFER-NICKEL-SCHROTTE

Method of alnico alloy melting

Improvements in or relating to the production of magnesium base alloys

A composition for introducing zirconium into magnesium and magnesium base alloys consists of one or more chlorides of alkaline earth metals, including magnesium, together with zirconium fluoride in the absence of potassium and/or sodium fluoride, at least sufficient chloride being used to enable the composition to melt at the alloying temperature. Up to 20 per cent of innocuous substances may be included in the composition. These substances are compounds of zirconium or of "permissible elements" or such compounds of "zirconium alloying inhibitor elements" as do not give rise to these elements in molten magnesium. "Zirconium alloying inhibitor elements" are defined as elements which form high melting point compounds with zirconium. "Permissible elements" do not form such compounds and they consist mainly of zinc, cadmium, rare earth metals, silver, thallium, thorium, copper, bismuth, beryllium, lead lithium and calcium. The chlorides alone should be fluid at a temperature of 850 DEG C. or ...

Processes and products for the production of low carbon chromium alloys

... 546,681. Alloys. UDY, M. J. April 23, 1941, No. 5220. Convention date, May 28, 1940. [Class 82 (i)] A process for making low-carbon chromium alloys comprises subjecting chromite to oxidation in the presence of lime so as to oxidize part of the chromium, which may be not more than about 50 per cent., to calcium chromate, and treating the product with a non-carbonaceous reducing agent which may be a silicon-containing material, e.g. ferrochrome silicon. An oxidizing material such as sodium nitrate, chlorate, chromate, or bichromate, or calcium chromate, may be added to the mixture. The mixture may be reacted in contact with molten metal such as iron or steel to add the chromium to the metal. The mixture may be used in powdered or briquetted form or may be bonded by the oxidizing material or by other material. Specifications 545,418 and 546,682 are referred to.

Improvements relating to the production of magnesium alloys

In a method of alloying magnesium with one or more metals difficult to alloy therewith, specifically manganese, beryllium, vanadium, molybdenum, nickel, and cerium, molten magnesium is brought into contact, in a bath of molten diluent, with a reducible compound of the other metal or metals, by agitation, or preferably by electrolyzing a magnesium compound in contact with a reducible compound of the other metal or metals. For example, a magnesium-manganese alloy or a magnesium-manganese-cerium alloy may be formed by the electrolysis of a bath of magnesium chloride to which manganese chloride or a mixture of manganese chloride and a cerium compound is added.

Improvements in or relating to uranium fuel elements

... 1,146,704. Nuclear fuel. COMPAGNIE POUR L'ETUDE ET LA REALISATION DE COMBUSTIBLES ATOMIQUES. 1 April, 1966 [3 April, 1965], No. 14620/66. Heading G6C. [Also in Division C7] Uranium nuclear fuel elements are cast from a uranium base alloy containing one or more grain fining elements (e.g. Mo, Cr, Fe, Si or Ge, preferably in an amount of 0À1-4%) and 5-2000 p.p.m. in total of B and/or Be. The castings are preferably tubular and are cooled at a mean rate of 15‹ C. per minute between 850‹ and 650‹ C.

Improvements in and relating to the production of beryllium alloys

Beryllium alloys are made by reducing a beryllium ore containing beryllium oxide and other oxides, e.g. silica, alumina, or both silica and alumina, with carbon in contact with a bath of a metal or mixture of metals in vacuo, in an atmosphere mainly consisting of hydrogen, or in air at any convenient pressure. The temperature or the temperature and duration of the reduction is controlled in accordance with the relation between the composition of the ore and that of the alloy to be produced. The ore may be reduced in stages, e.g. an ore containing beryllium oxide and silica may first be reduced with carbon in contact with a bath of metal such as iron at a temperature between 1400 and 1600 DEG C., a part or the whole of the silica being reduced into the metal bath. The unreduced part of the ore is then reduced in contact with a fresh bath of metal, e.g. iron, at a higher temperature, e.g. 1800-2000 DEG C., to reduce the beryllium oxide and any unreduced silica. Ores containing beryllium oxide ...

Magnesium-Zirconium Alloys.

... 1,197,652. Production of magnesium alloys. MESSIER. June 25, 1968 [July 5, 1967; March 12, 1968], No.30239/68. Heading C7D. Zirconium is introduced into molten magnesium, which may contain other elements, in the form of a Zr-Mg master alloy in the presence of a flux containing at least 60% of one or more potassium salts e.g. the chloride and/or fluoride. The flux may contain potassium salts in amount representing 7-12% of the weight of molten metal and a purifying flux 2-4% on the same basis. Manganese may also be introduced into the bath in the form of manganese chloride. The alloys produced may also include one or more of Ag, Bi, Cd, Ta, Ca, Ga, Su, Mn, Li, Cu, Th, Zn, Pb.

Process for refining the grain of magnesium base alloys

A method of treating magnesium base alloys containing at least 2 per cent aluminium and at least 85 per cent of magnesium wherein a carbonaceous material in sufficient quantity (according to the material and its method of use) is mixed throughout the body of the alloy in a molten condition for a sufficiently long period to produce a grain size and micro structure in the solidified metal similar to those obtained by superheating the alloy. The alloy is preferably treated at a temperature not exceeding 800 DEG C. and materials used may be such as to hibenate carbon in active form at the temperature of treatment. The said materials may comprise a carbonaceous gas, such as a hydrocarbon gas, or a carbonate capable of reacting with molten magnesium to give reactive carbon. A finely divided solid such as coal, coke or peat or graphite may be used. Finely divided carbon is preferably used in amount from 0.005-0.5 per cent by weight of the alloy treated. After treatment the melt is agitated and ...

Aluminothermic or like process for the production of alloys

... 569,235. Aluminothermic and like processes ; alloys. LUX, E. Nov. 6, 1943, No. 18454. [Class 82 (i)] In an aluminothermic or like process for the production of alloys, the alloying metal or metals is or are added to the reacting mixture during the reaction, the addition being made gradually at moments when the equilibrium of the reaction is disturbed by local accumulation of heat or a temperature reached at which any of the components of the mixture begins to boil. Such moments are recognised by the colour of the emitted fumes with or without the assistance of spectroscopical apparatus. Compounds of the metals to be added may form part of the aluminothermic reaction mixture. Reference is made to the manufacture of alloys consisting of (1) 70 per cent copper, 30 per cent manganese; (2) 60 per cent copper, 30 per cent manganese, 10 per cent silicon. In the latter case, the silicon is added with copper filings gradually during the progress of the reaction.

THE PRODUCTION OF INTERMETALLIC COMPOUNDS

A control device.

A control device which provides user control signals has a magnetic flux sensing unit (80, fig 3C) providing two-dimensional angular orientation information with respect to a magnetic field acting on the magnetic flux sensing unit (80, fig 3C). The sensor (80, fig 3C) is placed between a magnet arrangement comprising at least two permanent magnets 60, 62 and can be reoriented relative to one another. The at least two permanent magnets 60, 62 are arranged relative to the magnetic flux sensing unit (80, fig 3C) such that the magnetic field experienced by the magnetic flux sensing unit (80, fig 3C) is substantially uniform, 64, throughout the predetermined range of movement. The magnet arrangement may take the form of a pair of ring magnets or a Halbach array (fig 3B).

Improved Manufacture of Alloys Containing Nickel and Zinc.

... 113,272. Stabilimenti Biak-Ing. A. Pouchain, (Assignees of Peynetti, P.). Oct. 28, 1916, [Convention date]. Alloys.-In the production of alloys containing nickel and zinc in which the nickel and zinc are alloyed with the other constituents in the form of a nickel-zinc alloy, the nickel-zinc alloy is made by melting the nickel in the vapour of the zinc. The zinc is vapourized in a closed vessel, after which the temperature is raised and the nickel added, which melts in the zinc vapour.

"Method of adding manganese to a molten magnesium bath"

A method for the addition of manganese to a molten magnesium bath by mixing the manganese to be dissolved in a finely divided form with magnesium in a finely divided form and adding the mixture to the molten magnesium.

Improvements in and relating to ferromanganese alloys

... Ferromanganese of composition 80-90% Mn, 0.1-1% Si, 0.04-1.5% C and balance Fe is produced by a cyclic process comprising preparing a melt of iron-containing manganese ore containing 36-52% Mn, lime and sufficient carbonaceous material, e.g. coal or coke, to effect partial reduction of the manganeous values to the divalent state, e.g. in a submerged arc smelting furnace, reacting this melt with sufficient silicon-reducing agent containing 4-14% Si, e.g. in a first ladle, to further reduce the manganese values to the metallic state to produce the ferromanganese and a slag containing 30-38% Mn, reacting this slag, e.g. decanted into a second ladle, with a silicomanganese reducing agent containing 16-36% Si to produce an intermediate Fe-Mn alloy as the silicon-reducing agent and a slag containing 18-24% Mn. The latter slag may be reacted with manganese ore, quartz and carbon in a furnace melt to produce the silicomanganese reducing agent. Additional Fe-Mn and/or Si-Mn ...

Process for producing alloys containing alkaline earth metals

... 164,608. Kroll, G. J. May 19, 1920. Alloys containing one or more alkaline earth metals are made bv the reaction of an alloy containing an alkali metal or metals and one or more halogen salts of the alkaline earth metal or metals, mixed or not with other salts, the materials being maintained in a highly fluid state during the reaction. The salts used may include double or multiple salts, mixtures of different alkaline earth salts, salts of other metals which are capable of replacing the alkali metal in the alkali metal alloy such as aluminium, cadmium, copper, zinc, lead and bismuth, or salts of metals inert to the alkali metal in the alloy, such as sodium. If the metal which is to be alloyed with the alkaline earth metal does not alloy with an alkali metal, mechanical mixtures of the metals and alkali metal may be used. The salts may be present in large excess of the theoretical amount, for example 2-5 times, and may be heated considerably above their melting point. In some cases the alkali ...

Silicon- and calcium-based alloys

Alloys of calcium and silicon with one or more of zirconium, aluminium, barium, lithium, beryllium, magnesium, and containing less than 7% of iron, are produced by adding a compound of the metal preferably oxide, silicate or carbonate, either before or during the manufacture of the calcium-silicon alloy in an electric furnace, while similar calcium-silicon alloys but containing one or more of potassium, sodium, titanium or cerium are obtained by adding compounds of those metals to a bath of molten calcium-silicon alloy. That part of the final alloy other than the added metal or metals preferably contains 20-35% calcium, 55-65% silicon, 2-7% iron and less than 1% carbon, and the proportion of added metal may be 0.1-30% of the total of those constituents. Alloys particularly referred to are those containing 5-30% magnesium, 0.5-15% sodium or 0.1-3% cerium for nodularizing cast irons, 2-15% titanium for inoculating cast irons, and 2-20% aluminium for refining low carbon ferrous metals. In ...

Improvements in and relating to the treatment of platinum group metals and alloys

... 1,139,897. Making dispersion hardened alloys. JOHNSON, MATTHEY & CO. Ltd. Jan. 14, 1966 [Jan. 15, 1965], No. 1882/65. Heading C7D. Dispersion hardened alloys are made by alloying Pd with a minor amount (e. g. 0À2%) of Cr or Rh or Pt, optionally containing at least one other platinum group metal with a minor amount (e. g. up to 1%) of Be, Mg, Al, Si, Th, U, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Sr, Y, Zr, Nb, Mo, Ba, Hf, Ta or a rare earth metal, and heating the alloy in the presence of a gas which forms a stable refractory compound with the additional metal. The gas may be air or oxygen (when the alloy is heated to 900-1400‹ C.) to form dispersed oxide, nitrogen to form a nitride or a carburizing gas such as ethane or ethylene to form a carbide. The refractory compound may also be silicide, boride or sulphide when a suitable gas is used. In the case of Pt containing alloys the gas treatment may preferably be carried out on the powdered alloy, and the massive alloy is reconstituted by powder ...

Improved process and apparatus for the production of colloid mixtures comprising metals and non-alloyable additive materials

... 432,278. Bearing materials. BOROFSKI, H., 85, B³ltenweg, Brunswick, Germany. Jan. 24, 1934, No. 2501. Convention date, Feb. 25, 1933. [Class 12 (i)] [See also Group V] A colloidal mixture of a metal with a non-alloyable additive substance, e.g. graphite, is made by wetting the additive substance before its addition to the molten metal with a liquid e.g. water, glycerine, or o i 1, which completely evaporates in the metal its place being taken by the latter. In a modification, a mixture of the metal, additive substance, and wetting liquid is heated until the liquid is melted and the liquid completely evaporated. The invention is suitable for the production of bearing metals or alloys having bases of copper, lead, zinc, tin or aluminium. In the manufacture of bronzes and like alloys a component of the alloy e.g. zinc or tin, may be added to the additive substance in the form of a fine powder before or after the wetting but prior to the addition of the wetted substance to the molten metal.

A lead antimony alloy for pressed tubes, more particularly for cable sheaths

A lead alloy particularly for the sheaths of electric cables is produced by forming an alloy of pure lead and antimony and adding thereto a third component which is either a chemical compound of antimony and one or more of the metals cadmium, copper, nickel, manganese, and magnesium, or a solid solution of antimony and tin. A suitable alloy for cable sheathing consists of 98 per cent or more of pure lead and up to 1 per cent of antimony, the third component making up the remainder. In making the alloy a mother alloy of lead and the third component and a second mother alloy of lead, antimony, and the third component are first made. The first mother alloy is diluted in pure lead and the second mother alloy added thereto in such quantities as to make up the desired final composition.

Improvements in or relating to the production of magnesium base alloys

A composition for introducing zirconium into magnesium and magnesium base alloys consists of one or more chlorides of calcium, barium, strontium, magnesium and alkali metals together with mixtures or compound salts of zirconium fluoride with potassium and/or sodium fluoride and/or products producable by reaction between such chlorides and fluorides, with or without up to 20 per cent of innocuous substances, i.e. compounds of zirconium or of "permissible elements" or such compounds of "zirconium alloying inhibitor elements" as do not give rise to these elements in molten magnesium. "Zirconium alloying inhibitor elements" are defined in the Specification as elements which form high melting point compounds with zirconium. "Permissible elements" do not form such compounds. These elements consist mainly of zinc cadmium, rare earth metals, silver, thallium, thorium, copper, bismuth, beryllium, lead, lithium and calcium. The composition may include at least 20 per cent of zirconium fluoride and ...

PROCESS FOR THE PRODUCTION OF ALLOY SPONGE OF TITANIUM OR ZIRCONIUM

... 1359217 Producing zirconium or titanium alloys KOBE SEIKOSKO K K [trading as KOBE STEEL Ltd] 15 June 1971 27892/71 Headings C7A and C7D An alloy sponge of titanium or zirconium is produced by mixing titanium tetrachloride or zirconium tetrachloride with a halide of an additive element, partially reducing the mixture with alkali metal at 600 to 800‹C, completing the reduction at 900 to 960‹C and washing the product with dilute mineral acid to produce the sponge. The alkali metal is preferably Na or K; examples of halides are AlCl 3 , SiCl 4 , VCl 4 , MoCl 5 , CrCl 3 , SnCl 4 , TaCl 5 , K 2 TaF 4 , FeCl 3 , MnCl 2 , HfCl 4 , ZrCl 4 , WCl 5 , NbCl 5 , CoCl 2 , NiCl 2 , CuCl, PCl 5 , SCl 2 , ZnCl 2 , BeCl 2 , YCl 2 , PdCl 2 or PtCl 2 . When producing titanium, the additive may be a fine powder, a suspension in TiCl 4 , or a liquid pre-mixed with TiCl 4 . When producing zirconium the ZrCl 4 is gaseous and mixed with liquid or solid additive. Alloy compositions. Examples of alloy sponges produced ...

Manufacture of silicon carbide fibres

Submicroscopic b -SiC fibres are made by mixing SiO2 and C in a molar ratio of 1:1 to 10 in a reaction chamber, reacting the mixture at 1375 DEG to 1575 DEG C. in the presence of a COcontaining atmosphere, the CO having a partial pressure of 5 to 500 mm. Hg, forming the fibres from the reaction product at 1050 DEG to 1380 DEG C. and cooling the fibres to room temp. The atmosphere may also contain at least one of H2, He, N, and Ar and have a sum of partial pressures of 760 mm. Hg. The time to form the fibres may be 2 to 24 hrs. The reaction chamber may be evacuated to an abs. pressure of not more than 5 mm. Hg and heated to 600 DEG C. after providing the SiO2 and C mixture so as to allow complete degassing. The fibres may be cooled by cooling the chamber to 600 DEG C., introducing air and cooling further to room temp. The fibres have an average diameter of 250 <\>rA, a length up to 100m , a length to diameter ratio of 40,000:1 and have a surface sheath of SiO2.

A method of producing an Alloy from High Melting Temperature Activated Metals

... 1,191,193. Consumable electrodes. KOBE STEEL Ltd. 20 May, 1968, No. 23816/68. Heading B3R. [Also in Division C7]. An alloy of high melting reactive metals is produced by mixing powders of the metals, of particle size smaller than 50 mesh (Tyler standard), enclosing the resulting mixture in an electrode body to form a consumable electrode and melting the electrode by vacuum arc or electron beam. The electrode, formed of base metal and alloying metal, may be formed by mixing powdered base metal and all of the alloying metal, preferably in a 50: 50 ratio by weight, and enclosing the powder in a body formed of the remaining base metal which may be in massive form or in the form of grains or powder. The mixed powders may be charged loosely into the core portion of the electrode or may be premoulded under pressure. In either case the composite body is moulded by pressing. Alternatively the mixed powder may be charged to a central through bore of the electrode body and the body is pressed axially ...

Improvements in or relating to processes for the production and remelting of compounds or alloys

A process for the melting and subsequent crystallization of a compound or alloy derived from both volatile and non-volatile constituents without change in composition comprises heating the compound or mixture to its melting point in a sealed vessel in an atmosphere of the volatile constituent or constituents, the proportion of volatile constituent or constituents added to form said atmosphere and the temperature conditions, being such that, at equilibrium, substantially none of the added volatile constituent or constituents exist in a non-gaseous state, either as a contaminant of the molten compound or alloy or in a separate part of the vessel. In a modification the compound or alloy may be prepared in situ by heating the non-volatile constituent or constituents to the melting point of the compound or alloy in the presence of an excess of the volatile constituent or constituents to produce the conditions specified above. In a further modification a melt is produced of which the proportion ...

A method of preparing a magnesium thorium alloy

Alloys of magnesium with a high content of thorium are produced by adding magnesium to a molten solution of thorium halide in an alkaline earth metal halide. A mixture of thorium halides may be used, and/or a mixture of alkaline earth metal halides, and the reaction is usually carried out in an inert atmosphere. The alloys may be used for structural purposes or as master alloys. Production of alloys containing 18%, 24% and 57.1% of thorium is described.

Improvements in or relating to processes and apparatus for the production of aluminium and of mixtures of aluminium and aluminium carbide

... In a continuous process as in Specification 865,861 for the production of a mixture of aluminium and aluminium carbide by the reduction of alumina with carbon at a temperature of 2300 DEG -2600 DEG C. in an electric arc furnace, the molten mixture is intermittently tapped from the furnace. Thus in the furnace shown in Fig. 1, the molten aluminium-aluminium carbide mixture is periodically tapped from the furnace hearth 1 by piercing the crucible wall with an auxiliary electrode 9 and is allowed to run into a subcrucible 2 arranged within the heat insulating material surrounding the furnace. The mixture is allowed to cool slowly and solidify in the subcrucible and is removed through a door 10. The weight ratio of carbon to alumina in the charge supplied to the furnace is 0,43\sB10%. The carbon of the charge may be in the form of charcoal, crude or baked petroleum coke, purified powdered coal or coke, sawdust or carbohydrate. The alumina may be prepared by a carbothermal ...

Improvements in or relating to methods of producing materials for use in the manufacture of semiconductor devices

In a method of producing a material for use in semi-conductive devices, such as transistors and crystal diodes, boron is dissolved in germanium and/or silicon and the resulting alloy is dissolved in aluminium. Methods of making two aluminium-boron-silicon alloys are described, having boron contents of about 2.5 atom per cent and 0.5 atom per cent respectively. An alloy containing 95% by weight of Al, 4.8% Si and 0.2% B may be rolled to form a thin sheet from which small discs are stamped and alloyed to silicon bodies in the manufacture of semi-conductive devices.

Improvements in or relating to methods of alloying substances onto semi-conductor material

Components to be alloyed on to a semi-conductor material are first formed into an alloy of eutectic composition having a melting point lower than alloying temperature of the semi-conductor material but not less than 75% of this temperature and then alloyed on to the semi-conductor material at the alloying temperature. The melting point of the eutectic alloy should be at least 500 DEG C. when the base material is silocon (alloying temperature 650-700 DEG C.) and at least 300 DEG C. when the base material is germanium. The semi-conductor material may form one component of the eutectic alloy and donors (Sb, As or P) or acceptors (Ga, Al or B) may be included. The following eutectic alloys are referred to: Al-Si; Au-Ge; Au-Sn; Au-Pb; Ag-Cd; Sb-Te.

Improvements in or relating to irradiation of metal alloys

In the production of metal alloys the starting materials which comprise metals or metallic compounds, such as oxides, are prior to the alloying treatment subjected to irradiation with 100 to 400 million R per gram, preferably in aqueous suspension.ALSO:In the production of metal alloys the starting materials which comprise metals or metallic compounds, such as oxides, are prior to the alloying treatment subjected to irradiation with 100 to 400 million R per gram, preferably while in aqueous suspension. Alloys exemplified are copper/aluminium; alloys of copper silicon, calcium, magnesium and aluminium which are produced from Sudbury Basin ore by reduction with hydrogen; an alloy of zirconium and lead (Zr5Pb3); combinations of zirconium with zinc, tin, copper, manganese, cobalt, mercury, and antimony; lanthanum and caesium with iron, or lanthanum with caesium and tungsten and iron, or iron with vanadium, tungsten, titanium, molybdenum and tantalum or sintered aluminum powder with titanium ...

Carbide material for cutting devices and associated method of manufacture

Improvements in and relating to the production of substantially pure thorium and uranium and binary and ternary alloys of thorium, uranium and zirconium

In the production of thorium or uranium by reacting a carbide of the metal with iodine and decomposing the iodide, the raw material, e.g. oxide, is converted into the carbide by reaction with carbon at high temperature. Thorium oxide may be mixed with pure carbon, such as graphite or sugar charcoal, and the mixture, with an organic binder, pressed to compact masses and heated for at least 30 minutes in a carbon tube resistor furnace to a temperature above 2100 DEG C. in an oxygen-free atmosphere. The carbide compacts are cooled in the inert atmosphere, crushed in an atmosphere of dry argon or nitrogen and transferred to a bulb which is evacuated, e.g. to 10-5 m.m. of mercury. The bulb contains also iodine, previously dried by multiple distillation in p vacuo, in amount of 2 parts by weight of iodine to 20 parts by weight of carbide. The bulb is heated to above 400 DEG C, e.g. 485 DEG C. to evaporate the iodine for reaction with the carbide to form a volatile thorium iodide which is decomposed ...

Resonator

A method of manufacturing a MEMS resonator formed from a first material having a first Young's modulus and a first temperature coefficient of the first Young's modulus, and a second material having a second Young's modulus and a second temperature coefficient of the second Young's modulus, a sign of the second temperature coefficient being opposite to a sign of the first temperature coefficient at least within operating conditions of the resonator. The method includes the steps of forming the resonator from the first material; applying the second material to the resonator; and controlling the quantity of the second material applied to the resonator by the geometry of the resonator.

Weldable Metal Article

The invention relates to an extruded or rolled clad metal article having a core metal layer and a cladding metal layer on at least one surface of the core layer, wherein the metals of the core metal layer and the cladding metal layer are each aluminium alloys, preferably an aluminium-magnesium alloy, having at least Sc in a range of 0.05% to 1%, and wherein the Sc-content in the core metal layer is lower than in the cladding metal layer. This further relates to a welded structure incorporating such a metal article.

Amorphous alloys having zirconium and methods thereof

An amorphous alloy having the general formula of: (Zr x Al y Cu z Ni 1-x-y-z ) 100-a-b SC a Y b , wherein x, y, and z are atomic percents, and a and b are atom molar ratios, in which: about 0.45≦x≦about 0.60; about 0.08≦y≦about 0.12; about 0.25≦z≦about 0.35; 0<a≦about 5; and 0≦b<about 0.1.

Titanium Target for Sputtering

The object of this invention is to provide a high quality titanium target for sputtering capable of reducing the impurities that cause generation of particles and abnormal discharge, which is free from fractures and cracks during high power sputtering (high rate sputtering), and capable of stabilizing the sputtering properties and effectively suppressing the generation of particles upon deposition. This invention is able to solve foregoing problems using a high purity titanium target for sputtering containing, as additive components, 3 to 10 mass ppm of S and 0.5 to 3 mass ppm of Si, and in which the purity of the target excluding additive components and gas components is 99.995 mass percent or higher.

Composite alloy bonding wire and manufacturing method thereof

A manufacturing method for a composite alloy bonding wire and products thereof. A primary material of Ag is melted in a vacuum melting furnace, and then a secondary metal material of Pd is added into the vacuum melting furnace and is co-melted with the primary material to obtain an Ag—Pd alloy solution. The obtained Ag—Pd alloy solution is drawn to obtain an Ag—Pd alloy wire. The Ag—Pd alloy wire is then drawn to obtain an Ag—Pd alloy bonding wire with a predetermined diameter.

HIGH Cr FERRITIC/MARTENSITIC STEELS HAVING AN IMPROVED CREEP RESISTANCE FOR IN-CORE COMPONENT MATERIALS IN NUCLEAR REACTOR, AND PREPARATION METHOD THEREOF

Disclosed herein is a high Cr Ferritic/Martensitic steel comprising 0.04 to 0.13% by weight of carbon, 0.03 to 0.07% by weight of silicon, 0.40 to 0.50% by weight of manganese, 0.40 to 0.50% by weight of nickel, 8.5 to 9.5% by weight of chromium, 0.45 to 0.55% by weight of molybdenum, 0.10 to 0.25% by weight of vanadium, 0.02 to 0.10% by weight of tantalum, 0.21 to 0.25% by weight of niobium, 1.5 to 3.0% by weight of tungsten, 0.015 to 0.025% by weight of nitrogen, 0.01 to 0.02% by weight of boron and iron balance. By regulating the contents of alloying elements such as nitrogen, born, the high Cr Ferritic/Martensitic steel with to superior tensile strength and creep resistance is provided, and can be effectively used as an in-core component material for sodium-cooled fast reactor (SFR).

Method of producing particulate-reinforced composites and composites produced thereby

A process for producing particle-reinforced composite materials through utilization of an in situ reaction to produce a uniform dispersion of a fine particulate reinforcement phase. The process includes forming a melt of a first material, and then introducing particles of a second material into the melt and subjecting the melt to high-intensity acoustic vibration. A chemical reaction initiates between the first and second materials to produce reaction products in the melt. The reaction products comprise a solid particulate phase, and the high-intensity acoustic vibration fragments and/or separates the reaction products into solid particles that are dispersed in the melt and are smaller than the particles of the second material. Also encompassed are particle-reinforced composite materials produced by such a process.

Low lead ingot

A composition for a low lead ingot comprising primarily copper and including tin, zinc, sulfur, phosphorus, nickel. The composition may contain manganese. The low lead ingot, when solidified, includes sulfur or sulfur containing compounds such as sulfides distributed through the ingot. The presence and a substantially uniform distribution of these sulfur compounds imparts improved machinability and better mechanical properties.

Method for producing alloy ingot

Disclosed is a method for producing alloy ingot including: a step of: charging alloy starting material into a cold crucible in a cold-crucible induction melter, and forming melt pool of the alloy starting material by induction heating in inert gas atmosphere; a step of continuing the induction heating and adding first refining agent to the melt pool, and then reducing the content of at least phosphorus from among impurity elements present in the melt pool; and a step of forming alloy ingot by solidifying the melt, the phosphorus content of which has been reduced. The first refining agent is mixture of metallic Ca and flux, where the flux contains CaF 2 and at least one of CaO and CaCl 2 . The weight proportion of the sum of CaO and CaCl 2 with respect to CaF 2 ranges from 5 to 30 wt % and the weight proportion of metallic Ca with respect to the melt pool is 0.4 wt % or greater.

Ni-BASED SUPERALLOY, AND TURBINE ROTOR AND STATOR BLADES FOR GAS TURBINE USING THE SAME

An object of the present invention is to provide a Ni-based superalloy, especially for a conventional casting, having a good balance among high temperature strength, corrosion resistance and oxidation resistance, as compared to a conventional material. The Ni-based superalloy comprises Cr, Co, Al, Ti, Ta, W, Mo, Nb, C, B, and inevitable impurities, the balance being Ni, the Ni-based superalloy having a superalloy composition comprising, by mass, 13.1 to 16.0% Cr, 11.1 to 20.0% Co, 2.30 to 3.30% Al, 4.55 to 6.00% Ti, 2.50 to 3.50% Ta, 4.00 to 5.50% W, 0.10 to 1.20% Mo, 0.10 to 0.90% Nb, 0.05 to 0.20% C, and 0.005 to 0.02% B.

Method of determining bond coverage in a joint

A method of determining bonding agent coverage in a joint between a first substrate ( 10 ) and a second substrate ( 12 ), including: dispersing a marker material ( 18 ) throughout a bonding agent ( 16 ); melting the bonding agent ( 16 ) but not the marker material; solidifying the melted bonding agent ( 16 ) to form an actual bond ( 24 ) in a joint between the first substrate ( 10 ) and the second substrate ( 12 ); detecting the marker material ( 18 ) in the joint through at least one of the substrates to ascertain an actual bond ( 24 ); and comparing the actual bond ( 24 ) to an expected bond ( 28 ) for the joint to determine the bonding agent coverage.

Nickel-based superalloy and parts made from said superalloy

A nickel superalloy has the following composition, the concentrations of the different elements being expressed as wt-%: Formula (I), the remainder consisting of nickel and impurities resulting from the production of the superalloy. In addition, the composition satisfies the following equation, wherein the concentrations of the different elements are expressed as atomic percent: Formula (II).

Aluminum-alloy sheet and method for producing the same

An aluminum-alloy sheet includes 0.10 to 0.40 mass % of Si, 0.35 to 0.80 mass % of Fe, 0.10 to 0.35 mass % of Cu, 0.20 to 0.80 mass % of Mn, and 1.5 to 2.5 mass % of Mg, the balance being Al and unavoidable impurities, wherein a content ratio (Si/Fe) of the Si to the Fe is 0.75 or less, the area fraction of Mg 2 Si intermetallic compound grains having a maximum length of 1 μm or more is 0.10% or more in a region of a section of the aluminum-alloy sheet, the region being a central region in the thickness direction of the aluminum-alloy sheet, and the aluminum-alloy sheet has a proof stress of 225 to 270 N/mm 2 after having been baked at 270° C. for 20 seconds.

Amorphous nickel-free zirconium alloy

An amorphous Nickel-Free Zirconium alloy which is readily formed through copper mold casting, comprising a composition consisting of four elements in which the first element is Zr, the second element is Ti, the third element is Cu and the fourth element is Al, wherein an atomic percent of the first to the fourth elements in the composition are represented by a, b, c and d respectively, wherein a=45˜69%, b=0.25˜8%, c=21˜35%, and d=7.5˜15%, where a sum of a, b, c and d is smaller than or equal to 100%. The composition of the amorphous alloy within the above range is melted in a copper mold to form bulk amorphous materials or parts which have characteristics of high tensile strength, high fracture toughness, low Young's modulus and high corrosion resistance.

Lead-Free Solder Compositions

A solder may include zinc, aluminum, magnesium and gallium. The zinc may be present in an amount from about 82% to 96% by weight of the solder. The aluminum may be present in an amount from about 3% to about 15% by weight of the solder. The magnesium may be present in an amount from about 0.5% to about 1.5% by weight of the solder. The gallium may be present in an amount between about 0.5% to about 1.5% by weight of the solder.

Fe-GROUP-BASED SOFT MAGNETIC POWDER

The present invention provides a Fe-group-based soft magnetic powder that is used for the pressed powder magnetic cores for a choke coil, reactor coil, etc., and that has a higher magnetic permeability. At least one selected from Fe, Co, or Ni that is generally used is used as the main component of the Fe-group-based alloy (iron-based alloy) soft magnetic powder. The soft magnetic powder is produced by adding a small amount of Nb (0.05-4 wt %) or V, Ta, Ti, Mo, or W, to the molten metal and by means of an inexpensive method such as the water-atomizing method.

COPPER-BASED ALLOYS, PROCESSES FOR PRODUCING THE SAME, AND PRODUCTS FORMED THEREFROM

Copper-manganese alloys, optionally with potentially other alloying elements, whose compositions are at or sufficiently near the congruent (minimum) melting point of the Cu—Mn system to substantially avoid dendritic growth during solidification. Processes for producing such alloys are also provided, as well as products produced from such alloys. 1. A copper-manganese alloy containing copper and manganese in amounts at or sufficiently near the congruent melting point of the Cu—Mn alloy system to sufficiently avoid dendritic growth during solidification of the copper-manganese alloy to avoid the formation of microporosity attributable to dendritic growth.2. The copper-manganese alloy according to claim 1 , wherein the copper-manganese alloy contains at least 25 weight percent and not more than 40 weight percent manganese.3. The copper-manganese alloy according to claim 1 , wherein the copper-manganese alloy contains at least 32 weight percent and not more than 36 weight percent manganese.4. The copper-manganese alloy according to claim 1 , wherein the copper-manganese alloy further contains one or more of iron claim 1 , nickel claim 1 , aluminum claim 1 , silicon claim 1 , tin and lead.5. The copper-manganese alloy according to claim 1 , wherein the copper-manganese alloy does not contain lead.6. A process of producing a copper-manganese alloy containing copper and manganese in amounts at or sufficiently near the congruent melting point of the Cu—Mn alloy system to sufficiently avoid dendritic growth during solidification of the copper-manganese alloy to avoid the formation of microporosity attributable to dendritic growth claim 1 , the process comprising combining copper and ferromanganese as a source of manganese.7. The process according to claim 6 , wherein the ferromanganese contains about 75 to 80 weight percent manganese with the balance carbon claim 6 , iron and incidental impurities.8. The process according to claim 6 , wherein the combining step comprises ...

METAL COMPOSITES AND METHODS FOR FORMING SAME

A metal composite comprising a spinodal structure having at least one ductile phase and method of making same is disclosed. The metal composite is formed by forming an alloy comprising a positive heat of mixing in the liquid state; purifying the alloy; and forming a network structure of the alloy comprising at least one ductile sub-network. 1. A method comprising:forming an alloy;purifying the alloy; andforming a network structure of the alloy comprising at least one ductile sub-network structure.2. The method of wherein the alloy formed comprises a ratio of Tto Tgreater than or equal to about 0.35.3. The method of claim 2 , wherein the alloy formed comprises a ratio of Tto Tgreater than or equal to about 0.49.4. The method of claim 2 , wherein the alloy formed comprises a metal and a metalloid.5. The method of claim 4 , wherein purifying the alloy comprises:heating the alloy to form a molten alloy; andcontacting the molten alloy with a flux material.6. The method of claim 2 , wherein forming a network structure comprises cooling the molten alloy.7. The method of claim 6 , wherein cooling the molten alloy comprises undercooling the molten alloy.8. The method of claim 7 , wherein the molten alloy is cooled to a ΔT of about 100° K to about 500° K9. The method of claim 4 , wherein the alloy formed comprises a metal selected from the group consisting of Fe claim 4 , Co claim 4 , Cu claim 4 , Ni claim 4 , Pd claim 4 , Pt claim 4 , Mn claim 4 , Al claim 4 , Ti claim 4 , Zr claim 4 , Cr claim 4 , W claim 4 , and combinations thereof.10. The method of claim 9 , wherein the alloy formed comprises a metal selected from the group consisting of Fe claim 9 , Co claim 9 , Ni claim 9 , and combinations thereof.11. The method of claim 10 , wherein the alloy formed comprises Ni.12. The method of claim 10 , wherein the alloy formed comprises Co.13. The method of claim 10 , wherein the alloy formed comprises Fe.14. The method of claim 4 , wherein the alloy formed comprises a metalloid ...

Aluminum alloy excellent in high temperature strength and heat conductivity and method of production of same

An aluminum alloy which is excellent in high temperature strength and heat conductivity by adjusting the composition to one keeping down the drop in high temperature strength and making the Mn content as small as possible to reduce the formation of a solid solution in the aluminum, which aluminum alloy having a composition of ingredients which contains Si: 12 to 16 mass %, N: 0.1 to 2.5 mass %, Cu: 3 to 5 mass %, Mg: 0.3 to 1.2 mass %, Fe: 0.3 to 1.5 mass %, and P: 0.004 to 0.02 mass % and furthermore 0 to 0.1 mass % of Mn and further contains, as necessary, at least one of V: 0.01 to 0.1 mass %, Zr: 0.01 to 0.6 mass %, Cr: 0.01 to 0.2 mass %, and Ti: 0.01 to 0.2 mass %. Also described is a method for producing the aluminum alloy melt.

High-Carbon Iron-Based Amorphous Alloy Using Molten Pig Iron and Method of Manufacturing the Same

Provided is an iron-based amorphous alloy and a method of manufacturing the same. More particularly, provided is an high carbon iron-based amorphous alloy expressed by a general formula FeαCβSiγBxPyCrz, wherein α, β, γ, x, y and z are atomic % of iron (Fe), carbon (C), silicon (Si), boron (B), phosphorus (P), and chrome (Cr) respectively, wherein a is expressed by α= 100 −(β+γ+x+y+z) atomic %, β is expressed by 13.5 atomic %≦β≦17.8 atomic %, γ is expressed by 0.30 atomic %≦γ≦1.50 atomic %, x is expressed by 0.1 atomic %≦x≦4.0 atomic %, y is expressed by 0.8 atomic %≦y≦7.7 atomic %, and z is expressed by 0.1 atomic %≦z≦3.0 atomic %.

Method of producing non-oriented electrical steel sheet

Disclosed is a method for producing a non-oriented magnetic steel sheet, wherein a steel slab that consists of 0.01-0.1 mass % of C, 4 mass % or less of Si, 0.05-3 mass % of Mn, 3 mass % or less of Al, 0.005 mass % or less of S, 0.005 mass % or less of N and the balance made up of Fe and unavoidable impurities is subjected to hot rolling, cold rolling and final annealing. By carrying out the final annealing, while setting the average heating rate during the heating to 100° C./sec or more and setting the soaking temperature within the temperature range of 750-1100° C., a non-oriented magnetic steel sheet that has extremely increased magnetic flux density in the rolling direction of the steel sheet is advantageously produced.

Ferro-Alloys

Methods comprising providing a composition comprising iron and a high melting point element; heating the composition to an elevated temperature up to about 3,500° F.; holding the composition at the elevated temperature for a time sufficient for the heat's temperature to stabilize; and allowing the composition to cool or solidify. Methods comprising providing a master alloy comprising iron and up to about 30% by weight of a high melting point element; and adding the master alloy to a heat of steel. Compositions comprising an alloy of iron and high melting point element in which the alloy is up to about 30% by weight of the high melting point element. Compositions comprising an alloy of iron and high melting point element having a substantially uniform microstructure. 1. A method comprising:providing a composition comprising iron and a high melting point element;heating the composition to an elevated temperature up to about 3,500° F.;holding the composition at the elevated temperature for a time sufficient for the heat's temperature to stabilize; andallowing the composition to cool or solidify.2. The method of claim 1 , wherein the high melting point element is up to about 30% by weight of the composition.3. The method of claim 1 , wherein the high melting point element is one or more of Tungsten (W) claim 1 , Niobium (Ni) claim 1 , Rhenium (Re) claim 1 , Osmium (Os) claim 1 , Tantalum (Ta) claim 1 , Iridium (Ir) claim 1 , Boron (B) claim 1 , Ruthenium (Ru) claim 1 , Hafnium (Hf) claim 1 , Technetium (Tc) claim 1 , Rhodium (Rh) claim 1 , Zirconium (Zr) claim 1 , Platinum (Pt) claim 1 , and Thorium (Th).4. The method of claim 1 , wherein the time sufficient for the heat's temperature to stabilize is between about 1 and 10 hours.5. The method of claim 1 , further comprising adding the master alloy to a heat of steel.6. A method comprising:providing a master alloy comprising iron and up to about 30% by weight of a high melting point element; andadding the master alloy to ...

BRASS ALLOY COMPRISING SILICON AND ARSENIC AND A METHOD OF MANUFACTURING THEREOF

An improved brass alloy providing improved ability for machining is detailed that is free of lead and is at the same time environmental friendly. The alloy comprises added alloying elements in an amount that is identified through an iterative process during manufacturing of the alloy. 1. A brass alloy comprising copper and zinc , characterized in that the brass alloy further comprises 0.5 to 2 wt % amount of silicon , at least one alloying element , wherein the wt % amount of the at least one alloying element is identified through an iterative process when producing the brass alloy , wherein the level of the wt % alloying element is identified as a level leaving no free amount of the alloying element in the brass alloy.2. The brass alloy according to claim 1 , wherein the amount of copper is in the range of 60 to 69 at wt % copper claim 1 , the amount of silicon is in the range of 0.5 to 2.0 wt % silicon claim 1 , the alloying element is arsenic added in the range of 0.005 to 0.015 wt % arsenic claim 1 , the remaining amount of wt % is zinc.3. The brass alloy according to claim 2 , wherein the alloying element is arsenic and phosphorus added respectively in the range of 0.005 to 0.015 wt % arsenic and 0.005 to 0.02 wt % phosphorus.4. A method for producing a brass alloy according to claim 1 , characterized in comprising steps of:a) using a clean oven by replacing used heat resistant stones with unused heat resistant stones,b) providing charge of the oven by adding wt % of material from a list of materials comprising Cu elektro, Zn 1020ZN, Cu/As 70/30 and Si,c) heating the oven,d) providing a sample casting of material while maintaining heating the oven,e) providing an analysis of the sample casting determining if chemistry of the sample casting is in accordance with expected properties,f) if step e) indicates any deviation further alloying elements are added to the hot oven and step e) and step f) is iteratively performed until the chemistry is in accordance with ...

NON-FLAMMABLE MAGNESIUM ALLOY WITH EXCELLENT MECHANICAL PROPERTIES, AND PREPARATION METHOD THEREOF

A magnesium alloy that has excellent ignition resistance and is excellent in both strength and ductility. The magnesium alloy includes, by weight, 1.0% or greater but less than 7.0% of Al, 0.05% to 2.0% of Ca, 0.05% to 2.0% of Y, greater than 0% but not greater than 6.0% of Zn, and the balance of Mg, and the other unavoidable impurities. The total content of the Ca and the Y is equal to or greater than 0.1% but less than 2.5% of the total weight of the magnesium alloy. The Mg alloy forms a dense composite oxide layer that acts as a protective film. Thus the Mg alloy has very excellent oxidation resistance and ignition resistance, can be melted, cast and machined in the air or a common inert atmosphere (Ar or N), and can reduce the spontaneous ignition of chips that are accumulated during the process of machining. 1. A magnesium alloy manufactured by melt casting , the magnesium alloy comprising , by weight , 1.0% or greater but less than 7.0% of Al , 0.05% to 2.0% of Ca , 0.05% to 2.0% of Y , greater than 0% but not greater than 6.0% of Zn , a balance of Mg , and other unavoidable impurities ,wherein a total content of the Ca and the Y is equal to or greater than 0.1% but less than 2.5% of a total weight of the magnesium alloy.2. The magnesium alloy of claim 1 , wherein a content of the Ca ranges claim 1 , by weight claim 1 , from 0.2% to 1.5%.3. The magnesium alloy of claim 1 , wherein a content of the Y ranges claim 1 , by weight claim 1 , from 0.1% to 1.5%.4. The magnesium alloy of claim 1 , wherein contents of the Ca and the Y range from 0.3% to 2.0% of a total weight of the magnesium alloy.5. The magnesium alloy of claim 1 , further comprising claim 1 , by weight claim 1 , greater than 0% but not greater than 1.0% of Mn.6. The magnesium alloy of claim 1 , further comprising claim 1 , by weight claim 1 , 0.1% to 1.0% of Zr.7. A method of manufacturing a magnesium alloy claim 1 , comprising:forming a magnesium alloy molten metal, which contains Mg, Al and Zn; ...

Carburizing steel having excellent cold forgeability and method of manufacturing the same

A carburizing steel has a composition containing, in mass %, C: 0.1-0.35%; Si: 0.01-0.22%; Mn: 0.3-1.5%; Cr: 1.35-3.0%; P: 0.018% or less; S: 0.02% or less; Al: 0.015-0.05%; N: 0.008-0.015%; and O: 0.0015% or less, each being contained in an amount within a range satisfying formulas (1), (2) and (3) below, and the balance of the composition being Fe and incidental impurities, and the carburizing steel having microstructures before spheroidizing annealing such that a total microstructure proportion of ferrite and pearlite is 85% or more and an average ferrite grain size is 25 μm or less. 3.1≧{([% Si]/2)+[% Mn]+[% Cr]}≧2.2   (1) [% C]−([% Si]/2)+([% Mn]/5)+2[% Cr]≧3.0   (2) 2.5≧[% Al]/[% N]≧1.7   (3) [% M] represents content (in mass %) of element M.

LEACH-RESISTANT LEADED COPPER ALLOYS

Copper alloys exhibiting enhanced oxidation resistance are provided by adding an amount of sulfur that is effective to enhance oxidative resistance. Such sulfur addition can be achieved by combining elemental forms of copper and sulfur and heating the mixture to form a molten alloy, or by forming a sulfur-rich pre-mix that is added to a base alloy composition. Forming a pre-mix provides improved homogeneity and distribution of the sulfur predominantly in the form of a metal sulfide. 1. A copper alloy having an elemental composition comprising:at least 50% copper by weight;less than about 10% lead by weight; andan amount of sulfur that is effective to enhance oxidative resistance of lead within a copper alloy.2. An alloy according to claim 1 , wherein the sulfur is present in the copper alloy in the form of a lead sulfide.3. An alloy according to claim 1 , further comprising zinc.4. An alloy according to claim 3 , wherein the zinc is present in an amount from about 10% to about 45% by weight.5. An alloy according to claim 4 , wherein the zinc is present from about 10% to about 15%.6. An alloy according to claim 1 , wherein the lead is present in an amount from about 0.1% to about 0.25% by weight.7. An alloy according to claim 1 , wherein the lead is present in an amount from about 0.25% by weight to about 10% by weight.8. An alloy according to claim 1 , further comprising one or more additives selected from the group consisting of silicon claim 1 , selenium claim 1 , tellurium claim 1 , tin claim 1 , manganese claim 1 , bismuth claim 1 , antimony claim 1 , phosphorous claim 1 , iron claim 1 , nickel claim 1 , aluminum claim 1 , and arsenic claim 1 , each of the one or more additives present in an amount of from about 0.1% to about 6% by weight.9. An alloy according to claim 1 , in which the sulfur is present in an amount that is between about 0.006% and about 4% by weight.10. An alloy according to claim 1 , in which the sulfur is present in an amount of from about 2% ...

APPARATUS AND METHOD FOR PRODUCING MG(2)Si(1-x)SN(x) POLYCRYSTAL

Provided are an apparatus and a method for producing an inexpensive MgSiSnpolycrystal that can be effectively used as thermoelectric conversion materials that can be expected to have a high performance index by doping if necessary. 1. An apparatus for producing an MgSiSnpolycrystal , comprising at least:{'sub': 2', '1-x', 'x, 'a reaction vessel for synthesizing an MgSiSnpolycrystal represented by the following formula (1) by charging a mixture of Mg particles and Si particles or Mg particles and Sn particles, or Mg—Si alloy particles or Mg—Sn alloy particles as a main starting material to cause a reaction;'}an inorganic fiber layer which is fixedly provided above the starting material charged into the reaction vessel and has air permeability, and in which the air permeability can be caused to disappear by a product generated by chemical reaction of vaporized Mg with oxygen during the synthesis of the polycrystal;heating means for heating the reaction vessel; and {'br': None, 'sub': 2', '1-x', 'x, 'MgSiSn\u2003\u2003(1)'}, 'control means for controlling a heating temperature and heating time of the reaction vessel,'}(in the formula (1), x is 0 to 1).2. The production apparatus according to claim 1 , wherein the inorganic fiber layer includes an upper inorganic fiber layer and a lower inorganic fiber layer claim 1 , and has Mg particles disposed on the whole surroundings of portions which are between the upper and lower inorganic fiber layers and in which the layers come into contact with an inner wall face of the reaction vessel.3. The production apparatus according to claim 1 , wherein the reaction vessel has a release layer on the inner wall face in contact with at least the starting material.4. The production apparatus according to claim 1 , wherein the reaction vessel has a release layer on the starting material so as to cover the whole starting material.5. A method for producing an MgSiSnpolycrystal represented by the following formula (1) in air using the ...

Aluminum alloy material and method of manufacturing aluminum alloy backboard

The present invention discloses an aluminum alloy material, which is made of raw material of aluminum alloy. The raw material of aluminum alloy consists of the following constituents by percentage of weight: graphene: 0.1%˜1%, carbon nano tube: 1%˜5%, the rest being Al. The aluminum alloy material of the present invention has a good performance of heat dissipation, the thermal conductivity is higher than 200 W/m. Meanwhile, the present invention further provides a method of manufacturing aluminum alloy backboard, in which method, the raw material of aluminum alloy is heated and melted in a heating furnace, afterwards, the raw material of aluminum alloy after melting is formed into an aluminum alloy backboard by die-casting, in this way, the utilization rate of material is increased and the manufacturing cost of the backboard is reduced.

HEAT TREATABLE L12 ALUMINUM ALLOYS

High temperature heat treatable aluminum alloys that can be used at temperatures from about −420° F. (−251° C.) up to about 650° F. (343° C.) are described. The alloys are strengthened by dispersion of particles based on the L1intermetallic compound AlX. These alloys comprise aluminum; silicon; at least one of scandium, erbium, thulium, ytterbium, and lutetium; and at least one of gadolinium, yttrium, zirconium, titanium, hafnium, and niobium. Magnesium and copper are optional alloying elements. 1. A method of forming a heat treatable aluminum alloy , the method comprising: about 4.0 to about 25.0 weight percent silicon;', 'about 0.2 to about 3.0 weight percent magnesium;', 'about 0.5 to about 5.0 weight percent copper;', 'at least one first element selected from the group comprising about 0.1 to about 0.5 weight percent scandium, about 0.1 to about 6.0 weight percent erbium, about 0.1 to about 10 weight percent thulium, about 0.1 to about 15.0 weight percent ytterbium, and about 0.1 to about 12 weight percent lutetium;', 'at least one second element selected from the group comprising about 0.1 to about 4.0 weight percent gadolinium, about 0.1 to about 4.0 weight percent yttrium, about 0.05 to about 1.0 weight percent zirconium, about 0.05 to about 2.0 weight percent titanium, about 0.05 to about 2.0 weight percent hafnium, and about 0.05 to about 1.0 weight percent niobium; and', 'the balance substantially aluminum;, '(a) forming a melt comprising(b) solidifying the melt to form a solid body; and(c) heat treating the solid body.2. The method of further comprising:refining the structure of the solid body by deformation processing including at least one of: extrusion, forging and rolling.3. The method of claim 1 , wherein solidifying comprises a casting process.4. The method of claim 1 , wherein solidifying comprises a rapid solidification process in which the cooling rate is greater than about 10° C./second including at least one of: powder processing claim 1 , ...

ALUMINUM ALLOY HAVING IMPROVED OXIDATION RESISTANCE, CORROSION RESISTANCE, OR FATIGUE RESISTANCE, AND DIE-CAST MATERIAL AND EXTRUDED MATERIAL PREPARED BY USING THE ALUMINUM ALLOY

Provided are an aluminum (Al) alloy prepared environment friendly and having excellent oxidation resistance properties, and a method of preparing the Al alloy. An oxidation-resistant Al alloy according to an embodiment of the present invention is casted by adding a magnesium (Mg) master alloy, in which a calcium (Ca)-based compound is distributed in an Mg matrix, into molten Al. An Al matrix includes the Ca-based compound. The Al alloy has superior oxidation resistance to a corresponding Al alloy not including the Ca-based compound. 1. An aluminum (Al) alloy casted by adding a magnesium (Mg) master alloy , in which a calcium (Ca)-based compound is distributed in an Mg matrix , into molten Al ,wherein an Al matrix includes the Ca-based compound, andwherein the Al alloy has superior oxidation resistance, corrosion resistance against salt water, or fatigue resistance to a corresponding Al alloy not including the Ca-based compound.2. The Al alloy of claim 1 , wherein the Ca-based compound comprises at least one of an Mg—Ca compound claim 1 , an Al—Ca compound claim 1 , and an Mg—Al—Ca compound claim 1 , and wherein the Mg—Ca compound comprises MgCa claim 1 , the Al—Ca compound comprises at least one of AlCa and AlCa claim 1 , and the Mg—Al—Ca compound comprises (Mg claim 1 ,Al)Ca.3. The Al alloy of claim 1 , wherein the Mg master alloy is prepared by adding a Ca-based additive into molten parent material including pure Mg claim 1 , or an Mg alloy including Al claim 1 , as a parent material.4. The Al alloy of claim 1 , wherein the Ca-based compound is formed by dispersively adding a Ca-based additive onto a surface of an upper part of molten Mg claim 1 , and then exhausting at least a portion of the Ca-based additive in the molten Mg.5. The Al alloy of claim 4 , wherein the Ca-based compound is formed by exhausting the Ca-based additive in the molten Mg in such a way that the Ca-based additive does not substantially remain in the Mg master alloy.6. The Al alloy of claim ...

Systems and methods for tubular welding wire

A tubular welding wire includes a granular core and a metal sheath encircling the granular core. Furthermore, the metal sheath includes at least approximately 0.3% manganese by weight and at least approximately 0.05% silicon by weight.

Magnetic body

A magnetic body which can reversibly change its magnetic force with a small external magnetic field while having a high residual magnetic flux density is provided. The magnetic body of the present invention has a residual magnetic flux density Br of at least 11 kG and a coercive force HcJ of 5 kOe or less, while an external magnetic field required for the residual magnetic flux density Br to become 0 is 1.10 HcJ or less.

ALUMINIUM ALLOY FREE FROM SI PRIMARY PARTICLES

The invention relates to an aluminium alloy, and aluminium alloy product consisting at least in part of an aluminium alloy, an ingot formed from an aluminium alloy, and also a method for producing an aluminium alloy. An improved soldering process is achieved by an AlSi aluminium alloy that has the following proportions of alloy components in percentage by weight: 2. The aluminium alloy product according to claim 1 ,characterised in thatthe P content is at most 5 ppm and/or the B content is at most 7 ppm.3. The aluminium alloy product according to or claim 1 ,characterised in thatTi content is 140 ppm to 240 ppm.4. The aluminium alloy product according to to claim 1 ,characterised in thatthe aluminium alloy product is a strip and comprises at least one further layer formed from aluminium or an aluminium alloy.5. The aluminium alloy product according to claim 4 ,characterised in thatthe strip is produced by roll cladding or composite casting.6. The aluminium alloy product according to one of to claim 4 ,characterised in thatthe aluminium alloy product is formed at least as part of a soldered component, in particular of a heat exchanger.7. A method for producing an aluminium alloy of an aluminium solder layer of an aluminium alloy product according to one of to claim 4 , in whichpure aluminium with a P content of at most 10 ppm and a B content of at most 10 ppm, the remainder being aluminium with unavoidable impurities individually of 0.05% by weight and in total at most 0.2% by weight, is melted in a smelting furnace, Fe with up to 0.8%,', 'Cu with up to 0.3%,', 'Mn with up to 0.10%,', 'Mg with up to 2.0%,', 'Zn with up to 0.20%,', 'Cr with up to 0.05%,, 'the following are optionally alloyed in the smelting furnace in percentage by weight as further alloy components or are already contained at least in part in the pure aluminium'}silicon is alloyed in the smelting furnace until a Si content from 4.5% by weight to 12% by weight of the aluminium alloy is achieved, ...

Layer-by-layer construction with bulk metallic glasses

Described herein is a method of selectively depositing molten bulk metallic glass (BMG). In one embodiment, a continuous stream or discrete droplets of molten BMG is deposited to selected positions. The deposition can be repeated as needed layer by layer. One or more layers of non-BMG can be used as needed.

Al-based alloy sputtering target and cu-based alloy sputtering target

Film-formation rate can be increased in the pre-sputtering and in the subsequent sputtering onto a substrate or the like, and sputtering failures such as splashes can be inhibited, by making an Al-based alloy or Cu-based alloy spurting target fulfill the following requirements (1) and/or (2) when the total area ratio of crystal orientations <001>±15°, <011>±15°, <111>±15°, <112>±15°, and <012>±15° in the sputtering surface normal direction in the depth within 1 mm from the uppermost surface of the sputtering target is referred to as a P value: (1) the area ratio PA of <011>±15° to the P value: 40% or lower; and (2) the total area ratio PB of <001>±15° and <111>±15° to the P value: 20% or higher.

Sputtering Target for Magnetic Recording Film

A sputtering target for a magnetic recording film which contains carbon, the sputtering target is characterized in that the ratio (I G /I D ) of peak intensities of the G-band to the D-band in Raman scattering spectrometry is 5.0 or less. The sputtering target for a magnetic recording film, which contains carbon powders dispersed therein, makes it possible to produce a magnetic thin film having a granular structure without using an expensive apparatus for co-sputtering; and in particular, the target is an Fe—Pt-based sputtering target. Carbon is a material which is difficult to sinter and has a problem that carbon particles are apt to form agglomerates. There is hence a problem that carbon masses are readily detached during sputtering to generate a large number of particles on the film after sputtering. The high-density sputtering target can solve these problems.

Austenitic fe-ni-cr alloy

An austenitic Fe—Ni—Cr alloy comprises C: 0.005˜0.03 mass %, Si: 0.15˜1.0 mass %, Mn: not more than 2.0 mass %, P: not more than 0.030 mass %, S: not more than 0.002 mass %, Cr: 18˜28 mass %, Ni: 20˜38 mass %, Mo: 0.10˜3 mass %, Co: 0.05˜2.0 mass %, Cu: less than 0.25 mass %, N: not more than 0.02 mass %, provided that PRE=Cr+3.3×Mo+16×N≧20.0 and PREH=411−13.2×Cr−5.8×Mo+0.1×Mo 2 +1.2×Cu≦145.0 (wherein each element symbol represents a content (mass %) of each element) and has an excellent corrosion resistance in air or under a wet environment even at a surface state having an oxide film formed by a intermediate heat treatment on the way of the production process.

Process for Producing an ALSCCA Alloy and also an AISCCA Alloy

A method for adding calcium to an aluminum-scandium alloy to produce an aluminum-scandium-calcium alloy involves combining aluminum, scandium, and calcium in a melt and the common melt is quenched at a high velocity. 112-. (canceled)13. A method for adding calcium to an aluminum-scandium alloy for producing an aluminum-scandium-calcium alloy , the method comprising the steps:a) combining aluminum, scandium and calcium together in a common melt; andb) quenching the common melt,{'sup': '3', 'wherein the calcium is added to the alloy in a ratio so that a density less than 2.6 g/cmis achieved.'}14. The method according to claim 13 , wherein the calcium is added to the alloy at a ratio of more than 0.5 wgt.-%.15. The method according to claim 13 , wherein the common melt is quenched by a rapid solidification process at a speed of more than 100 K/s.16. The method according to claim 13 , wherein the common melt is sprayed onto a substrate as a nozzle jet by a nozzle claim 13 , wherein the substrate is cooled and rotated during the application of the common melt.17. The method according to claim 16 , wherein the substrate is rotated so quickly that the quenched common melt is spun off from the substrate from an impact region of the nozzle jet on the substrate.18. The method according to claim 13 , wherein the method is carried out under atmospheric conditions.19. The method according to claim 13 , wherein step a) comprises the step of:combining an aluminum-magnesium master alloy, an aluminum-scandium pre-alloy, or an aluminum-calcium pre-alloy into the common melt.20. An aluminum-scandium-calcium alloy having a calcium ratio of more than 0.5 wgt.-% claim 13 , wherein the alloy has a density of less than 2.6 g/cm.21. The alloy according to claim 20 , wherein the alloy comprises 0.2 wgt-% to 3 wgt.-% scandium.22. The alloy according to claim 20 , wherein the alloy comprises:0.1 wgt.-% to 1.5 wgt.-% zirconium;1.0 wgt.-% to 8.0 wgt.-% magnesium; oradmixtures and undesired ...

Weld metal excellent in hydrogen embrittlement resistance

Disclosed is a weld metal which is formed by gas-shielded arc welding using a flux-cored wire, and which has a specific chemical composition, in which retained austenite particles are present in a number density of 2500 per square millimeter or more and in a total volume fraction of 4.0% or more based on the total volume of entire structures of the weld metal. The weld metal has excellent hydrogen embrittlement resistance and is resistant to cracking at low temperatures even when the weld metal has a high strength.

Friction stir welding method for metal material and metal material welded body obtained thereby

A friction stir welding method for a metal material for longitudinally welding members to be butted and then welded with complicated shape portions in section at end portions. The friction stir welding method includes preparing members to be welded and formed with excess thickness portions and a welding tool provided with a probe; performing a first welding to the members to be welded; inserting the welding tool from the excess thickness portion to cause plastic flow of the metal material subsequent to the butt-welding; and performing a second welding.

TITANIUM ALUMINIDE ALLOYS

Alloys based on titanium aluminides, such as γ (TiAl) which may be made through the use of casting or powder metallurgical processes and heat treatments. The alloys contain titanium, 38 to 46 atom % aluminum, and 5 to 10 atom % niobium, and they contain composite lamella structures with B19 phase and β phase there in a volume ratio of the B19 phase to β phase 0.05:1 and 20:1. 1. An alloy comprising titanium , 38 to 46 at % aluminum , and 5 to 10 at % niobium , and comprising composite lamella that contain a B19 phase and a β phase in a volume ratio of B19:13 of 0.05:1 to 20:1.2. The alloy of claim 1 , comprising/containing 38 to 42 at % aluminum.3. The alloy of claim 1 , comprising 38.5 to 42.5 at % aluminum claim 1 , and 0.5 to 5 at % chromium.4. The alloy of claim 1 , comprising 39 to 43 at % aluminum claim 1 , and 0.5 to 5 at % zirconium.5. The alloy of claim 1 , comprising 41 to 45 at % aluminum claim 1 , and 0.5 to 5 at % tantalum.6. The alloy of claim 1 , comprising 41 to 45 at % aluminum claim 1 , and 0.1 to 1 at % lanthanum claim 1 , scandium or yttrium.7. The alloy of claim 1 , comprising 41 to 45 at % aluminum claim 1 , and 0.5 to 5 at % vanadium.8. The alloy of claim 1 , comprising 41 to 44.5 at % aluminum claim 1 , and 0.5 to 5 at % iron or molybdenum.9. The alloy of claim 1 , comprising 41 to 46 at % aluminum claim 1 , and 0.5 to 5 at % tungsten.10. The alloy of claim 1 , comprising 41 to 46 at % aluminum claim 1 , and 0.5 to 5 at % manganese.11. The alloy of claim 1 , comprising 0.1 to 1 at % boron claim 1 , or 0.1 to 1 at % carbon claim 1 , or both 0.1 to 1 at % boron and 0.1 to 1 at % carbon.12. The alloy of claim 1 , the alloy containing composite lamella structures that include B19 phase and β phase in a volume ratio between 0.2:1 and 5:1.13. The alloy of claim 1 , the alloy containing composite lamella structures that include B19 phase and β phase in a volume ratio between 1:3 and 3:1.14. The alloy of claim 1 , the alloy containing composite ...

MG-AL-CA-BASED MASTER ALLOY FOR MG ALLOYS, AND A PRODUCTION METHOD THEREFOR

The present invention relates to an Mg—Al—Ca based master alloy for Mg alloys and to a production method therefor, and concerns an alloying master alloy used for magnesium or magnesium alloys. To this end, a feature of the invention is that, while the Ca:Al ration in the composition is maintained at between 7:3 and 1:9, based on percentages by weight in the alloy, a balance of Mg is added in an amount of up to 85% of the entire weight of the master alloy, based on percentage by weight. The production method comprises the steps of: preparing components of a master alloy by selecting a composition in which, while the Ca:Al ration in the composition is maintained at between 7:3 and 1:9, based on percentages by weight in the alloy, there is a balance of Mg in an amount of up to 85% of the entire weight of the master alloy, based on percentage by weight; sequentially melting Mg, Al and Ca; completely melting the components by applying an adequate amount of heat; and rapidly cooling the molten pool. 1. An Mg—Al—Ca based master alloy for Mg alloys , wherein while a Ca:Al composition ratio is maintained at between 7:3 and 1:9 , based on percentages by weight in the alloy , a balance of Mg is added in an amount of up to 85% of the entire weight of the master alloy , based on percentage by weight.2. The Mg—Al—Ca based master alloy of claim 1 , wherein the Ca:Al composition ratio is maintained at between 6:4 and 2:8 claim 1 , based on percentages by weight.3. The Mg—Al—Ca based master alloy of claim 1 , wherein the content of Al is contained in an amount of 15% or greater of the entire weight of the Mg—Al—Ca based master alloy claim 1 , based on percentage by weight.4. The Mg—Al—Ca based master alloy of claim 1 , wherein while the Ca:Al composition ratio is maintained at 4.3:5.7 claim 1 , Mg is contained in an amount of 65% of the entire weight of the master alloy claim 1 , based on percentage by weight.5. A production method of an Mg—Al—Ca based master alloy for Mg alloys ...

Layer system comprising an nicocraly double protective layer with differing chromium content and alloy

A two-layered NiCoCrAlY layer is provided. The layer includes a bottom and a top layer. Through the use of a two-layered NiCoCrAlY layer, it is possible to reduce the formation of cracks in the thermally grown oxide layer as forms on account of the protective action of the NiCoCrAlY layers.

CASTING ALUMINUM ALLOY WITH DISPERSED CNT AND METHOD FOR PRODUCING THE SAME

The present disclosure provides a casting aluminum alloy with dispersed carbon nanotubes (CNT), which is molded by charging an oxide-coated CNT in the range of 1 to 5 vol % into a molten Al—Ti—B-based alloy, and stirring the resulting mixture. The aluminum alloy has enhanced elasticity by forming a TiBcompound in a structure, and a method for producing the same. 1. A casting aluminum alloy , comprising:carbon nanotubes (CNT), wherein the CNT are oxide coated and present in the range of 1 to 5 vol %; andan Al—Ti—B alloy, wherein the CNT are evenly dispersed throughout the Al—Ti—B alloy.2. The casting aluminum alloy of claim 1 , wherein the Al—Ti—B-based alloy is formed by mixing/stirring a molten Al—Ti-based alloy and a molten Al—B-based alloy by an in-situ method.3. The casting aluminum alloy of claim 2 , wherein the Al—Ti-based alloy comprises Ti in the range of 2 to 7 wt %.4. The casting aluminum alloy of claim 2 , wherein the Al—Ti-based alloy comprises Ti at about 2 wt %.5. The casting aluminum alloy of claim 2 , wherein the Al—Ti-based alloy comprises Ti at about 3 wt %.6. The casting aluminum alloy of claim 2 , wherein the Al—Ti-based alloy comprises Ti at about 4 wt %.7. The casting aluminum alloy of claim 2 , wherein the Al—Ti-based alloy comprises Ti at about 5 wt %.8. The casting aluminum alloy of claim 2 , wherein the Al—Ti-based alloy comprises Ti at about 6 wt %.9. The casting aluminum alloy of claim 2 , wherein the Al—Ti-based alloy comprises Ti at about 7 wt %.10. The casting aluminum alloy of claim 2 , wherein the Al—B-based alloy comprises B in the range of 1 to 3 wt %.11. The casting aluminum alloy of claim 2 , wherein the Al—B-based alloy comprises B at about 1 wt %.12. The casting aluminum alloy of claim 2 , wherein the Al—B-based alloy comprises B at about 2 wt %.13. The casting aluminum alloy of claim 2 , wherein the Al—B-based alloy comprises B at about 3 wt %.14. A method for producing the casting aluminum alloy of comprising:(a) forming a ...

Compositional variations of tungsten tetraboride with transition metals and light elements

A composition includes tungsten (W); at least one element selected form the group of elements consisting of boron (B), beryllium (Be) and silicon (Si); and at least one element selected from the group of elements consisting of titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), zirconium (Zr), niobium (Nb), molybdenum (Mo), ruthenium (Ru), hafnium (Hf), tantalum (Ta), rhenium (Re), osmium (Os), iridium (Ir), lithium (Li) and aluminum (Al). The composition satisfies the formula W 1-x M x X y wherein X is one of B, Be and Si; M is at least one of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Ru, Hf, Ta, Re, Os, Ir, Li and Al; x is at least 0.001 and less than 0.999; and y is at least 4.0. A tool is made from or coated with this composition.

Alloy production method and alloy produced by the same

Provided are an alloy production method that may easily distribute a compound in a matrix of an alloy while maintaining the quality of a molten metal, and an alloy produced by the same. In accordance with an exemplary embodiment, the method includes forming a molten metal in which a mother alloy including at least one kind of first compound and a casting metal are melted, and casting the molten metal, wherein the mother alloy is a magnesium mother alloy or aluminum mother alloy.

METHOD FOR PRODUCING POWDER METAL COMPOSITIONS FOR WEAR AND TEMPERATURE RESISTANCE APPLICATIONS

A powder metal composition for high wear and temperature applications is made by atomizing a melted iron based alloy including 3.0 to 7.0 wt. % carbon; 10.0 to 25.0 wt. % chromium; 1.0 to 5.0 wt. % tungsten; 3.5 to 7.0 wt. % vanadium; 1.0 to 5.0 wt. % molybdenum; not greater than 0.5 wt. % oxygen; and at least 40.0 wt. % iron. The high carbon content reduces the solubility of oxygen in the melt and thus lowers the oxygen content to a level below which would cause the carbide-forming elements to oxidize during atomization. The powder metal composition includes metal carbides in an amount of at least 15 vol. %. The microhardness of the powder metal composition increases with increasing amounts of carbon and is typically about 800 to 1,500 Hv50. 1. A method of forming a powder metal composition , comprising the steps of:providing a melted iron based alloy including 3.0 to 7.0 wt. % carbon, 10.0 to 25.0 wt. % chromium, 1.0 to 5.0 wt. % tungsten, 3.5 to 7.0 wt. % vanadium, 1.0 to 5.0 wt. % molybdenum, not greater than 0.5 wt. % oxygen, and at least 40.0 wt. % iron, based on the total weight of the melted iron based alloy; andatomizing the melted iron based alloy to provide atomized droplets of the iron based alloy.2. The method of including grinding the atomized droplets to remove oxide skin from the atomized droplets.3. The method of claim 1 , wherein the atomizing step includes forming metal carbides in an amount of at least 15 vol. % claim 1 , based on the total volume of the melted iron based alloy.4. The method of claim 3 , wherein the metal carbides are selected from the group consisting of: M8C7 claim 3 , M7C3 claim 3 , M6C claim 3 , wherein M is at least one metal atom and C is carbon.5. The method of claim 4 , wherein M8C7 is (V63Fe37)8C7; M7C3 is selected from the group consisting of: (Cr34Fe66)7C3 claim 4 , Cr3.5Fe3.5C3 claim 4 , and Cr4Fe3C3; and M6C is selected from the group consisting of: Mo3Fe3C claim 4 , Mo2Fe4C claim 4 , W3Fe3C claim 4 , and W2Fe4C.6. ...

CONTROL OF RECRYSTALLIZATION IN COLD-ROLLED AlMn(Mg)ScZr SHEETS FOR BRAZING APPLICATIONS

A method for fabricating an article from an aluminum alloy is provided. The method includes providing an aluminum alloy containing at least 0.04 wt % Sc, at least 0.5 wt % Mn, at least 0.5 wt % Zr, at least 0.05 wt % Mg, and at least 90 wt % Al; casting the alloy into a sheet; subjecting the cast alloy to a thermal cycle which includes raising the temperature of the alloy along a first temperature gradient, holding the temperature of the alloy at a temperature T for a period of time t, and reducing the temperature of the alloy along a second temperature gradient; and utilizing the sheet in a brazing operation. 1A. A method for fabricating an article from an aluminum alloy , comprising: (a) at least 0.04 wt % Sc,', '(b) at least 0.5 wt % Mn,', '(c) at least 0.05 wt % Zr,', '(d) at least 0.05 wt % Mg, and', '(e) at least 90 wt % Al;, 'providing an aluminum alloy containing'}casting the alloy into a sheet;subjecting the cast alloy to a thermal cycle which includes raising the temperature of the alloy along a first temperature gradient, holding the temperature of the alloy at a temperature T for a period of time t, and reducing the temperature of the alloy along a second temperature gradient; andutilizing the sheet in a brazing operation.21A. The method of claim A , wherein T is at least 250° C.31A. The method of claim A , wherein T is at least 300° C.41A. The method of claim A , wherein T is at least 350° C.51A. The method of claim A , wherein T is at least 400° C.61A. The method of claim A , wherein T is at least 450° C.71A. The method of claim A , wherein T is within the range of 250° C. to 450° C.81A. The method of claim A , wherein T is within the range of 300° C. to 400° C.91A. The method of claim A , wherein t is 30 minutes.101A. The method of claim A , wherein t is 1 hour.111A. The method of claim A , wherein t is 2 hours.121A. The method of claim A , wherein t is 4 hours.131A. The method of claim A , wherein utilizing the sheet in a brazing operation exposes ...

TITANIUM-FREE ALLOY

Titanium-free alloy which has great resistance to pitting and crevice corrosion and a high yield point in the strain-hardened state and includes (in wt %) a maximum of 0.02% C, a maximum of 0.01% S, a maximum of 0.03% N, 20.0-23.0% Cr, 39.0-44.0% Ni, 0.4-<1.0% Mn, 0.1-<0.5% Si, >4.0-<7.0% Mo, a maximum of 0.15% Nb, >1.5-<2.5% Cu, 0.05-<0.3% Al, a maximum of 0.5% Co, 0.001-<0.005% B, 0.005-<0.015% Mg, the remainder consisting of Fe and smelting-related impurities. 4: Alloy according to claim 1 , which if necessary contains (in wt %) V>0-1.0% claim 1 , especially 0.2-0.7%.5: Process for the manufacture of an alloy that has a composition according to claim 1 , whereina) the alloy is melted openly in continuous or ingot casting,b) to eliminate the segregations caused by the increased molybdenum content, a homogenizing annealing of the produced blooms/billets is performed at 1150-1250° C. for 15 to 25 h, whereinc) the homogenizing annealing is performed in particular following a first hot forming.6: Use of the alloy according to as a structural part in the oil and gas industry.7: Use according to claim 6 , wherein the structural parts exist in the production forms sheet claim 6 , strip claim 6 , pipe (longitudinally welded and seamless) claim 6 , bar or as forging. The invention relates to a titanium-free alloy with high pitting and crevice corrosion resistance as well as high offset yield strength and tensile strength in the cold-worked condition.The high-corrosion-resistant material Alloy 825 is used for critical applications in the chemical industry and in the offshore technology. It is marketed under the material number 2.4858 and has the following chemical composition: C≦0.025%, S≦0.015%, Cr 19.5-23.5%, Ni 28-46%, Mn≦1%, Si≦0.5%, Mo 2.5-3.5%, Ti 0.6-1.2%, Cu 1.5-3%, Al≦0.2%, Co≦1%, Fe the rest.For new applications in the oil and gas industry, the pitting and crevice corrosion resistance (problem 1) as well as the offset yield strength and tensile strength (problem 2 ...

HYDROGEN-ABSORBING ALLOY, ALLOY POWDER FOR ELECTRODE, NEGATIVE ELECTRODE FOR ALKALINE STORAGE BATTERY, AND ALKALINE STORAGE BATTERY

A hydrogen-absorbing alloy is provided in which an X-ray diffraction image generated by CuKα rays has at least one peak selected from (1) peak Psp1 at 2θ=32.25±0.15°, (2) peak Psp2 at 2θ=33.55±0.15°, and (3) peak Psp3 at 2θ=37.27±0.15°. 1. A hydrogen-absorbing alloy , wherein (1) a peak Psp1 at 2θ=32.25±0.15°;', '(2) a peak Psp2 at 2θ=33.55±0.15°; and', '(3) a peak Psp3 at 2θ=37.27±0.15°., 'an X-ray diffraction image generated by CuKα rays has at least one peak selected from2. The hydrogen-absorbing alloy according to having a crystal structure belonging to a space group of P63/mmc.3. The hydrogen-absorbing alloy according to claim 1 , whereina ratio I1/Imax of an intensity I1 of the peak Psp1 to an intensity Imax of a maximum peak Pmax of the X-ray diffraction image in a range of 2θ=10 to 90° is 0.01 or more.4. The hydrogen-absorbing alloy according to claim 1 , whereina ratio I2/Imax of an intensity I2 of the peak Psp2 to the intensity Imax of the maximum peak Pmax of the X-ray diffraction image in the range of 2θ=10 to 90° is 0.01 or more.5. The hydrogen-absorbing alloy according to claim 1 , whereina ratio I3/Imax of an intensity I3 of the peak Psp3 to the intensity Imax of the maximum peak Pmax of the X-ray diffraction image in the range of 2θ=10 to 90° is 0.01 or more.6. An alloy powder for an electrode claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the hydrogen-absorbing alloy according to .'}7. The alloy powder for the electrode according to claim 6 , wherein the element L is at least one element selected from a set consisting of elements in group 3 and elements in group 4 on a periodic table,', 'the element M is an alkaline-earth metal element,', 'the element E is at least one element selected from a set consisting of: transition metal elements in groups 5 to 11 on the periodic table; elements in group 12; elements in group 13 periods 2 to 5; elements in group 14 periods 3 to 5; N; P; and S, and', 'a molar ratio mE of the element E ...

DEVICE AND METHOD FOR MANUFACTURING AN ACTIVE ALLOY

An device for manufacturing an active alloy includes: a melting chamber including: a working pipe surrounded by an induction coil and forming a working area; a chamber base disposed below the working pipe and communicated with the working pipe, and including: a gas inlet hole; a vacuum pump connection port; and a vacuum sensor, for measuring a vacuum degree in the working pipe; a chamber door communicated with the chamber base; a first bracket passing through the chamber base, and moving towards a direction away from or near the working area; a second bracket extending into the working pipe, and moving towards a direction away from or near the working area; and a material recycling seat which can extend into the chamber base in a push and pull way. 1. A device for manufacturing an active alloy , comprising: a working pipe surrounded by an induction coil and forming with a working area;', a gas inlet hole;', 'a vacuum pump connection port; and', 'a vacuum sensor, for measuring a vacuum degree in the working pipe;, 'a chamber base disposed below the working pipe and communicated with the working pipe, and comprising, 'a chamber door communicated with the chamber base;', 'a first bracket passing through the chamber base, and moving towards a direction away from or near the working area;', 'a second bracket extending into the working pipe, and moving towards a direction away from or near the working area; and', 'a material recycling seat extending into the chamber base in a push and pull way;, 'a melting chamber comprisinga vacuum pump unit physically connected to the vacuum pump connection port, for making the melting chamber form a vacuum confined space; andan inert gas supply unit communicated with the melting chamber via the gas inlet hole.2. The device for manufacturing an active alloy according to claim 1 , wherein:the chamber door is used for placing a first active metal into the chamber base;the first bracket is used for lifting up the position of the first ...

MnAl ALLOY

An object of the present invention is to provide a Mn-based alloy exhibiting metamagnetism over a wide temperature range. A MnAl alloy according to the present invention exhibits metamagnetism and has crystal grains containing a τ-MnAl phase and crystal grains containing a γ2-MnAl phase. Assuming that the area of the crystal grains containing the τ-MnAl phase in a predetermined cross section is B, and the area of the crystal grains containing the γ2-MnAl phase therein is A, the value of B/A is 0.2 or more and 21.0 or less. When the ratio of the areas between the crystal grains containing the τ-MnAl phase and those containing the γ2-MnAl phase is controlled within the above range, metamagnetism is imparted to the MnAl alloy and, thus, it is possible to obtain metamagnetism over a wide temperature range, particularly, over a temperature range of −100° C. to 200° C. 1. A MnAl alloy exhibiting metamagnetism comprising crystal grains containing a τ-MnAl phase and crystal gains containing a γ2-MnAl phase.2. The MnAl alloy as claimed in claim 1 , wherein a value of B/A is 0.2 or more and 21.0 or less claim 1 , where an area of the crystal grains containing the τ-MnAl phase in a predetermined cross section of the MnAl alloy is B claim 1 , and an area of the crystal grains containing the γ2-MnAl phase in a predetermined cross section of the MnAl alloy is A.3. The MnAl alloy as claimed in claim 2 , wherein the value of B/A is 1.0 or more and less than 4.0.4. The MnAl alloy as claimed in claim 1 , wherein an average crystal grain diameter of the crystal grains containing the τ-MnAl phase is 0.1 μm or more and 1.0 μm or less.5. The MnAl alloy as claimed in claim 1 , wherein when a composition of the MnAl alloy is expressed by MnAl claim 1 , 45≤b<55 is satisfied.6. The MnAl alloy as claimed in claim 5 , wherein 45≤b<52 is satisfied.7. The MnAl alloy as claimed in claim 1 , wherein a magnetic structure of the τ-MnAl phase has an antiferromagnetic structure in a non-magnetic field ...

ADDITIVES FOR IMPROVING THE CASTABILITY OF ALUMINUM-BORON CARBIDE COMPOSITE MATERIAL

The present disclosure provides additives capable of undergoing a peritectic reaction with boron in aluminum-boron carbide composite materials. The additive may be selected from the group consisting of vanadium, zirconium, niobium, strontium, chromium, molybdenum, hafnium, scandium, tantalum, tungsten and combination thereof, is used to maintain the fluidity of the molten composite material, prior to casting, to facilitate castability. 1. A method of preparing a cast composite material , said method comprising: the additive is selected from the group consisting of chromium, molybdenum, vanadium, niobium, zirconium, strontium, scandium, and any combination thereof; and', 'a sample of the composite material has a fluidity, after having been heated, prior to casting, to a temperature of about 700° C. for about 120 minutes, corresponding to a cast length of at least 100 mm when measured using a mold having a groove for containing the sample, the groove having a width of about 33 mm, a height of between about 6.5 mm and about 4.0 mm and being downwardly inclined, from an horizontal axis, of about 10°; and, '(a) combining (i) a molten aluminum alloy comprising up to 1.8 w/w % of silicon based on a total weight of the aluminum alloy and an additive capable of undergoing a peritectic reaction with boron with (ii) between 4 and 40 v/v % of a source of boron carbide particles so as to provide a molten composite material comprising products of the peritectic reaction between the additive and boron and dispersed boron carbide particles, wherein(b) casting the molten composite so as to form the cast composite material.2. The method of claim 1 , wherein the cast length is at least 190 mm.3. The method of claim 1 , further comprising claim 1 , prior to step (b) claim 1 , holding the molten composite material during a holding time and casting the molten composite during a casting time claim 1 , wherein the combination of the holding time and the casting time is at least 120 minutes ...

LEAD-FREE SOLDER COMPOSITIONS

A solder may include zinc, aluminum, magnesium and gallium. The zinc may be present in an amount from about 82% to 96% by weight of the solder. The aluminum may be present in an amount from about 3% to about 15% by weight of the solder. The magnesium may be present in an amount from about 0.5% to about 1.5% by weight of the solder. The gallium may be present in an amount between about 0.5% to about 1.5% by weight of the solder. 1. A solder composition comprising:about 82 to 96 weight percent zinc;about 3 to about 15 weight percent aluminum;about 0.5 to about 1.5 weight percent magnesium; andabout 0.5 to about 1.5 weight percent gallium.2. The solder composition of claim 1 , comprising:about 0.75 to about 1.25 weight percent magnesium; andabout 0.75 to about 1.25 weight percent gallium.3. The solder composition of claim 1 , comprising:about 1.0 weight percent magnesium; andabout 1.0 weight percent gallium.4. The solder composition of claim 1 , and further comprising:about 0.1 to about 2.0 weight percent tin.5. The solder composition of claim 1 , and further comprising at least one dopant present in an amount from about 0.001 to about 0.5 weight percent.6. The solder composition of claim 5 , wherein the at least one dopant comprises one or more of indium claim 5 , phosphorous claim 5 , germanium or copper.7. The solder composition of claim 5 , wherein the dopant comprises phosphorous and at least one member selected from the group consisting of tin and copper.8. The solder composition of claim 1 , and further comprising:about 10 ppm to about 1000 ppm phosphorous; andabout 0.1 to about 2 weight percent tin.9. The solder composition of claim 1 , and further comprising:about 25 ppm to about 300 ppm phosphorous; andabout 0.5 to about 1.5 weight percent tin.10. The solder composition of claim 1 , and further comprising:about 25 ppm to about 300 ppm phosphorous; andabout 0.1 to about 1 percent copper.11. The solder composition of claim 1 , and further comprising:less than ...

METHOD FOR MANUFACTURING A NICKEL-TITANIUM ALLOY USING A HIGH VACUUM CRUCIBLELESS LEVITATION MELTING PROCESS

A method for manufacturing a nickel-titanium alloy includes steps of: placing a titanium material on a first bracket, and placing a nickel material on a second bracket; vacuumizing the vacuum confined space of the melting chamber to below a pressure of 10Torr, and lifting up the titanium material placed on the first bracket to a working area of an induction coil; introducing inert gases; starting the induction coil, to make the titanium material in a levitation state and electromagnetically stirred and heated; dropping the first bracket; measuring whether the temperature of the working area of the induction coil reaches a predetermined temperature range; when the first active metal is in the half molten state, dropping the nickel material placed on the second bracket to be added to the titanium material, and obtaining a homogenizing nickel-titanium alloy by means of electromagnetic stirring and heating; and recycling the homogenizing nickel-titanium alloy. 1. A method for manufacturing a nickel-titanium alloy using a high vacuum crucibleless levitation melting process , the method comprising:step A: placing a titanium material on a first bracket, and placing a nickel material on a second bracket, so as to make the titanium nickel and materials located in a vacuum confined space of a melting chamber;{'sup': '−5', 'step B: vacuumizing the vacuum confined space of the melting chamber to below a pressure of 10Torr, and lifting up the titanium material placed on the first bracket to a working area of an induction coil;'}step C: introducing inert gases, to prevent the titanium material from producing an oxidization reaction in a subsequent high-temperature process;step D: starting the induction coil, to make the titanium material in a levitation state and electromagnetically stirred and heated;step E: dropping the first bracket, to make the titanium material stably levitate and electromagnetically stirred and heated;step F: measuring whether the temperature of the working ...

Aluminum alloy wire rod and producing method therefor

A wire rod made of an aluminum alloy. The aluminum alloy includes Al crystal grains, an Al—Zr compound, and an Al—Co—Fe or Al—Ni—Fe compound. The aluminum alloy includes high-angle tilt crystal grain boundaries, each of which has a difference between crystal orientations in both its sides of 15 degrees or more, and low-angle tilt crystal grain boundaries, each of which has a difference between crystal orientations in both its sides of 2 degrees or more and less than 15 degrees. An average grain diameter of ones of the Al crystal grains surrounded by the high-angle boundaries is 12 μm or more. An average grain diameter of the ones of the Al crystal grains surrounded by the high-angle boundaries, ones of the Al crystal grains surrounded by the high-angle boundaries and the low-angle boundaries, and ones of the Al crystal grains surrounded by the low-angle boundaries, is 10 μm or less.

Lead-free solder compositions

A solder wire composition may include 85 to 95 weight percent bismuth, and at least 5 weight percent copper. The solder wire composition may have a diameter of less than about 1 millimeter, and an elongation at break of at least 20%.

METHOD FOR PRODUCING TWO-PHASE Ni-Cr-Mo ALLOYS

In a method for making a wrought nickel-chromium-molybdenum alloy having homogeneous, two-phase microstructures the alloy in ingot form is subjected to a homogenization treatment at a temperature between 2025° F. and 2100° F. , and then hot worked at start temperature between 2025° F. and 2100° F. The alloy preferably contains 18.47 to 20.78 wt. % chromium, 19.24 to 20.87 wt. % molybdenum, 0.08 to 0.62 wt. % aluminum, less than 0.76 wt. % manganese, less than 2.10 wt. % iron, less than 0.56 wt. % copper, less than 0.14 wt. % silicon, up to 0.17 wt. % titanium, less than 0.013 wt. % carbon, and the balance nickel.

Solder Alloy for Power Devices and Solder Joint Having a High Current Density

A solder joint which is used in power devices and the like and which can withstand a high current density without developing electromigration is formed of a Sn—Ag—Bi—In based alloy. The solder joint is formed of a solder alloy consisting essentially of 2-4 mass % of Ag, 2-4 mass % of Bi, 2-5 mass % of In, and a remainder of Sn. The solder alloy may further contain at least one of Ni, Co, and Fe. 16-. (canceled)7. A process for preventing electromigration in a solder joint in which a current with a current density of 5-100 kA/cmflows through at least a portion thereof , comprising:providing a solder joint between an electronic part and a Cu land or Ni land of a printed circuit board; and{'sup': '2', 'applying the current having the current density of 5-100 kA/cmthrough at least the portion of the solder joint,'}wherein the solder joint is formed of a solder alloy consisting of 2-4 mass % of Ag, 2-4 mass % of Bi, 2-5 mass % of In, optionally at least one element selected from 0.05-0.3 mass % of Ni and 0.1-0.32 mass % of Co, and a remainder of Sn, and{'sub': 6', '5', '6', '5, 'sup': '2', 'wherein a reaction layer comprised of an intermetallic compound of (CuNi)(SnIn)or (CuCo)(SnIn)is formed between the solder alloy and the land, so that electromigration is prevented under a current density of 5-100 kA/cm.'}8. The process for preventing electromigration in a solder joint according to claim 7 , wherein a content of Ag in the solder alloy is 2.5-4 mass %.9. The process for preventing electromigration in a solder joint according to claim 7 , wherein a content of Bi in the solder alloy is 2-3 mass %.10. The process for preventing electromigration in a solder joint according to claim 7 , wherein a content of In in the solder alloy is 3-4 mass %.11. The process for preventing electromigration in a solder joint according to claim 7 , wherein the solder alloy consists of 2-4 mass % of Ag claim 7 , 2-4 mass % of Bi claim 7 , 2-5 mass % of In claim 7 , 0.05-0.3 mass % of Ni claim ...

METHOD FOR MANUFACTURING SOLDER PRODUCT, SOLDER, SOLDERED COMPONENT, PRINTED WIRING BOARD, PRINTED CIRCUIT BOARD, WIRE, SOLDERED PRODUCT, FLEXIBLE PRINTED BOARD, ELECTRONIC COMPONENT, METHOD FOR MANUFACTURING TIN ARTICLE, METHOD FOR MANUFACTURING TIN INTERMEDIATE PRODUCT, TIN INTERMEDIATE PRODUCT, AND CONDUCTIVE MEMBER

A solder product includes: a lead-free solder part containing tin as a main component and a metal element other than lead as a secondary component; and a carboxylic acid having 10 to 20 carbons, the carboxylic acid being mainly distributed over the surface of the solder product to form a surface layer . The carboxylic acid is preferably a fatty acid having 12 to 16 carbons, and more preferably a palmitic acid. 1. A method for manufacturing a solder product , the method comprising:a heating step of heating and melting a raw material to obtain a molten metal, the raw material containing tin as a main component, a metal element other than lead as a secondary component, and a carboxylic acid having 10 to 20 carbons;a filtration step of filtering the molten metal set to a temperature from 230° C. to 260° C. with a filter having an aperture size of not more than 10 μm; anda cooling step of cooling and solidifying the filtered molten metal and depositing the carboxylic acid at a surface of the solder product.2. The method for manufacturing a solder product according to claim 1 , whereinin the filtration step, the filter is heated.3. The method for manufacturing a solder product according to claim 1 , whereinin the filtration step, wire mesh made of stainless steel is used as the filter.4. The method for manufacturing a solder product according to claim 1 , whereinin the heating step, the raw material contains copper as the metal element serving as the secondary component.5. A method for manufacturing a solder product claim 1 , the method comprising:a heating step of heating and melting a raw material to obtain a molten metal, the raw material containing tin as a main component, a metal element other than lead as a secondary component, and a carboxylic acid having 10 to 20 carbons;a removing step of removing, from the molten metal set to a temperature from 230° C. to 260° C., solids having a diameter of more than 10 μm and present within the molten metal; anda cooling step ...

Al-RICH HIGH-TEMPERATURE TiAl ALLOY

The present invention relates to a TiAl alloy for use at high temperatures which has aluminum and titanium as main constituents. The TiAl alloy has an aluminum content of greater than or equal to 50 at. % and a matrix of γ-TiAl and at least one phase of Al and Ti incorporated in the γ-TiAl matrix which is different from γ-TiAl, as well as depositions of oxides and/or carbides and/or silicides. In addition, the invention relates to a method for producing the alloy and to the use of the alloy for components of turbo-machines, in particular aircraft engines. 1. A TiAl alloy for use at high temperatures , wherein the alloy comprises aluminum and titanium as main constituents , has an aluminum content of greater than or equal to 50 at. % , and comprises a matrix of γ-TiAl and at least one phase of Al and Ti incorporated in the γ-TiAl matrix which is different from γ-TiAl and comprises Al and Ti , as well as depositions of oxides and/or carbides and/or silicides.2. The TiAl alloy of claim 1 , wherein the alloy comprises up to 75 at. % of aluminum.3. The TiAl alloy of claim 1 , wherein the alloy comprises up to 65 at. % of aluminum.4. The TiAl alloy of claim 1 , wherein the alloy comprises up to 60 at. % of aluminum.5. The TiAl alloy of claim 1 , wherein the γ-TiAl matrix occupies at least 50 vol. % of a microstructure of the alloy.6. The TiAl alloy of claim 1 , wherein the γ-TiAl matrix has a closed or net-like or globular structure.7. The TiAl alloy of claim 1 , wherein the phases of Al and Ti which are different from γ-TiAl comprise β-phase and/or one or more Al-rich intermetallic phases.8. The TiAl alloy of claim 7 , wherein the Al-rich intermetallic phases comprise at least one of AlTi and AlTi.9. The TiAl alloy of claim 1 , wherein the depositions comprise at least ZrOand/or YO.10. The TiAl alloy of claim 1 , wherein the alloy comprises one or more of Nb claim 1 , Mo claim 1 , W claim 1 , Co claim 1 , Cr claim 1 , V claim 1 , Zr claim 1 , Si claim 1 , C claim 1 , Er ...

HIGH-PERFORMANCE 5000-SERIES ALUMINUM ALLOYS AND METHODS FOR MAKING AND USING THEM

5000 series aluminum wrought alloys with high strength, high formability, excellent corrosion resistance, and friction-stir weldability, and methods of making those alloys. 1. An aluminum alloy comprising:about 3% to about 5% by weight magnesium;about 0.1% to about 4% by weight zinc;about 0.6% to about 1% by weight manganese;about 0.1% to about 0.3% by weight chromium;about 0.4% to about 0.8% by weight zirconium;aluminum as the remainder; and{'sub': 3', '2', '3, 'sup': 20', '3, 'a dispersion of coherent AlZr nanoscale precipitates with an Llcrystal structure in an aluminum matrix, the AlZr nanoscale precipitates having an average radius of no more than about 20 nm and having an average number density of no less than about 5×10per m.'}2. The aluminum alloy of claim 1 , further comprising scandium at a concentration of no more than about 0.15% by weight.3. The aluminum alloy of claim 1 , further comprising copper at a concentration of no more than about 1% by weight.4. The aluminum alloy of claim 1 , further comprising a dispersion of the incoherent AlMn dispersoids having an average radius in the range of about 50 nm to about 200 nm.5. The aluminum alloy of claim 1 , further comprising a dispersion of AlMn claim 1 , AlCr or AlCrintermetallic phases in the range of about 50 nm to about 800 nm in size.6. The aluminum alloy of claim 5 , further comprising a dispersion of the incoherent AlMn dispersoids having an average radius in the range of about 50 nm to about 200 nm.7. The aluminum alloy of claim 1 , wherein the alloy has mechanical strength comparable to commercial high-strength AA7039-T6 and AA7075-T6 alloys.8. The aluminum alloy of claim 1 , wherein the alloy has the same or better corrosion resistance compared to commercial AA5083 alloy.9. The aluminum alloy of claim 1 , wherein the alloy has better creep resistance compared to commercial AA5083 alloy at a temperature range from about 25° C. to about 450° C.10. The An aluminum alloy of claim 1 , wherein the ...

NI-BASED SUPERALLOY PART RECYCLING METHOD

A method for recycling a Ni-based single crystal superalloy part or unidirectionally solidified superalloy part provided with a thermal barrier coating containing at least a ceramic on a surface of a Ni-based single crystal superalloy substrate or Ni-based unidirectionally solidified superalloy substrate, in which the method including the steps of: melting and desulfurizing a Ni-based single crystal superalloy part or Ni-based unidirectionally solidified superalloy part at a temperature of the melting point or more of the Ni-based single crystal superalloy or Ni-based unidirectionally solidified superalloy and less than the melting point of the ceramic; heating a casting mold for a recycled Ni-based single crystal superalloy part or casting mold for a recycled Ni-based unidirectionally solidified superalloy part to a temperature of the melting point or more of the Ni-based single crystal superalloy or Ni-based unidirectionally solidified superalloy; pouring the desulfurized melted Ni-based single crystal superalloy or Ni-based unidirectionally solidified superalloy into the casting mold, and producing a melting stock or growing a Ni-based single crystal superalloy or Ni-based unidirectionally solidified superalloy; and removing the melting stock or the recycled Ni-based single crystal superalloy part or recycled Ni-based unidirectionally solidified superalloy part from the casting mold. In this way, a method for recycling a Ni-based superalloy part, by which the recycle cost of a Ni-based superalloy part and the lifetime cost of a highly efficient gas turbine engine using a Ni-based superalloy part can be significantly reduced, and further a Ni-based superalloy part having the same high-temperature strength and oxidation resistance as those of a newly produced Ni-based superalloy part can be obtained, is provided. 1. A method for recycling a Ni-based single crystal superalloy part provided with a thermal barrier coating containing at least a ceramic on a surface of ...

High strength and high toughness magnesium alloy and method of producing the same

A high strength and high toughness magnesium alloy, characterized in that it is a plastically worked product produced by a method comprising preparing a magnesium cast product containing a atomic % of Zn, b atomic % in total of at least one element selected from the group consisting of Dy, Ho and Er, a and b satisfying the following formulae (1) to (3), and the balance amount of Mg, subjecting the magnesium alloy cast product to a plastic working to form a plastically worked product, and it has a hcp structure magnesium phase and a long period stacking structure phase at an ordinary temperature; 0.2≦ a ≦5.0  (1) 0.2≦ b ≦5.0  (2) 0.5 a −0.5≦ b   (3)

ALUMINUM PLATE AND COLLECTOR FOR STORAGE DEVICE

An object of the present invention is to provide an aluminum plate which is excellent in terms of both step suitability and working characteristics and a collector for a storage device using the same. The aluminum plate of the present invention is an aluminum plate having a plurality of through-holes formed in a thickness direction, in which a thickness of the aluminum plate is 40 μm or less, an average opening diameter of the through-holes is 0.1 to 100 μm, an average opening ratio by the through-holes is 2% to 30%, a content of Fe is 0.03% by mass or more, and a ratio of the content of Fe to a content of Si is 1.0 or more. 1. An aluminum plate comprising:a plurality of through-holes formed in a thickness direction,wherein a thickness of the aluminum plate is 40 μm or less,an average opening diameter of the through-holes is 0.1 to 100 μm,an average opening ratio by the through-holes is 2% to 30%,a content of Fe is 0.03% by mass or more, and a ratio of the content of Fe to a content of Si is 1.0 or more.2. The aluminum plate according to claim 1 ,wherein recess portions which have an average opening diameter of 0.1 μm to 100 μm and are not penetrated are provided on at least one surface, and an occupancy ratio of the recess portions is 0.5% or more.3. The aluminum plate according to claim 1 ,wherein an arithmetic average roughness Ra of the surface is 0.2 μm or more.4. The aluminum plate according to claim 2 ,wherein an arithmetic average roughness Ra of the surface is 0.2 μm or more.5. The aluminum plate according to claim 1 ,wherein the aluminum plate has a rectangular shape or a square shape, andthe average opening ratio by the through-holes is 0% to 5% at peripheral portions of at least one pair of opposite sides out of two pairs of the opposite sides,here, the peripheral portion refers to a region covering 50 mm from an end portion of the aluminum plate which constitutes a side.6. The aluminum plate according to claim 2 ,wherein the aluminum plate has a ...

CRYSTAL GRAIN REFINER FOR MAGNESIUM ALLOY, CONTAINING ALUMINUM, A METHOD FOR PREPARING MAGNESIUM ALLOY, AND MAGNESIUM ALLOY MANUFACTURED BY SAME METHOD

A grain refiner for a magnesium alloy according to the present invention contains aluminum (Al) and manganese (Mn), and contains a compound of aluminum (Al) and manganese (Mn) in the microstructure thereof, wherein the grain refiner is composed of a structure in which, in the compound of aluminum (Al) and manganese (Mn), the area of the compound having an Al/Mn compositional (atomic) ratio of 4-4.5 is larger than the area of the compound having an Al/Mn compositional (atomic) ratio of 5.5-6.5. When the grain refiner is added to molten magnesium, crystal grains can be refined to 50-100 μm. 1. A refiner for a magnesium alloy , the refiner comprising:aluminum (Al) and manganese (Mn); anda compound of aluminum (Al) and manganese (Mn) in a microstructure,wherein, in the compound of Al and Mn, an area of a compound having an Al/Mn compositional (atomic) ratio of 4 to 4.5 is greater than an area of a compound having an Al/Mn compositional (atomic) ratio of 5.5 to 6.5.2. The refiner of claim 1 , wherein claim 1 , in the compound of Al and Mn claim 1 , an area fraction of the compound having an Al/Mn compositional (atomic) ratio of 4 to 4.5 is 50% or more.3. The refiner of claim 1 , wherein claim 1 , in the compound of Al and Mn claim 1 , an area fraction of the compound having an Al/Mn compositional (atomic) ratio of 4 to 4.5 is 70% or more claim 1 , andwherein an area fraction of the compound having an Al/Mn compositional (atomic) ratio of 5.5 to 6.5 is 30% or less.4. The refiner of claim 1 , wherein the microstructure of the refiner comprises a compound phase of Al and Mn claim 1 , in which at least one of a flat interface and an acicular interface is formed.5. The refiner of claim 1 ,wherein a matrix of the microstructure is composed of aluminum.6. The refiner of claim 1 , to comprising 5 wt % to 15 wt % of manganese (Mn) claim 1 , and aluminum (Al) as well as unavoidable impurities as a remainder.7. The refiner of claim 1 , further comprising 1 wt % or less of carbon (C ...

COPPER ALLOY MATERIAL AND PRODUCTION METHOD THEREFOR

A copper alloy material production method is provided. A copper raw material including not higher than 30 ppm by mass of oxygen is melted to form a molten copper. Not lower than 4 ppm by mass and not higher than 55 ppm by mass of titanium is added to the molten copper. After the adding of the titanium, not lower than 100 ppm by mass and not higher than 7000 ppm by mass of magnesium is added. 1. A copper alloy material production method , comprising:melting a copper raw material including not higher than 30 ppm by mass of oxygen to form a molten copper;adding not lower than 4 ppm by mass and not higher than 55 ppm by mass of titanium to the molten copper; andafter the adding of the titanium, adding not lower than 100 ppm by mass and not higher than 7000 ppm by mass of magnesium.2. The copper alloy material production method according to claim 1 , wherein in the adding of the titanium claim 1 , the titanium not less than the content of the oxygen included in the molten copper is added.3. The copper alloy material production method according to claim 1 , wherein in the adding of the titanium claim 1 , the titanium is added in such a manner that a ratio of the titanium to the oxygen included in the molten copper is 1:1 to 8:1.5. The copper alloy material production method according to claim 1 , further comprising:before the adding of the magnesium, removing an oxide of the titanium formed in the adding of the titanium.6. The copper alloy material production method according to claim 5 , wherein in the removing of the oxide claim 5 , an inert gas is bubbled into the molten copper.7. A copper alloy material claim 5 , consisting of:not higher than 30 ppm by mass of oxygen;not lower than 4 ppm by mass and not higher than 55 ppm by mass of titanium;not lower than 100 ppm by mass and not higher than 7000 ppm by mass of magnesium; andthe balance consisting of copper and inevitable impurities,wherein a titanium oxide is dispersed in a copper parent phase, while the magnesium ...

Highly processable single crystal nickel alloys

Alloys, processes for preparing the alloys, and articles including the alloys are provided. The alloys can include, by weight, about 4% to about 7% aluminum, 0% to about 0.2% carbon, about 7% to about 11% cobalt, about 5% to about 9% chromium, about 0.01% to about 0.2% hafnium, about 0.5% to about 2% molybdenum, 0% to about 1.5% rhenium, about 8% to about 10.5% tantalum, about 0.01% to about 0.5% titanium, and about 6% to about 10% tungsten, the balance essentially nickel and incidental elements and impurities.

Freefall forming of bulk metallic glass feedstock and sheet material

The disclosure is directed to freefall methods and apparatuses for preparation of amorphous BMG feedstock and sheet material. In certain aspects, the disclosure relates to methods and apparatuses for contactless formation of BMG feedstock and sheet material via a drop-tower. In certain embodiments, the methods comprise releasing droplets of molten amorphous alloy into a cooled, pressurized chamber of a drop-tower, wherein the droplets traverse the chamber through freefall to thereby form BMG feedstock or sheet material.

HIGH-STRENGTH DISSOLVABLE ALUMINUM ALLOY AND PREPARATION METHOD THEREFOR

The present invention relates to a technical field of functional materials, and in particular to a high-strength dissolvable aluminum alloy and a preparation method therefor. In order to solve the problem of a relatively low strength of the existing dissolvable materials, a high-strength dissolvable aluminum alloy material and a preparation method therefor are provided. The raw materials of the high-strength dissolvable aluminum alloy comprise: aluminum, a functional metal, and a metal oxide; the addition amounts of the aluminum and the functional metals are: 60-99 wt. % of aluminum, 0.9-39.9 wt. % of the functional metals; and the addition amount of the metal oxide is: 0.01-11 wt. %. The high-strength dissolvable aluminum alloy can not only meet the usage requirements of high mechanical strength in service, but can also rapidly degrade after the service is completed. In addition, the preparation method of this material is simple, low in cost, and easy for large-scale production. 1. A high-strength soluble aluminum alloy , wherein raw materials of the high-strength soluble aluminum alloy comprise aluminum , functional metals and metallic oxide , addition amounts of aluminum and the functional metals are as follows: 60-99 wt. % of aluminum and 0.9-39.9 wt. % of functional metals , and an addition amount of the metallic oxide is 0.01-11 wt. %.2. The high-strength soluble aluminum alloy according to claim 1 , wherein the raw materials of the high-strength soluble aluminum alloy comprise aluminum claim 1 , functional metals and metallic oxide claim 1 , an addition amount of aluminum is 98-99 wt. % claim 1 , and an addition amount of the functional metals and the metallic oxide is 1-2 wt. %.3. The high-strength soluble aluminum alloy according to claim 1 , wherein addition amounts of aluminum and the functional metals are as follows: 60-99 wt. % of Al claim 1 , 0.1-20 wt. % of Sn claim 1 , 0-10 wt. % of Si claim 1 , 0.1-10 wt. % of Mn claim 1 , 0-10 wt. % of Mg claim 1 , ...

Aluminum Alloys with High Strength and Cosmetic Appeal

The disclosure provides aluminum alloys having varying ranges of alloying elements and properties. 1. An aluminum alloy comprising:3.4 to 4.9 wt % Zn;1.3 to 2.1 wt % Mg,no greater than 0.06 wt % Cu,no greater than 0.06 wt % Zr,0.06 to 0.08 wt % Fe,no greater than 0.05 wt % Si, andthe balance is aluminum and incidental impurities.2. The aluminum alloy according to claim 1 , wherein the alloy having a wt % ratio of Zn to Mg from 1.8 -3.5.3. The aluminum alloy according to claim 1 , comprising4.7-4.9 wt % Zn and 1.75-1.85 wt % Mg.4. The aluminum alloy according to claim 1 , comprising4.3-4.5 wt % Zn and 1.45-1.55 wt % Mg.5. The aluminum alloy according to claim 1 , comprising3.9-4.1 wt % Zn and 1.55-1.65 wt % Mg.6. The aluminum alloy according to claim 1 , comprising4.3-4.5 wt % Zn and 1.35-1.45 wt % Mg.7. The aluminum alloy according to claim 1 , comprising 3.5-3.7 wt % Zn and 1.95-2.05 wt % Mg.8. The aluminum alloy according to claim 1 , comprising 4.2-4.4 wt % Zn and 1.85-1.95 wt % Mg.9. The aluminum alloy according to claim 1 , comprising 0.03-0.06 wt % Zr.10. The aluminum alloy according to claim 1 , comprising 0.04-0.05 wt % Zr.11. The aluminum alloy according to claim 1 , comprising less than 0.01 wt % Zr.12. The aluminum alloy according to claim 1 , comprising 0.025-0.06 wt % Cu.13. The aluminum alloy according to claim 1 , comprising 0.04-0.05 wt % Cu.14. The alloy according to claim 1 , comprising:no greater than 0.02 wt % Mn,no greater than 0.02 wt % Cr,no greater than 0.02 wt % Ti,no greater than 0.02 wt % Ga,no greater than 0.02 wt % Sn,no greater than 0.03 wt % total of Mn and Cr,no greater than 0.02 wt % of any one additional element, andno greater than 0.10 wt % total of additional elements.15. The alloy according to claim 1 , wherein the stress corrosion cracking of the alloy is greater than 12 days to failure measured according to G30/G44 ASTM standards.16. The alloy according to claim 1 , wherein the alloy comprises equiaxed grains claim 1 , wherein ...

COMPOSITIONAL VARIATIONS OF TUNGSTEN TETRABORIDE WITH TRANSITION METALS AND LIGHT ELEMENTS

A composition includes tungsten (W); at least one element selected form the group of elements consisting of boron (B), beryllium (Be) and silicon (Si); and at least one element selected from the group of elements consisting of titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), zirconium (Zr), niobium (Nb), molybdenum (Mo), ruthenium (Ru), hafnium (Hf), tantalum (Ta), rhenium (Re), osmium (Os), iridium (Ir), lithium (Li) and aluminum (Al). The composition satisfies the formula WMXwherein X is one of B, Be and Si; M is at least one of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Ru, Hf, Ta, Re, Os, Ir, Li and Al; x is at least 0.001 and less than 0.999; and y is at least 4.0. A tool is made from or coated with this composition. 123.-. (canceled)24. A method for preparing a composition comprising:tungsten (W);at least one element selected from the group of elements consisting of boron (B), beryllium (Be) and silicon (Si); andat least one element selected from the group of elements consisting of titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), zirconium (Zr), niobium (Nb), molybdenum (Mo), ruthenium (Ru), hafnium (Hf), tantalum (Ta), osmium (Os), iridium (Ir), lithium (Li) and aluminum (Al); {'br': None, 'sub': 1-x', 'x', 'y, 'WMX'}, 'wherein said composition satisfies the formulawherein X is at least one of B, Be and Si;M is at least one of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Ru, Hf, Ta, Os, Ir, Li and Al;x is at least 0.001 and less than 0.999; andy is at least 4.0;the method comprising:a) mixing together elemental powders of W, X, and M to form a mixture;b) optionally pressing the mixture into a pellet; andc) heating the mixture or pellet.25. The method of claim 24 , wherein X is B.26. The method of claim 24 , wherein M is one of Ta claim 24 , Mn claim 24 , Cr claim 24 , Ta and Mn claim 24 , or Ta and Cr.27. The ...

Delaying Recovery in Al-Fe-Si-Mn-Mg Impact Extrusion Alloys Using Zirconium

A method of delaying the process of recovery of metals, a method to make an aluminum alloy comprising zirconium, and an apparatus comprising an aluminum alloy and zirconium are provided. In some embodiments, the aluminum alloy of can be formed from recycled aluminum alloys.

NIOBIUM-BASED ALLOY THAT IS RESISTANT TO AQUEOUS CORROSION

In various embodiments, a metal alloy resistant to aqueous corrosion consists essentially of or consists of niobium with additions of tungsten, molybdenum, and one or both of ruthenium and palladium. 123.-. (canceled)24. A method of chemical processing , the method comprising:providing equipment for chemical processing; andexposing the equipment to an acidic process fluid,wherein the equipment is composed of a metallic alloy consisting essentially of (i) 1 weight percent-10 weight percent tungsten, (ii) 0.5 weight percent-10 weight percent molybdenum, (iii) at least one of ruthenium or palladium collectively present at 0.2 weight percent-5 weight percent, and (iv) the balance niobium.25. The method of claim 24 , wherein a grain size of the metallic alloy is greater than 6 microns.26. The method of claim 24 , wherein the alloy comprises both ruthenium and palladium.27. The method of claim 24 , wherein the alloy contains 2 weight percent-10 weight percent tungsten.28. The method of claim 24 , wherein the alloy contains 2 weight percent-10 weight percent molybdenum.29. The method of claim 24 , wherein the alloy contains at least one of ruthenium or palladium collectively present at 2 weight percent-5 weight percent.30. The method of claim 24 , wherein the acidic process fluid comprises hydrochloric acid claim 24 , nitric acid claim 24 , phosphoric acid claim 24 , sulfuric acid claim 24 , and/or acetic acid.31. The method of claim 24 , wherein the equipment has the form of a plate claim 24 , a sheet claim 24 , or a tube.32. The method of claim 24 , wherein the equipment comprises a heat exchanger claim 24 , a lined vessel claim 24 , a static mixer claim 24 , or a pump.33. The method of claim 24 , wherein a temperature of the acidic process fluid ranges from approximately 80° C. to approximately 250° C.34. The method of claim 24 , wherein (i) providing the equipment comprises alloying niobium with tungsten claim 24 , molybdenum claim 24 , and at least one of ruthenium or ...

High-Purity Titanium Ingots, Manufacturing Method Therefor, and Titanium Sputtering Target

Provided is a high-purity titanium ingot having a purity, excluding an additive element and gas components, of 99.99 mass % or more, wherein at least one nonmetallic element selected from S, P, and B is contained in a total amount of 0.1 to 100 mass ppm as the additive component and the variation in the content of the nonmetallic element between the top, middle, and bottom portions of the ingot is within ±200%. Provided is a method of manufacturing a titanium ingot containing a nonmetallic element in an amount of 0.1 to 100 mass ppm, wherein S, P, or B, which is a nonmetallic element, is added to molten titanium as an intermetallic compound or a master alloy to produce a high-purity titanium ingot having a purity, excluding an additive element and gas components, of 99.99 mass % or more. It is an object of the present invention to provide a high-purity titanium having decreased intra- and inter-ingot variations in the content of the nonmetallic element, a uniform structure, and improved strength by containing at least one nonmetallic element selected from S, P, and B. 1. A high-purity titanium ingot having a purity , excluding an additive element and gas components , of 99.99 mass % or more , wherein at least one nonmetallic element selected from sulfur (S) , phosphorus (P) , and boron (B) is contained in a total amount of 0.1 to 100 mass ppm as the additive component and the variation in the content of the nonmetallic element between the top , middle , and bottom portions of the ingot is within ±200%.2. The titanium ingot according to claim 1 , wherein the variation in the content of the nonmetallic element in a plane in a radial direction at the middle portion of the ingot is within ±200%.3. The titanium ingot according to claim 2 , wherein the variation in the content of the nonmetallic element between different ingots is within ±200%.4. The titanium ingot according to claim 2 , wherein the variation in the content of the nonmetallic element is within ±100%.5. ...

NEGATIVE ACTIVE MATERIAL, NEGATIVE ELECTRODE AND LITHIUM BATTERY INCLUDING THE NEGATIVE ACTIVE MATERIAL, AND METHOD OF PREPARING THE NEGATIVE ACTIVE MATERIAL

A negative active material, a lithium battery including the negative active material, and a method of preparing the negative active material. The negative active material includes a silicon-based alloy including Si, Al, and Fe. The silicon-based alloy includes an active phase of silicon nanoparticles and an inactive phase of SiAlFeand SiFe in a ratios suitable to improve the lifespan of the lithium battery. 1. A negative active material comprising a silicon-based alloy comprising silicon nanoparticles dispersed in an alloy matrix , the alloy matrix comprising SiAlFeand SiFe , wherein the ratio of the sum of the atomic fractions of Si , Al , and Fe as SiAlFeto the sum of the atomic fractions of Si and Fe as SiFe is about 2 to about 12.2. The negative active material of claim 1 , wherein the ratio of the sum of the atomic fractions of Si claim 1 , Al claim 1 , and Fe as SiAlFeto the sum of the atomic fractions of Si and Fe as SiFe is about 4 to about 10.3. The negative active material of claim 1 , wherein the silicon-based alloy comprises about 40 at % to about 80 at % of Si claim 1 , about 10 at % to about 40 at % of Al claim 1 , and about 5 at % to about 25 at % of Fe claim 1 , and the total sum of atomic fractions of Si claim 1 , Al claim 1 , and Fe is 100 at %.4. The negative active material of claim 1 , wherein in the silicon-based alloy claim 1 , a ratio of the atomic fraction of Al to the atomic fraction of Fe is about 0.7 to about 1.1.5. The negative active material of claim 1 , wherein the silicon-based alloy is a pulverized powder having a D50 of about 0.3 μm to about 10 μm.6. The negative active material of claim 1 , wherein the silicon-based alloy comprises inactive silicon and active silicon claim 1 , the alloy matrix comprising the inactive silicon and the silicon nanoparticles comprising the active silicon.7. The negative active material of claim 6 , wherein in the silicon-based alloy claim 6 , an amount of the active silicon is about 40 at % to about ...

ELECTRIC FURNACE STEEL FOR CARBURIZING WITHOUT MO ADDITION AND MANUFACTURING METHOD THEREFOR

An electric furnace steel contains, by mass %, C: 0.12 to 0.28%, Si: equal to or less than 0.15%, Mn: 0.65 to 0.95%, P: equal to or less than 0.035%, S: equal to or less than 0.035%, Cr: 1.35 to 1.90%, Al: 0.020 to 0.050%, and N: 0.0080 to 0.0230%. A scrap material is selected such that Cu, Ni, and Mo that derive from the scrap material and are thus contained as impurities in the electric furnace steel satisfy Expression 1. The electric furnace steel further contains Fe and unavoidable impurities as a remainder thereof. Accordingly, the electric furnace steel can secure carburizing quality equivalent to or higher than that of Cr—Mo steel, and can have properties equivalent to or higher than that of Cr—Mo steel, without adding Mo. 1. An electric furnace steel for carburizing without Mo addition that is manufactured by an electric furnace using a scrap material as a main raw material thereof ,the electric furnace steel comprising, by mass %, C: 0.12 to 0.28%, Si: equal to or less than 0.15%, Mn: 0.65 to 0.95%, P: equal to or less than 0.035%, S: equal to or less than 0.035%, Cr: 1.35 to 1.90%, Al: 0.020 to 0.050%, and N: 0.0080 to 0.0230%, {'br': None, 'sup': '0.76', '([Cu]+2×[Ni])×[Mo]≧0.0040\u2003\u2003Expression 1, 'the scrap material being selected such that Cu, Ni, and Mo that are derived from the scrap material and are contained as impurities in the electric furnace steel satisfy Expression 1,'}(where [Cu], [Ni], and [Mo] respectively mean contents (mass %) of Cu, Ni, and Mo in the steel),the electric furnace steel further comprising Fe and unavoidable impurities as a remainder thereof.2. The electric furnace steel for carburizing without Mo addition of claim 1 , whereinthe upper limit of the Cr comprised in the electric furnace steel is less than 1.80 A %.3. A manufacturing method for an electric furnace steel for carburizing without Mo addition that is manufactured by an electric furnace using a scrap material as a main raw material thereof claim 1 , ...

Nickel based alloy with high melting range suitable for brazing super austenitic steel

The invention discloses a nickel based brazing filler metal in form of an alloy containing or consisting of between 20 wt % and 35 wt % chromium, between 7 wt % and 15 wt % iron and between 2.5 wt % and 9 wt % silicon, between 0 wt % and 15 wt % molybdenum, unavoidable impurities and the balance being nickel. The solidus temperature of the brazing filler shall be between 1140° C. and 1240° C. The brazing filler metal is suitable for production of catalytic converters and heat exchangers. The invention also discloses a brazing method.

CARBON-BASED NANOTUBE/METAL COMPOSITE AND METHODS OF MAKING THE SAME

A nanocomposite comprising metal and carbon-based nanotube (CNT), wherein the carbon-based nanotube comprises a doping element selected from the group consisting of boron (B), iron (Fe), zinc (Zn), nickel (Ni), cadmium (Cd), tin (Sn), antimony (Sb), Nitrogen (N) and the combination thereof, and methods of making the nanocomposite. 1. A nanocomposite comprising metal and carbon-based nanotube (CNT) , wherein the carbon-based nanotube comprises a doping element selected from the group consisting of boron (B) , iron (Fe) , zinc (Zn) , nickel (Ni) , cadmium (Cd) , tin (Sn) , antimony (Sb) , Nitrogen (N) and the combination thereof.2. The nanocomposite of claim 1 , wherein the metal is aluminum or copper.3. A method of synthesizing a nanocomposite claim 1 , the method comprising:(a) suspending a doped carbon-based nanotube and metal in a suspension, wherein the carbon-based nanotube comprises a doping element selected from the group consisting of boron (B), iron (Fe), zinc (Zn), nickel (Ni), cadmium (Cd), tin (Sn), antimony (Sb), Nitrogen (N) and the combination thereof; and(b) inductively melting the suspension comprising the carbon-based nanotube and metal to provide a metal, doped CNT nanocomposite.4. The method of claim 3 , wherein the metal is aluminum or copper.5. The method of claim 3 , wherein the doping element is presented as an adatom claim 3 , cluster claim 3 , nanoparticle claim 3 , or a combination thereof.6. The method of claim 3 , wherein the carbon-based nanotube is selected from a SWCNT claim 3 , DWCNT and MWCNT.7. The method of claim 3 , wherein the suspension further comprises a dispersant.8. The method of claim 3 , wherein the doping element is comprised on the surface of the CNT claim 3 , within the skeletal structure of the CNT claim 3 , or a combination thereof.9. The method of claim 3 , wherein the CNT is doped via a gas phase claim 3 , liquid phase or solid phase.10. The method of claim 9 , wherein the liquid phase further comprises a halogen.11 ...

METHOD FOR PRODUCING NATIONAL-STANDARD MAGNESIUM ALLOY INGOTS ON THE BASIS OF MAGNESIUM ALLOY WASTE MATERIAL

A method comprises: sorting and removing impurities from magnesium alloy waste material, and cleaning and drying said material, the cleaning comprising high-pressure rinsing, pickling, and water washing, performed in sequence; preheating the magnesium alloy waste material obtained in step a, and adding material, melting, refining, removing impurities, and alloying to obtain a magnesium alloy liquid; casting ingots from the magnesium alloy liquid obtained in step b, to obtain magnesium alloy ingots conforming to national standards. The method directly takes magnesium alloy waste material as a raw material to produce magnesium alloy ingots conforming to national standards; the addition of costly high-purity magnesium is unnecessary, and the number of castings in which the amount of harmful elements meets specifications accounts for 98% or more of the total number of castings; 2% slightly exceed specifications, which does not constitute a severe number of times specifications are exceeded. 1. A method for producing GB-standard magnesium alloy ingots from magnesium alloy waste material , comprising the following steps:Step a. sorting, removing impurities from, cleaning and drying the magnesium alloy waste material, wherein the cleaning involves high-pressure cleaning, pickling, and water rinse performed in sequence;Step b. preheating, melting, refining, removing impurities from, and alloying the magnesium alloy waste material obtained in Step a, so as to obtain magnesium alloy liquid; andStep c. casting ingots using the magnesium alloy liquid obtained in Step b, so as to obtain GB-standard magnesium alloy ingots.2. The method of claim 1 , wherein in Step a claim 1 , the high-pressure cleaning is performed under a pressure of 5 to 20 MPa.3. The method of claim 1 , wherein Step a involves cutting claim 1 , sorting and removing impurities from claim 1 , high-pressure cleaning claim 1 , pickling claim 1 , water rinse and drying the magnesium alloy waste material claim 1 , ...

ZINC ALLOY AND MANUFACTURING METHOD THEREOF

The present application relates to a zinc alloy and a manufacturing method thereof. The zinc alloy of the present application contains Al at an amount of 3.5-4.3 wt % and Mg at an amount of 0.005-0.018 wt %, and the rest of the alloy is Zn and unavoidable impurities. The alloy has excellent crack resistance, high casting yield, excellent polishing and electroplating properties, and can meet the high surface quality requirements of castings. It is suitable for die-casting production of components of plumbing and sanitary ware, hardware accessories, electronic appliances, toys and the like. 1. A zinc alloy , wherein the zinc alloy contains Al at an amount of 3.5-4.3 wt % and Mg at an amount of 0.005-0.018 wt % , and a remainder of the alloy is Zn and unavoidable impurities.2. The zinc alloy according to claim 1 , wherein the amount of Al in the zinc alloy is 3.7 to 4.2 wt %.3. The zinc alloy according to claim 1 , wherein the amount of Al in the zinc alloy is 3.9-4.1 wt %.4. The zinc alloy according to claim 1 , wherein the amount of Mg in the zinc alloy is 0.005-0.015 wt %.5. The zinc alloy according to claim 2 , wherein the amount of Mg in the zinc alloy is 0.005-0.015 wt %.6. The zinc alloy according to claim 3 , wherein the amount of Mg in the zinc alloy is 0.005-0.015 wt %.7. The zinc alloy according to claim 1 , wherein Cu with an amount of 0.2-1.0 wt % can be selectively added to the zinc alloy.8. The zinc alloy according to claim 2 , wherein Cu with an amount of 0.2-1.0 wt % can be selectively added to the zinc alloy.9. The zinc alloy according to claim 3 , wherein Cu with an amount of 0.2-1.0 wt % can be selectively added to the zinc alloy.10. The zinc alloy according to claim 4 , wherein Cu with an amount of 0.2-1.0 wt % can be selectively added to the zinc alloy.11. The zinc alloy according to claim 1 , wherein the amount of Cu in the zinc alloy is 0.5-1.0 wt %.12. The zinc alloy according to claim 2 , wherein the amount of Cu in the zinc alloy is 0.5-1.0 ...

Precipitation Hardening High Entropy Alloy and Method of Manufacturing the Same

High-entropy alloy, particularly a precipitation hardening high entropy alloy, is provided as a component material used in electromagnetic, chemical, shipbuilding, mechanical, and other applications, a component material used in extreme environments requiring high strength and good corrosion resistance, and the like. 1. Precipitation hardening high-entropy alloy , the high-entropy alloy comprising:four or more elements selected from the group consisting of more than 5 wt % to 35 wt % or less of iron (Fe), more than 5 wt % to 35 wt % or less of chromium (Cr), more than 5 wt % to 35 wt % or less of nickel (Ni), more than 5 wt % to 35 wt % or less of manganese (Mn), more than 5 wt % to 35 wt % or less of cobalt (Co), more than 5 wt % to 35 wt % or less of copper (Cu);one or more elements of 1) and 2):1) one or more of 0.01 wt % to 1.5 wt % of C, 0.01 wt % to 1.5 wt % of N, and 0.01 at % to 1.5 wt % of B,2) one or more of 0.01 wt % to 5 wt % of Ti, 0.01 wt % to 3 wt % of Zr, 0.01 wt % to 5 wt % of Hf, 0.01 wt % to 5 wt % of Mo, 0.01 wt % to 5 wt % of W, 0.01 wt % to 5 wt % of Nb, 0.01 wt % to 5 wt % of V, 0.01 wt % to 5 wt % of Ta, 0.01 wt % to 5 wt % of Ag, 0.01 wt % to 5 wt % of Si, 0.01 wt % to 5 wt % of Cu, and 0.01 wt % to 5 wt % of Ge, and inevitable residual impurities;wherein the high-entropy alloy is provided with a matrix in which precipitates are dispersed.2. The precipitation hardening high-entropy alloy of claim 1 , wherein the precipitate is one or more of 1) and 2):{'sub': x', 'x', 'x, '1) one or more of carbides (MC), nitrides (MN), carbonitrides (MC,N), and borides (MBx); and'}2) one or more of precipitates that include one or more of Ti, Zr, Hf, Mo, W, Nb, V, Ta, Ag, Si, Cu, or Ge, and intermetallic compounds thereof.3. The precipitation hardening high-entropy alloy of claim 1 , wherein the precipitate has the diameter of 0.5 nm to 50 nm claim 1 , and the spacing between dispersed precipitates is 1 nm to 500 nm.4. A method of manufacturing a ...

METHOD FOR MANUFACTURING QUASICRYSTAL AND ALUMINA MIXED PARTICULATE REINFORCED MAGNESIUM-BASED COMPOSITE MATERIAL

A method for manufacturing a quasicrystal and alumina mixture particles reinforced magnesium matrix composite, includes manufacturing a quasicrystal and alumina mixture particles reinforcement phase, including preparing raw materials for the quasicrystal and alumina mixture particles reinforcement phase including a pure magnesium ingot, a pure zinc ingot, a magnesium-yttrium alloy in which the content of yttrium is 25% by weight, and nanometer alumina particles, the elements having the following proportion by weight 40 parts of magnesium, 50-60 parts of zinc, 5-10 parts of yttrium and 8-20 parts of nanometer alumina particles of which the diameter is 20-30 nm, pretreating the metal raw materials, cutting the pure magnesium ingot, the pure zinc ingot and the magnesium-yttrium alloy into blocks, removing oxides attached on the surface of each metal block, placing the blocks into a resistance furnace to preheat at 180° C. to 200° C., and filtering out the absolute ethyl alcohol after standing, and drying. 18-. (canceled)10. The method for manufacturing a quasicrystal and alumina mixture particles reinforced magnesium matrix composite according to claim 9 , wherein the shielding gas is a mixture gas of air claim 9 , carbon dioxide and tetrafluoroethane claim 9 , and the volume ratio of air claim 9 , carbon dioxide and tetrafluoroethane in the mixture gas is 74:25:1 claim 9 , the mixture gas is introduced to a position of 1 cm-2 cm above the metal melt surface claim 9 , the flow rate of the shielding gas is 1 L/min claim 9 , the exhaust pressure is 0.2 MPa to 0.4 MPa.11. The method for manufacturing a quasicrystal and alumina mixture particles reinforced magnesium matrix composite according to claim 9 , wherein the magnesium-manganese alloy claim 9 , the magnesium-silicon alloy and the magnesium-calcium alloy are coated with an aluminum foil claim 9 , and are pressed into the melt by a bell jar prior to stirring.12. The method for manufacturing a quasicrystal and alumina ...

Calcium-based metallic glass alloy molded body for medical use and production method thereof

It is an object of the present invention to provide a production method of a calcium-based metallic glass alloy molded body for medical use which has a biodegradable property, has a mechanical strength equal to or higher than that of metal materials, and enables complex molding and a wide range of applications. The calcium-based metallic glass alloy molded body for medical use is produced by mixing a metal powder including a calcium powder, alloying the mixed metal powder, and sintering the alloyed mixed metal powder.

METHOD FOR PRODUCING FERROALLOY CONTAINING NICKEL

The invention relates to a method for producing a ferroalloy containing nickel. From a fine-grained raw material containing iron and chromium and a fine-grained raw material containing nickel, a mixture is formed with binding agent, the mixture is agglomerated so that first formed objects of desired size are obtained. The objects formed are heat treated in order to strengthen the objects so that the heat treated objects withstand conveyance and loading into a smelter furnace. Further, the objects are smelted under reducing circumstances in order to achieve ferrochromenickel, a ferroalloy of a desired composition containing at least iron, chromium and nickel. 1. A method for producing a nickel containing ferroalloy , comprising:forming a mixture of a raw material containing iron and chromium, a raw material containing nickel, and a binder material,agglomerating the mixture to form objects having a desired size,heat-treating the objects at a temperature sufficient for removal of water of crystallization bound in the raw material, whereby the raw material containing nickel is calcinated and the objects are strengthened so that the heat-treated objects are conveyable, andsmelting the objects under reducing conditions in order to produce ferrochromenickel containing chromium and nickel in a ratio between 1.5 and 5,and wherein the raw material containing iron and chromium supplies substantially all the iron and chromium in the ferrochromenickel.2. A method according to claim 1 , wherein agglomeration comprises pelletizing.3. A method according to claim 1 , wherein heat-treating comprises sintering.4. A method according to claim 1 , wherein the proportion of nickel in the nickel-bearing raw material in the mixture to be agglomerated is 10-25 weight %.5. A method according to claim 1 , comprising smelting the objects under reducing conditions in order to produce ferrochromenickel with a ratio of chromium to nickel between 2.0 and 3.1.6. A method according to claim 1 , ...

COPPER ALLOY STRIP EXHIBITING IMPROVED DIMENSIONAL ACCURACY AFTER PRESS-WORKING

Provided is a Corson alloy having improved bending workability and also having high dimensional accuracy after press-working. A copper alloy strip which is a rolling material, the rolling material containing from 0 to 5.0% by mass of Ni or from 0 to 2.5% by mass of Co, the total amount of Ni+Co being from 0.2 to 5% by mass; from 0.2 to 1.5% by mass of Si, the balance being copper and unavoidable impurities, wherein the rolling material satisfies the relationship: A/A≤1.000, in which Arepresents a projected area of an indentation remaining after carrying out a Vickers hardness test by maintaining a square pyramidal indenter for 10 seconds while applying a test force with a load of 1 kg to a surface of a base material and releasing the test force; and A represents an area connecting vertices of the indenter, and wherein the rolling material satisfies the relationship: 0.1≤I/I<1.0, in which Irepresents an X-ray diffraction intensity from a (200) plane on the surface, and Irepresents an X-ray diffraction intensity from a (200) plane of a pure copper powder standard sample. 1. A copper alloy strip which is a rolling material , the rolling material containing from 0 to 5.0% by mass of Ni or from 0 to 2.5% by mass of Co , the total amount of Ni+Co being from 0.2 to 5% by mass; from 0.2 to 1.5% by mass of Si , the balance being copper and unavoidable impurities ,{'sup': 0', '0, 'wherein the rolling material satisfies the relationship: A/A≤1.000, in which Arepresents a projected area of an indentation remaining after carrying out a Vickers hardness test by maintaining a square pyramidal indenter for 10 seconds while applying a test force with a load of 1 kg to a surface of a base material and releasing the test force; and A represents an area connecting vertices of the indenter, and'}{'sub': (200)', '0(200)', '(200)', '0(200), 'wherein the rolling material satisfies the relationship: 0.1≤I/I<1.0, in which Irepresents an X-ray diffraction intensity from a (200) plane on the ...

MAGNESIUM ALLOY AND METHOD FOR MANUFACTURING THE SAME

A magnesium alloy of the present invention has a structure, comprising: 0.5-2.0 wt % of Zn; 0.3-0.8 wt % of Ca; at least 0.2 wt % of Zr; and the remainder comprising Mg and unavoidable impurities, wherein a nanometer-sized precipitate comprising Mg, Ca and Zn dispersed on the (0001) plane of a magnesium matrix, thereby achieving both formability and strength in a range of temperatures including room temperature. 1. A magnesium alloy , comprising:0.5-2.0 wt % of Zn;0.3-0.8 wt % of Ca;at least 0.2 wt % of Zr; andthe remainder comprising Mg and unavoidable impurities,whereina precipitate comprising Mg, Ca and Zn is dispersed on the (0001) plane of a magnesium matrix.2. The magnesium alloy as set forth in claim 1 , further containing 0.1-2.0 wt % of Gd.3. The magnesium alloy as set forth in claim 1 , wherein the average grain size of the magnesium matrix is 5 μm to 20 μm.4. The magnesium alloy as set forth in claim 1 , wherein the normalized basal texture intensity of the (0002) pole on a normalized in the central part of plate thickness on a RD-TD face measured by the X-ray diffraction is less than 4.0 mrd.5. The magnesium alloy as set forth in claim 1 , wherein an Index Erichsen value at room temperature is 7.0 mm or higher.6. The magnesium alloy as set forth in claim 1 , wherein the 0.2% proof strength of a solution treated sample is 120 MPa or higher.7. The magnesium alloy as set forth in claim 1 , wherein the 0.2% proof strength of an aging treated material is 180 MPa or higher.8. A method for manufacturing the magnesium alloy comprising:process 1 of melting Mg, Zn, Ca and Zr to obtain a cast ingot;process 2 of carrying out a homogenization treatment on the cast ingot to obtain a homogenized ingot;process 3 of carrying out hot working or warm working on the homogenized ingot to obtain a material;process 4 of carrying out a solution treatment on the material to obtain a solution treated sample; andprocess 5 of carrying out an aging treatment on the solution treated ...

HIGH STRENGTH MUNITIONS STRUCTURES WITH INHERENT CHEMICAL ENERGY

A process for producing a munitions structure includes combining two or more transition metals including one or more of Zr, Hf, Ti, Ta, or Nb, and one or more other elements as alloying additions. The process further includes heating and fusing together the two or more transition metals and the one or more alloying additions to form a homogenous molten alloy. The homogenous molten alloy is cooled in a metallic mold to form a solid object with a desired shape for the munitions structure. 111-. (canceled)12. A process for producing a munitions structure , the process comprising: two or more transition metals including one or more of Zr, Hf, Ti, Ta, or Nb, and', 'one or more other elements as alloying additions;, 'combiningheating and fusing together the two or more transition metals and the one or more alloying additions to form a homogenous molten alloy; andcooling the homogenous molten alloy in a metallic mold to form a solid object with a desired shape for the munitions structure, {'br': None, 'sub': a', 'b', 'c', 'd', 'e', 'f, 'ZrHf(Ta,Nb,Ti)Cu(Ni,Fe,Co)Al'}, 'wherein the homogenous molten alloy has a formulasuch that a ranges from 40 to 60, b ranges from 0 to 14, c ranges from 2 to 5, d ranges from 10 to 35, e ranges from 5 to 20, and f ranges from 7 to 12.13. The process of claim 12 , further comprising bringing the homogeneous molten alloy in contact with one or more reinforcement materials.14. The process of claim 12 , wherein the cooling includes cooling the homogenous molten alloy at a rate of 500 K/sec or less.15. The process of claim 12 , wherein the cooling includes cooling the homogenous molten alloy to form the solid object with at least 70% amorphous phase by volume.16. The process of claim 12 , further comprising bringing the homogeneous molten alloy in contact with one or more of: refractory metals claim 12 , ceramics claim 12 , or a combination of refractory metals and ceramics.17. The process of claim 12 , further comprising bringing the ...

Two stage melting and casting system and method

A system for two stage casting of a metal alloy is disclosed that dispenses multiple feedstock metals into an arc melting crucible via a pressurized inert gas or metal vapor chamber to lower the volatilization rate of metals in an arc melting crucible at a rate proportional to the composition of the final desired alloy. The melt from the melting crucible enters a second stage cold wall crucible through a passage, where the melt cools and solidifies. A casting piston is used to slowly and progressively withdraw the solidified alloy from the cold wall crucible as it cools.

PLASTIC DEFORMATION MAGNESIUM ALLOY HAVING EXCELLENT THERMAL CONDUCTIVITY AND FLAME RETARDANCY, AND PREPARATION METHOD

Disclosed is a magnesium alloy that has high thermal conductivity and flame retardancy and facilitates plastic working, wherein magnesium is added with 0.5 to 5 wt % of zinc (Zn) and 0.3 to 2.0 wt % of at least one of yttrium (Y) and mischmetal, with, as necessary, 1.0 wt % or less of at least one selected from among calcium (Ca), silicon (Si), manganese (Mn) and tin (Sn), the total amount of alloy elements being 2.5 to 6 wt %. A method of manufacturing the same is also provided, including preparing a magnesium-zinc alloy melt in a melting furnace, adding high-melting-point elements in the form of a master alloy and melting them, and performing mechanical stirring during cooling of a cast material in a continuous casting mold containing the magnesium alloy melt, thus producing a magnesium alloy cast material having low segregation, after which a chill is removed from the cast material or diffusion annealing is performed, followed by molding through a tempering process such as rolling, extrusion or forging. This magnesium alloy is improved in ductility by the action of alloy elements for inhibiting the formation of lamella precipitates due to a low-melting-point eutectic phase in a magnesium matrix structure, can be extruded even at a pressure of 1,000 kgf/cmor less due to the increased plasticity thereof, and can exhibit thermal conductivity of 100 W/m·K or more and flame retardancy satisfying the requirements for aircraft materials and is thus suitable for use in fields requiring fire safety, thereby realizing wide application thereof as a heat sink or a structural material for portable appliances, vehicles and aircraft components and contributing to weight reduction. 1. A magnesium alloy having high thermal conductivity and flame retardancy and facilitating plastic working , which is configured such that magnesium is added with 0.5 to 5 wt % of zinc and 0.3 to 2.0 wt % of at least one of yttrium and mischmetal as high-melting-point oxide-film-forming elements , ...

EMBOLIZATION COIL AND METHOD FOR PRODUCING EMBOLIZATION COIL

The present invention is an embolization coil having an optimum morphological stability. The embolization coil includes a wire material made of an Au—Pt alloy. The wire material constituting the embolization coil has such a composition that a Pt concentration is 24 mass % or more and less than 34 mass %, with the balance being Au. The wire material has such a material structure that a Pt-rich phase of an Au—Pt alloy having a Pt concentration of 1.2 to 3.8 times a Pt concentration of an α phase is distributed in an α phase matrix. The wire material has a bulk susceptibility of −13 ppm or more and −5 ppm or less. In a material structure of a transverse cross-section of the wire material, an average value of two or more average crystal particle diameters measured by a linear intercept method is 0.20 μm or more and 0.35 μm or less. 1. An embolization coil comprising a wire material made of an Au—Pt alloy ,wherein the wire material constituting the embolization coil has such a composition that a Pt concentration is 24 mass % or more and less than 34 mass %, with the balance being Au, and the wire material has such a material structure that a Pt-rich phase of an Au—Pt alloy having a Pt concentration of 1.2 to 3.8 times a Pt concentration of an α phase is distributed in an α phase matrix,wherein the wire material has a bulk susceptibility of −13 ppm or more and −5 ppm or less, andwherein in a material structure of a transverse cross-section of the wire material, an average value of two or more average crystal particle diameters measured by a linear intercept method is 0.20 μm or more and 0.35 μm or less.2. The embolization coil according to claim 1 , wherein in the material structure of the transverse cross-section of the wire material claim 1 , a standard deviation of the two or more average crystal particle diameters measured by the linear intercept method is 0.025 or more and 0.085 or less.3. The embolization coil according to claim 1 , wherein the wire material has a ...

NICKEL-BASED SUPERALLOY AND PARTS MADE FROM SAID SUPERALLOY

A nickel superalloy has the following composition, the concentrations of the different elements being expressed as wt-%: Formula (I), the remainder consisting of nickel and impurities resulting from the production of the superalloy. In addition, the composition satisfies the following equation, wherein the concentrations of the different elements are expressed as atomic percent: Formula (II). 1. A process for the preparation of a part comprising manufacturing a part from a nickel-based superalloy of the following composition , the contents of the various elements being expressed as weight percentages:1.3%≤Al≤2.8%;trace amounts≤Co≤11%;14%≤Cr≤17%;trace amounts≤Fe≤12%;2%≤Mo≤5%;0.5%≤Nb+Ta≤2.5%;2.5%≤Ti≤4.5%;1%≤W≤4%;0.0030%≤B≤0.030%;trace amounts≤C≤0.1%;0.01%≤Zr≤0.06%;the remainder consisting of nickel and impurities resulting from the production, [{'br': None, '8 Al at %+Ti at %+Nb at %+Ta at %≤11'}, {'br': None, '0.7≤(Ti at %+Nb at %+Ta at %)/Al % at %≤1.3'}], 'and such that the composition satisfies the following equations wherein the contents are expressed as atomic percentages2. The process according to claim 1 , wherein the composition of the nickel-based superalloy satisfies the following equation wherein the contents are expressed as atomic percentages:{'br': None, '1≤(Ti at %+Nb at %+Ta at %)/Al at %≤1.3'}3. The process according to claim 1 , wherein the nickel-based superalloy contains between 3.6 and 12% of Fe claim 1 , as weight percentages.4. The process according to claim 1 , wherein the composition of the nickel-based superalloy is claim 1 , expressed as weight percentages:1.3≤Al≤2.8%;7%≤Co≤11%;14%≤Cr≤17%;3.6%≤Fe≤9%;2%≤Mo≤5%;0.5%≤Nb+Ta≤2.5%;2.5%≤Ti≤4.5%;1%≤W≤4%;0.0030%≤B≤0.030%;trace amounts≤C≤0.1%;0.01%≤Zr≤0.06%; [{'br': None, '8≤Al at %+Ti at %+Nb at %+Ta at %≤11'}, {'br': None, '0.7≤(Ti at %+Nb at %+Ta at %)/Al at %≤1.3'}], 'and said composition satisfies the following equations wherein the contents are expressed as atomic percentagesthe remainder ...

CORRODIBLE DOWNHOLE ARTICLE

This invention relates to a corrodible downhole article comprising an aluminium alloy, wherein the aluminium alloy comprises (a) 3-15 wt % Mg, (b) 0.01-5 wt % In, (c) 0-0.25 wt % Ga, and (d) at least 60 wt % Al. The invention also relates to a method of making a corrodible downhole article comprising an aluminium alloy, the method comprising the steps of: (a) melting aluminium, Mg, In, optionally Ga, and Ni, to form a molten aluminium alloy comprising 3-15 wt % Mg, 0.01-5 wt % In, 0-0.25 wt % Ga, and at least 60 wt % Al, (b) mixing the resulting molten aluminium alloy, (c) casting the aluminium alloy or producing an aluminium alloy powder, and (d) forming the aluminium alloy into a corrodible downhole article. In addition, the invention relates to a method of hydraulic fracturing comprising the use of the corrodible downhole article. 1. A corrodible downhole article comprising an aluminium alloy , wherein the aluminium alloy comprises (a) 3-15 wt % Mg , (b) 0.01-5 wt % In , (c) 0-0.25 wt % Ga , and (d) at least 60 wt % Al.2. The corrodible downhole article of claim 1 , wherein the aluminium alloy comprises 5-11 wt % Mg.3. The corrodible downhole article of claim 1 , wherein the aluminium alloy comprises 0.1-4 wt % In.4. The corrodible downhole article of claim 1 , wherein the aluminium alloy comprises 0-2.5 wt % Fe.5. The corrodible downhole article of claim 4 , wherein the aluminium alloy comprises 0.1-1.50 wt % Fe.6. The corrodible downhole article of claim 1 , wherein the aluminium alloy comprises 0-10 wt % Ni.7. The corrodible downhole article of claim 6 , wherein the aluminium alloy comprises 0.1-6 wt % Ni.8. The corrodible downhole article of claim 1 , wherein the aluminium alloy comprises 0.3-15 wt % Zn.9. The corrodible downhole article of claim 8 , wherein the aluminium alloy comprises 1-13 wt % Zn.10. The corrodible downhole article of claim 1 , wherein the aluminium alloy comprises (a) 5-11 wt % Mg claim 1 , (b) 0.3-1.2 wt % In claim 1 , (c) 0-0.25 wt % ...

ALLOY COMPOSITION, METHOD FOR PRODUCING ALLOY COMPOSITION, AND DIE

An object is to provide an alloy composition that has a sufficient melting point for casting of an aluminum alloy, also has high hardness, and can suppress an occurrence of galling. The alloy composition of the present invention includes: a Mo—Cr-based dendritic structure ; and a Ni—Al-based interdendritic structure that fills a periphery of the Mo—Cr-based dendritic structure . The alloy composition of the present invention can adopt a chemical composition I in which when Mo+Cr+Ni+Al=100 at. % holds, Ni+Al=15 to 50 at. % and Mo+Cr=50 to 85 at. % hold; or a chemical composition II in which Ni+Al=40 to 70 at. % and Mo+Cr=30 to 60 at. % hold. 1. An alloy composition comprising:a Mo—Cr-based dendritic structure; anda Ni—Al-based interdendritic structure that fills a periphery of the Mo—Cr-based dendritic structure, whereinwhen Mo+Cr+Ni+Al=100 at. % holds,Ni+Al=15 to 50 at. %, and Mo+Cr=50 to 85 at. % hold.2. An alloy composition comprising:a Mo—Cr-based dendritic structure; anda Ni—Al-based interdendritic structure that fills a periphery of the Mo—Cr-based dendritic structure, whereinwhen Mo+Cr+Ni+Al=100 at. % holds,Ni+Al=40 to 70 at. %, and Mo+Cr=30 to 60 at. % hold.3. The alloy composition according to claim 1 , whereina percentage of an area of the dendritic structure, which the Mo—Cr-based dendritic structure occupies in the whole of the structures, is 50 to 85%.4. The alloy composition according to claim 2 , whereina percentage of an area of the dendritic structure, which the Mo—Cr-based dendritic structure occupies in the whole of the structures, is 50 to 65%.5. The alloy composition according to claim 1 , wherein Ni+Al=40 to 50 at. % claim 1 , and Mo+Cr=50 to 60 at. % hold.6. The alloy composition according to claim 1 , whereina region where a Cr/Mo ratio is different exists in the Mo—Cr-based dendritic structure.7. The alloy composition according to claim 6 , whereinthe Cr/Mo ratio in the Mo—Cr-based dendritic structure is high in an edge portion of a dendrite ...

MNBI-BASED MAGNETIC SUBSTANCE, PREPARATION METHOD THEREOF, MNBI-BASED SINTERED MAGNET AND PREPARATION METHOD THEREOF

The method of preparing an MnBi-based magnetic substance according to the present invention includes: (a) preparing a mixed melt by simultaneously melting a manganese-based material and a bismuth-based material; (b) forming a non-magnetic MnBi-based ribbon by cooling the mixed melt; and (c) converting the non-magnetic MnBi-based ribbon into a magnetic MnBi-based ribbon by performing a heat treatment. The method for preparing an MnBi-based sintered magnet includes: (a) preparing a magnetic powder by pulverizing the MnBi-based magnetic substance; (b) molding the magnetic powder in a state where a magnetic field is applied; and (c) sintering the molded magnetic powder. 1. A method of preparing an MnBi-based magnetic substance , the method comprising:(a) simultaneously melting a manganese-based material and a bismuth-based material to prepare a mixed melt;(b) cooling the mixed melt to form a non-magnetic MnBi-based ribbon; and(c) performing a heat treatment to convert the non-magnetic MnBi-based ribbon into a magnetic MnBi-based ribbon.2. The method of claim 1 , wherein the melting in step (a) is performed at a temperature of 1 claim 1 ,200° C. or higher.3. The method of claim 1 , wherein the melting in step (a) is a rapid heating process selected from the group consisting of an induction heating process claim 1 , an arc-melting process claim 1 , a mechanochemical process claim 1 , a sintering process claim 1 , and a combination thereof.4. The method of claim 1 , wherein cooling in step (b) is a rapid cooling process selected from the group consisting of a rapid solidification process (RSP) claim 1 , an atomizer process claim 1 , and a combination thereof.5. The method of claim 4 , wherein the rapid solidification process has a wheel speed of 55 to 75 m/s.6. The method of claim 1 , wherein the heat treatment in step (c) is performed at a temperature of 280 to 340° C. and under a pressure of 1 to 5 mPa.7. The method of claim 1 , wherein the heat treatment in step (c) is ...

UNISOURCE HIGH-STRENGTH ULTRASOUND-ASSISTED METHOD FOR CASTING LARGE-SPECIFICATION 2XXX SERIES ALUMINIUM ALLOY ROUND INGOT

In the technical field of metal melting, a unisource high-strength ultrasound-assisted method for casting large-specification 2XXX series aluminum alloy round ingots applies in an ingot guiding process, a unisource high-strength ultrasonic vibration system to the center of a hot-top crystallizer, ultrasound directly acts on the center position of a crystallizer, and enough ultrasonic field energy is provided for a melt by controlling the power of the ultrasonic vibration system, so that an aluminum alloy solidification process is implemented under the effect of ultrasound, homogenization of microstructures and components of ingots is promoted, and the existing problems that microstructures are thick and crystal phases are enriched due to slow cooling of centers of large-specification round ingots are effectively solved, meanwhile, the problems of great operation difficulty and heavy workload during multisource ultrasonic coupling are avoided. 1. A unisource high-strength ultrasound-assisted method for casting large-specification 2XXX series aluminum alloy round ingots , comprising the following steps: enabling melt of 2XXX series aluminum alloy to flow into a hot-top crystallizer,', 'after ingot guiding is started, applying a set of ultrasonic vibration system to the center of a crystallizer of the hot-top crystallizer, and, 'performing solidification and ingot guiding by'}when casting is about to end, removing the ultrasonic vibration system, to obtain a large-specification 2XXX series aluminum alloy round ingot;wherein power of the ultrasonic vibration system being is 2˜4 kw; andwherein diameter of the large-specification 2XXX series aluminum alloy round ingot is ≥500 mm.2. The method according to claim 1 , wherein the diameter of the large-specification 2XXX series aluminum alloy round ingot is 500-1380 mm.3. The method according to claim 1 , wherein the ultrasonic vibration system comprises an ultrasonic transducer claim 1 , an amplitude transformer and a ...

High Strength Aluminum Fin Stock for Heat Exchanger

The present invention provides an aluminum alloy fin stock material with higher strength, and improved sag resistance for use in heat exchangers, such as automotive heat exchangers. The aluminum alloy fin stock material is produced from an aluminum alloy comprising about 0.8-1.4 wt % Si, 0.4-0.8 wt % Fe, 0.05-0.4 wt % Cu, 1.2-1.7 wt % Mn and 1.20-2.3 wt % Zn, with the remainder as Al. The aluminum alloy fin stock material is made by a process comprising direct chill casting the aluminum alloy into an ingot, preheating the ingot, hot rolling the preheated ingot, cold rolling the ingot and inter-annealing at a temperature of 275-400° C. After inter-annealing, the aluminum alloy fin stock material is a cold rolled in a final cold rolling step to achieve % cold work (% CW) of 20-35%. 1. An aluminum alloy comprising about 0.8-1.4 wt % Si , 0.4-0.8 wt % Fe , 0.05-0.4 wt % Cu , 1.2-1.7 wt % Mn and 1.20-2.3 wt % Zn , with the remainder as Al.2. The aluminum alloy of claim 1 , comprising about 0.9-1.3 wt % Si claim 1 , 0.45-0.75 wt % Fe claim 1 , 0.10-0.3 wt % Cu claim 1 , 1.3-1.7 wt % Mn and 1.30-2.2 wt % Zn claim 1 , with the remainder as Al.3. The aluminum alloy of claim 1 , comprising about 0.9-1.2 wt % Si claim 1 , 0.5-0.75 wt % Fe claim 1 , 0.15-0.3 wt % Cu claim 1 , 1.4-1.6 wt % Mn and 1.4-2.1 wt % Zn claim 1 , with the remainder as Al.4. The aluminum alloy of claim 1 , comprising about 0.9-1.1 wt % Si claim 1 , 0.5-0.6 wt % Fe claim 1 , 0.15-0.25 wt % Cu claim 1 , 1.5-1.6 wt % Mn and 1.5-1.6 wt % Zn claim 1 , with the remainder as Al.5. The aluminum alloy of claim 1 , comprising about 0.90-1.0 wt % Si claim 1 , 0.55 wt % Fe claim 1 , 0.15-0.20 wt % Cu claim 1 , 1.5 wt % Mn and 1.5 wt % Zn claim 1 , and with the remainder as Al.6. The aluminum alloy of claim 5 , comprising about 0.95 wt % Si and 0.15 wt % Cu.7. The aluminum alloy of claim 1 , comprising about 1.0-1.2 wt % Si claim 1 , 0.5-0.6 wt % Fe claim 1 , 0.2-0.3 wt % Cu claim 1 , 1.4-1.55 wt % Mn and 1.9-2.1 wt ...

ALUMINUM-ZIRCONIUM-TITANIUM-CARBON GRAIN REFINER FOR MAGNESIUM AND MAGNESIUM ALLOYS AND METHOD FOR PRODUCING THE SAME

The present invention pertains to the field of metal alloy, and discloses an aluminum-zirconium-titanium-carbon grain refiner for magnesium and magnesium alloys, having a chemical composition of: 0.01%˜10% Zr, 0.01%˜10% Ti, 0.01%˜0.3% C, and Al in balance, based on weight percentage. Also, the present invention discloses the method for preparing the grain refiner. The grain refiner according to the present invention is an Al—Zr—Ti—C intermediate alloy having great nucleation ability and in turn excellent grain refining performance for magnesium and magnesium alloys, and is industrially applicable in the casting and rolling of magnesium and magnesium alloy profiles, enabling the wide use of magnesium in industries. 1. A method for producing an aluminum-zirconium-titanium-carbon grain refiner for magnesium and magnesium alloys , characterized in that the aluminum-zirconium-titanium-carbon grain refiner has a chemical composition of: 0.01%˜10% Zr , 0.01%˜10% Ti , 0.01%˜0.3% C , and Al in balance , based on weight percentage , comprising the steps of:a. melting commercially pure aluminum, heating to a temperature of 1000-1300° C., and adding zirconium scarp, titanium scarp and graphite powder thereto to be dissolved therein, andb. keeping the temperature under agitation for 15-20 minutes, and performing casting molding.2. A method for producing an aluminum-zirconium-titanium-carbon grain refiner for magnesium and magnesium alloys , wherein the aluminum-zirconium-titanium-carbon grain refiner has a chemical composition of: 0.1%˜10% Zr , 0.1%˜10% Ti , 0.01%˜0.3% C , and Al in balance , based on weight percentage , comprising the steps of:a. melting commercially pure aluminum, heating to a temperature of 1000-1300° C., and adding zirconium scarp, titanium scarp and graphite powder thereto to be dissolved therein, andb. keeping the temperature under agitation for 15-20 minutes, and performing casting molding.3. The method for producing an aluminum-zirconium-titanium-carbon ...

STEEL, PRODUCT MADE OF SAID STEEL, AND MANUFACTURING METHOD THEREOF

Disclosed is a steel composition including specified ranges of Ni; Mo; Co; Mo+Co+Si+Mn+Cu+W+V+Nb+Zr+Ta+Cr+C; Co+Mo; Ni+Co+Mo; and traces of Al; Ti; N; Si; Mn; C; S; P; B; H; O; Cr; Cu; W; Zr; Ca; Mg; Nb; V; and Ta in specified ranges; the remainder being iron and impurities. The inclusion population, as observed by image analysis over a polished surface measuring 650 mmif hot-formed or hot-rolled; and measuring 800 mmif cold-rolled, does not contain non-metallic inclusions of diameter >10 μm, and, in the case of a hot-rolled sheet, does not contain more than four non-metallic inclusions of diameter 5-10 μm over 100 mm, the observation being performed by image analysis over a polished surface measuring 650 mm. 1. Steel , characterised in that its composition , in percentages by weight is as follows:10.0%≤Ni≤24.5%, preferably 12.0%≤Ni≤24.5%;1.0%≤Mo≤12.0%, preferably 2.5%≤Mo≤9.0%;1.0%≤Co≤25.0%;20.0%≤Mo+Co+Si+Mn+Cu+W+V+Nb+Zr+Ta+Cr+C≤29.0%, preferably 22.0%≤Mo+Co+Si+Mn+Cu+W+V+Nb+Zr+Ta+Cr+C≤29.0%, more preferably 22.5%≤Mo+Co+Si+Mn+Cu+W+V+Nb+Zr+Ta+Cr+C≤29.0%;Co+Mo≥20.0%; preferably Co+Mo≥21.0%; more preferably Co+Mo≥22.0%;Ni+Co+Mo≥29%; preferably Ni+Co+Mo≥41.0%;traces ≤Al≤4.0%, preferably 0.01%≤Al≤1.0%;traces ≤Ti≤0.1%;traces ≤N≤0.0050%;traces ≤Si≤2.0%; preferably 0.04%≤Si≤2.0%;traces ≤Mn≤4.0%;traces ≤C≤0.03%;traces ≤S≤0.0020%, preferably traces ≤S≤0.0010%;traces ≤P≤0.005%;traces ≤B≤0.01%;traces ≤H≤0.0005%;traces ≤O≤0.0025%;traces ≤Cr≤5.0%;traces ≤Cu≤2.0%;traces ≤W≤4.0%;traces ≤Zr≤4.0%;traces ≤Ca≤0.1%;traces ≤Mg≤0.1%;traces ≤Nb≤4.0%;traces ≤V≤4.0%;traces ≤Ta≤4.0%;with the remainder being iron and impurities resulting from the smelting and manufacturing process;{'sup': 2', '2', '2', '2, 'and in that the inclusion population, as observed by means of image analysis over a polished surface measuring 650 mmif the steel is in the form of a component part/work piece that is hot-formed or a hot-rolled sheet; and measuring 800 mmif the steel is in the form of a cold-rolled sheet, ...

HIGH ENTROPY ALLOY STRUCTURE AND A METHOD OF PREPARING THE SAME

A method for preparing a high entropy alloy (HEA) structure includes the steps of: preparing an alloy by arc melting raw materials comprising five or more elements; drop casting the melted alloy into a cooled mold to form a bulk alloy; applying an external force against the bulk alloy to reshape the bulk alloy; and heat-treating the reshaped bulk alloy, wherein the bulk alloy is reshaped and/or heat-treated for manipulating the distribution of the microstructure therein. The present invention also relates to a high entropy alloy structure prepared by the method. 1. A method of preparing a high entropy alloy structure comprising the steps of:A. preparing an alloy by arc melting raw materials comprising five or more elements;B. drop casting the melted alloy into a cooled mold to form a bulk alloy;C. applying an external force against the bulk alloy to reshape the bulk alloy; andD. heat-treating the reshaped bulk alloy;wherein the bulk alloy is reshaped and/or heat-treated for manipulating the distribution of the microstructure therein.2. The method according to claim 1 , wherein step C includes step Cl of rolling the bulk alloy along a first direction to reduce the thickness of the bulk alloy.3. The method according to claim 2 , wherein step Cl of rolling is carried out along a longitudinal direction of the bulk alloy.4. The method according to claim 2 , wherein the thickness of the rolled bulk alloy is reduced by 70%.5. The method according to claim 1 , wherein the crystals in the microstructure are deformed during the heat treatment in step D to form a plurality of twins.6. The method according to claim 1 , wherein step D includes step D1 of heating the bulk alloy to facilitate the movement of the microstructures.7. The method according to claim 1 , wherein each of the elements is provided in an atomic percentage of 10% to 30%.8. The method according to claim 1 , wherein the elements are Cobalt claim 1 , Nickel claim 1 , Chromium claim 1 , Iron and Aluminum.9. The ...