СВАРКА ИЗДЕЛИЙ ИЗ СУПЕРСПЛАВОВ

Изобретение относится к области сварки, в частности к способу сварки турдносвариваемых изделий из суперсплавов, и может найти применение в различных отраслях машиностроения. Всю зону сварного шва и область, примыкающую к этой зоне, предварительно нагревают до температуры пластичности, которая выше температуры старения и ниже начальной температуры плавления для суперсплава. Поддерживают эту температуру во время сварки и твердения сварного шва. Увеличивают температуру сварного изделия до температуры снятия механических напряжений. Охлаждают сварное изделие до температуры ниже диапазона дисперсного твердения первичной гамма-фазы со скоростью, эффективной для уменьшения выделения первичной гамма-фазы. В результате получают сварное изделие без трещин как в сварном шве, так и в основном сплаве. 11 з.п. ф-лы, 3 ил., 1 табл.

СОТОВАЯ СТРУКТУРА, ИСТИРАЕМОЕ УПЛОТНЕНИЕ И СПОСОБЕГО ОБРАЗОВАНИЯ

Истираемое уплотнение предназначено для турбин. Оно содержит новую сотовую ячеистую структуру, изготовленную из металлической фольги или листа, обладающую хорошей технологичностью, облегчающую процесс пайки и имеющую высокую стойкость к окислению и высокую конструкционную целостность после припайки к металлической опорной конструкции. Фольга или листы из сплава MCrAlY (где М - Ni, Fe, Co или их комбинации) особенно хорошо подходят для изготовления такой ячеистой структуры. Такое выполнение истираемого уплотнения позволит повысить его высокую долговременную размерную стабильность при высокой температуре. 3 н. и 10 з.п. ф-лы, 4 ил., 3 табл.

СПОСОБ ИЗБИРАТЕЛЬНОГО УДАЛЕНИЯ СОСТАВОВ ДЛЯ ПАЙКИ ТВЕРДЫМ ПРИПОЕМ ИЗ СОЕДИНЕННЫХ УЗЛОВ (ВАРИАНТЫ)

Изобретение относится к способу избирательного удаления составов для пайки твердым или среднеплавким припоем из базовых узлов (узлов основания), и в частности, к способу избирательного удаления никелевого сплава для твердой пайки с деталей из сплавов на основе никеля. Способ включает погружение в электролит узла, содержащего детали из сплава на основе никеля, которые соединены посредством никелевого сплава для твердой пайки, затем прикладывают к указанному электролиту потенциал такой величины, при котором оставляют указанные детали из сплава на основе никеля электрохимически пассивными и растворяют указанный никелевый сплав для твердой пайки с удалением его с указанных деталей. Технический результат: снижение загрязнения окружающей среды и материальных затрат. 3 н. и 7 з.п. ф-лы, 8 ил., 2 табл.

ГАММА/ГАММА' -СУПЕРСПЛАВ НА ОСНОВЕ НИКЕЛЯ С МНОГОЧИСЛЕННЫМИ РЕАКЦИОННО-АКТИВНЫМИ ЭЛЕМЕНТАМИ И ПРИМЕНЕНИЕ УКАЗАННОГО СУПЕРСПЛАВА В СЛОЖНЫХ СИСТЕМАХ МАТЕРИАЛОВ

Изобретение относится к металлургии, а именно к γ/γ'-суперсплавам на основе никеля. Сплав содержит, вес.%: вплоть до 20 суммы Со и Fe, между 17 и 21 Сr, между 0,5 и 3 суммы Мо и W, не более 2 Мо, между 4,8 и 6 Аl, между 1,5 и 5 Та, между 0,01 и 0,2 суммы С и В, между 0,01 и 0,2 Zr, между 0,05 и 1,5 Hf, между 0,05 и 1,0 Si, и между 0,01 и 0,5 суммы по меньшей мере двух элементов из актиноидов и редкоземельных металлов, таких как Sc, Y и лантаноиды, причем содержание каждого элемента составляет не более 0,3. Сплав применяют в высокотемпературных компонентах, представляющих собой рабочие лопатки, направляющие лопатки, тепловые экраны, уплотнения или детали камеры сгорания в газовых турбинах, а также в качестве присадочного сплава для ремонтной сварки и/или плакирования таких высокотемпературных компонентов. Сплав обладает высокими показателями устойчивости к окислению, стойкости к высокотемпературной коррозии, прочности и пластичности, свариваемости. 6 н. и 15 з.п. ф-лы.

СВАРОЧНЫЙ ЭЛЕКТРОД

Изобретение может быть использовано для сварки и ремонта качественных упрочненных суперсплавов, которые, в частности, применяются для изготовления компонентов газовой турбины. Электрод (10)содержит оболочку (14), образованную из пластичного материала, наружное покрытие (16), включающее материал флюса, и сердечник (12), включающий по меньшей мере один из материала флюса и легирующего материала. Наружное покрытие выполнено в виде множества дискретных сегментов. Концы сегментов сформированы для взаимодействия с соседними концами с обеспечением возможности сгибания электрода. Наружное покрытие содержит гибкий целлюлозный связующий материал, включающий волоконную целлюлозу. Волокна проходят внутрь от поверхности электрода с обеспечением электрической неразрывной цепи между наружной поверхностью и сердечником. Оболочка содержит элементы суперсплава, а легирующий материал сердечника дополняет оболочку для получения желаемого материала суперсплава при плавлении электрода. Сгибаемый электрод обеспечивает ...

ЛАЗЕРНОЕ ПЛАКИРОВАНИЕ НА ПОДЛОЖКАХ С НИЗКОЙ ЖАРОСТОЙКОСТЬЮ

... 1. Способ нанесения тугоплавкого материала на подложку, причем упомянутая подложка имеет температуру плавления ниже температуры плавления тугоплавкого материала, включающий в себя: ! (а) перемещение лазерного луча, генерируемого лазером, по поверхности упомянутой подложки, причем упомянутый лазерный луч состоит из волн длиной от примерно 300 до примерно 10600 нм; ! (b) подачу порошка металла, сплава или композита металлического сплава к поверхности упомянутой подложки; и ! (с) генерирование в лазере достаточной мощности для поверхностного нагрева упомянутой подложки и для осуществления соединения сплавлением порошка металла, сплава или композита металлического сплава и поверхности упомянутой подложки. ! 2. Способ по п.1, в котором упомянутый лазерный луч состоит из волн длиной примерно 1060 нм или менее. ! 3. Способ по п.1, в котором упомянутый лазерный луч состоит из волн длиной от примерно 700 до примерно 1060 нм. ! 4. Способ по п.1, в котором упомянутый лазер создает поверхностный нагрев ...

ПЛАСТИЧНЫЙ БОРСОДЕРЖАЩИЙ СВАРОЧНЫЙ МАТЕРИАЛ НА ОСНОВЕ НИКЕЛЯ

Hochbelastbare, beschichtete Bauteile aus einem Werkstoff, der aus der intermetallischen Phase Titan-Aluminid besteht

Hochchromhaltige Nickellegierung mit hervorragendem Widerstand gegen Verschleiss und Korrosion durch Blei sowie Motorventile

Verfahren zum Schweissen von Superlegierungen auf der Basis von Nickel.

Werkstoff aus Superlegierung mit verbesserter Schweissbarkeit

Austenitische Ni-Cr-Mo-Fe-Legierung

The invention relates to an austenitic alloy which can be hot and cold-formed for use in aqueous, oxidising media which contain chloride. The alloy consists of the following alloy elements (in % by mass): Cr 18.0 to 21.0 Fe 12.0 to 16.0 Mo 9.0 to 13.0 Co max. 1.0 W 0.5 to 2.5 C max. 0.025 N 0.05 to 0.25 Mn max. 0.50 Si max. 0.50 Ti max. 0.02 Nb 0.05 to 0.5 Cu max. 0.3 P max. 0.010 Al 0.05 to 0.5 S max. 0.005 Mg 0.005 to 0.030 Ca 0.001 to 0.01 V max. 0.5 B max. 0.005 Zr 0.001 to 0.030 The residue consists of nickel and includes impurities resulting from production.

CORROSION RESISTANT NI-CR-SI-CU ALLOYS

Turbine component and a process of fabricating a turbine component

INTERLAYER FOIL FOR DIFFUSION BONDING

... 1400905 Brazing UNITED AIRCRAFT CORP 14 Feb 1973 [20 March 1972] 7213/73 Heading B3R [Also in Division C7] An interlayer foil for diffusion-bonding has a thickness of 0À0015 to 0À15 mm. and comprises (based on the overall content of the foil) a Nibase alloy containing 5-35 wt per cent Cr and 1À5-3À5% B (Al, Ti, and C being absent from the alloy), the foil consisting of a ductile core and an outer layer in which the B content of the foil is concentrated, the outer layer comprising the reaction products of B with the core alloy, both the outer layer and the core having a higher Mpt. than a homogeneous alloy having the same overall composition as the foil. The foil is used as an interlayer to join together by diffusion-bonding, involving melting of the foil, Ni-based superalloys, e.g. 10% Cr, 15% Co, 4À5% Ti, 5À5% Al, 3% Mo, 0À17% C, 1% V, 0À015% B, 0À06% Zr and balance Ni or 9% Cr, 10% Co, 2% Ti, 5% Al, 7À8% Mo, 12À5% W, 0À15% C, 1% Nb, 0À015% B, 0À05% Zr and balance Ni or 15% Cr, 15% Co, ...

METHOD OF MANUFACTURING BRAZABLE SUPER ALLOYS

ALLOYS

... 1507564 Coated superalloy GENERAL ELECTRIC CO 28 April 1975 [17 June 1974] 17603/75 Heading C7A A composite article comprises a superalloy substrate coated with an alloy consisting of, by weight:- Cr 40-65% Si 5-12% the balance being Ni. The coating may be applied by "vacuum brazing" (i.e. application of a tape comprising powdered alloy in 5% of an organic binder, outgassing at 700-1000‹F, heating to about 2075‹F and cooling in argon) and may be 10 mil thick.

PROCEDURE FOR MANUFACTURING HEAT EXCHANGERS AND APTITUDE METALLIC COMPOSITIONS FOR SOLDERING

ALLOY FOR SOLDERING AND THEIR USE

ANTI-COKING, HEATPROOF ONES OF MULTI-LAYER METAL TUBES AND PROCEDURES FOR YOUR PRODUCTION

ALLOY, PREFERABLY FOR USE AS WELDING-ROD MATERIALS

KORROSIONSBESTAENDIGE NI-CR-SI-CU-LEGIERUNGEN

PROCEDURE FOR WELDING SUPERALLOYS ON THE BASIS OF NICKEL.

NICKEL BASIS ALLOY.

AUSTENITIC NI-CR-MO-FE-ALLOY

NICKEL BASIS ALLOY FOR ELECTRICAL WELDING OF NICKEL ALLOYS AND STEEL, FILLER ROD AND THEIR USE

SLIDING STORAGE.

HARTLOT

NICKEL CHROME MOLYBDENUM ALLOY

MATERIAL IN POWDER OR DRAHTFORM ON NICKEL BASIS FOR A COATING AS WELL AS PROCEDURE FOR IT

Stainless steel wire with flux core for welding zinc coated steel sheets

A stainless steel wire having a flux core for welding zinc-based alloy coated steel sheet having an outer metal sheath coating a core of flux wherein in total having in mass (%) as percentage to the total mass of the wire: C: 0.01- 0.05 %, Si: 0.1- 1.5 %, Mn: 0.5- 3.0 %, Ni: 7.0- 10.0 %, Cr: 26.0- 30.0 %, wherein an F value defined as a function of the above components ranges from 30 to 50, the flux further having a slag formation agent in mass (%) as percentage to the total mass of the wire: TiO : 0.6- 2.6 %, SiO : 1.8- 3.8 %, ZrO: 1.0- 3.5 %, and optionally AlO: 0.1- 1.0 %, wherein the slag formation agent in total is less than 10%, and the wire further containing Fe and residual impurities.

Diffusion bond mixture for healing single crystal alloys

WELDING ELECTRODE

Welding superalloy articles

AGE HARDENABLE NICKEL SUPERALLOY WELDING WIRES CONTAINING MANGANESE

Compound of metal foils comprising a soldering material

INTERLAYER FOIL FOR DIFFUSION BONDING

NICKEL BASED ALLOY

POWDERED NI-CR BASED MATERIAL FOR THERMAL SPRAYING

NICKEL-BASED HARD ALLOY

WEAR-RESISTANT NICKEL-BASE ALLOY

... of the Invention WEAR-RESISTANT NICKEL-BASE ALLOY Disclosed is a nickel-base alloy typically containing in weight percent, about 2.7 carbon, about 10.5 cobalt, about 27 chromium, about 23 iron, about 10 molybdenum plus tungsten, up to 2.5 maximum tungsten, and the balance nickel and incidental impurities. The alloy is especially suited for use as wear-resistant articles and may be produced in various forms, such as castings, metal powder, tube rod and/or wire and wrought articles. The alloy composition is particularly designed to conserve cobalt and tungsten and yet provide wear-resistant articles comparable to cobalt-base alloys with high tungsten contents.

ALLOY POWDER MIXTURE FOR TREATING ALLOYS

ALLOY POWDER MIXTURE FOR TREATING ALLOYS An improved mixture of alloy powders is provided for use in treating a preselected article alloy, for example, to repair or join multiple components of the article The mixture has at least three distinct groups of alloy powders which together define a mixture composition range, with each alloy powder of the groups characterized by a composition and melting range different from the others and from the article alloy. In a preferred form, the mixture composition range comprises, my weight, 15-30% Cr, 1.5-6% W, 0.4-4% Al, 1-11% Ti, 1-6% Ta, up to 1.5% B, up to 0.5% Si, up to 0.2% Zr, up to 3% Mo, up to 0.3% Hf, up to 6% Cb, up to 2% Re, with the balance selected from Co and Ni along with incidental impurities.

BRAZE ALLOY COMPOSITIONS

A nickel-based high-temperature braze alloy composition includes Cr, Hf, and B. Furthermore, a cobalt-based high-temperature braze alloy composition includes Cr, Hf, and B. The braze alloys can be used, for example, as a single homogenous braze. The braze alloys can also be used, for example, as a component in a wide gap braze mixture where higher or lower melting point superalloy and/or brazing powder is used. The braze alloys may permit joining/repairing of superalloy articles with complex shape and may be used in high temperature applications.

METAL CARBIDE/NITRIDE PRECIPITATION CONTROL IN FUSION WELDING

Properties and performance of weld material between metals in a weldment is controlled by modifying one or more of the nitrogen content and the carbon content to produce carbide (e.g. MC-type), nitride and/or complex carbide/nitride (e.g. MX-type) type precipitates. Fusion welding includes (i) adjusting shield gas composition to increase nitrogen/carbon gas and nitride/carbide species, (ii) adjusting composition of nitrogen/carbon in materials that participate in molten welding processes, (iii) direct addition of nitrides/carbides (e.g. powder form), controlled addition of nitride/carbide forming elements (e.g. Ti, Al), or addition of elements that increase/impede solubility of nitrogen/carbon or nitride/carbide promoting elements (e.g. Mn), and (iv) other processes, such as use of fluxes and additive materials. Weld materials have improved resistance to different cracking mechanisms (e.g., hot cracking mechanisms and solid state cracking mechanisms) and improved tensile related mechanical ...

STAINLESS STEEL WIRE WITH FLUX CORE FOR WELDING ZINC COATED STEEL SHEETS

A stainless steel wire having a flux core for welding zinc-based alloy co ated steel sheet having an outer metal sheath coating a core of flux wherein in total having in mass (%) as percentage to the total mass of the wire: C: 0.01- 0.05 %, Si: 0.1- 1.5 %, Mn: 0.5- 3.0 %, Ni: 7.0- 10.0 %, Cr: 26.0- 30 .0 %, wherein an F value defined as a function of the above components range s from 30 to 50, the flux further having a slag formation agent in mass (%) as percentage to the total mass of the wire: TiO2 : 0.6- 2.6 %, SiO2 : 1.8- 3.8 %, ZrO2 : 1.0- 3.5 %, and optionally Al2O3: 0.1- 1.0 %, wherein the slag formation agent in total is less than 10%, and the wire further containing Fe and residual impurities.

LAYERED ASSEMBLIES FOR SUPERALLOY ARTICLE REPAIR

Methods of superalloy article repair are provided. In some embodiments, a method for repairing a nickel-based superalloy article comprises providing a layered assembly over a damaged region of the nickel-based superalloy article, the layered assembly comprising a nickel-based superalloy preform, an infiltration alloy preform and a melting point depressant component. The layered assembly is heated to form a nickel-based filler alloy metallurgically bonded to the damaged region, wherein primary carbide and secondary carbide phases are present in the nickel-based filler alloy in a combined amount of 0.5 to 10 vol.%.

NICKEL-COBALT ALLOY

The invention relates to a Ni-Co alloy, comprising 30 to 65 wt% Ni, > 0 to max. 10 wt% Fe, > 12 to < 35 wt% Co, 13 to 23 wt% Cr, 1 to 6 wt% Mo, 4 to 6 wt% Nb + Ta, > 0 to < 3 wt% Al, > 0 to < 2 wt% Ti, > 0 to max. 0.1 wt% C, > 0 to max. 0.03 wt% P, > 0 to max. 0.01 wt% Mg, > 0 to max. 0.02 wt% B, > 0 to max. 0.1 wt% Zr, which fulfils the following requirements and criteria: a) 900°C < ?' solvus temperature < 1030°C with 3 at% < Al+Ti (at%) < 5.6 at% and 11.5 at% < Co < 35 at%; b) stable microstructure after 500 h of ageing annealing at 800°C with a ratio Al/Ti > 5 (on the basis of the contents in at%).

FINE GRAINED NI-BASED ALLOYS FOR RESISTANCE TO STRESS CORROSION CRACKING AND METHODS FOR THEIR DESIGN

A class of nickel based alloys having a fine grain structure resistant to stress corrosion cracking, and methods of alloy design to produce further alloys within the class are presented. The alloys act as suitable welding materials in similar applications to that of Alloy 622. The line-grained structure of these novel alloys may also be advantageous for other reasons as well such as wear, impact, abrasion, corrosion, etc. These alloys have similar phases to Alloy 622 in that they are composed primarily of austenitie nickel, however the phase morphology is a much finer grained structure opposed to the long dendritic grains common to Alloy 622 when it is subject to cooling rates from a liquid state inherent to the welding process.

A COMPOSITE WELDING WIRE AND METHOD OF MANUFACTURING

The present invention is a composite welding wire for fusion welding of components manufactured of superalloys. The composite weld wire includes an inner core wire and a surface layer applied and bonded to the inner core wire. The surface layer includes alloying elements selected from among B and Si with a total bulk content of B and Si in the composite welding wire of 0.1 to 10 wt. %. Preferably the total bulk content of B is less than 4 wt. % and the surface layer comprises from 5 to 95 wt.% of the alloying elements selected from among B and Si.

METHOD OF CLADDING AND FUSION WELDING OF SUPERALLOYS USING COMPOSITE FILLER POWDER

The present concept is a method of cladding and fusion welding of superalloys and includes the steps of firstly application of a composite filler powder that comprises 5- 50% by weight brazing powder which includes melting point depressants, and 50-95% by weight high temperature welding powder, to a superalloy base material. Secondly there is simultaneous heating of the base material and the composite filler powder by a welding heat source that is movable relative to the base material. There is heating to a temperature that will fully melt the brazing powder and at least partially melt the high temperature welding powder and also melt a surface layer of the base material, thereby forming a weld pool. Thirdly upon solidification and cooling of the weld pool, there is coalescence between a weld bead and the base material.

METHOD OF APPLYING A PROTECTIVE CLADDING, PARTICULARLY TO GAS-TIGHT MEMBRANES OF ENERGY BOILERS

A method of applying a protective cladding, particularly to gas-tight membranes of energy boilers involves coupling of two gas-tight membranes (2) together, and then soaking a pair of gas-tight membranes (2) coupled together at 300°C to 800°C, favorably at around 700°C; afterwards, the membrane (2) surface where a cladding (1) is to be applied is cleaned, a pair of gas-tight membranes (2) coupled together is mounted on a positioner and then preheated up to 80°C to 600°C, favorably to around 300°C-450°C, and then the cleaned and preheated surface of a pair of gas- tight membranes (2) coupled together is covered with a protective cladding (1), wherein a protective cladding is applied at a thickness of 0.1 mm to 3.00 mm, favorably around 0.6 mm, and then the entire pair of gas-tight membranes (2) coupled together with a cladding (2) is finally soaked at 300°C to 800°C, favorably at around 700°C, and the set temperature is maintained for 10 minutes to 600 minutes, favorably for 15 minutes to ...

MATERIAL IN POWDER OR WIRE FORM ON A NICKEL BASIS FOR A COATING AND PROCESSES AND USES THEREFOR

A material in powder or wire form on a nickel basis for the production of a coating with a high level of resistance to corrosion and wear by means of a thermal coating process is of the following composition (in percent by weight): C 0.005 - 1.0; Cr 10.0 - 26.0; Mo 8.0 - 20.0; Fe 0.1 - 10.0; Si 3.0 - 7.0; B 1.0 - 4.0; Cu 0.1 - 5.0; Ni Balance. The material in powder form can be alloyed and sprayed out of the melt or agglomerated out of different alloyed and non-alloyed metal powders. The coating material can also be used in the form of a filling wire or an alloyed and cast bar material.

TURBINE BLADES MADE FROM MULTIPLE SINGLE CRYSTAL CAST SUPERALLOY SEGMENTS

Large gas turbine blades (10) made from separate cast segments (12, 14. 16, 18) of superalloys are disclosed. The turbine blade is designed such that bond lines between adjacent segments are placed in low stress regions of the blade. The cast superalloy segments of the blades are aligned and fitted together with specified tolerances. The turbine blade segments are then joined by transient liquid phase bonding, followed by a controlled heat treatment which produces the desired microstructure in the bond region. The method allows for the production of large, high quality turbine blades (10) by joining small, high quality cast superalloy sections (12, 14, 16, 18), in comparison with prior attempts to cast large turbine blades as single pieces which have produced very low yields and high individual component costs.

Electrode pour la soudure des alliages de nickel-chrome.

Verfahren zum Hartlöten von Stahlteilen.

Verfahren zur Herstellung eines gegen Hitze und Korrosion widerstandsfähigen Überzuges auf metallischen Gegenständen.

Flussmittel für Schweisselektroden

Schweissverfahren und nach diesem Verfahren erhaltene Schweissablagerung

Schweisselektrode und Verwendung derselben

Schweissmaterial

Niob enthaltende Lichtbogenschweisselektrode

Hartlot

Electrode enrobée pour la soudure à l'arc électrique

Schweisselektrode zum Lichtbogenschweissen von Kupfer und Kupferlegierungen

Procédé de fabrication d'une construction soudée

Lötmischung

Electrode pour la soudure à l'arc électrique

Schweisselektrode zur Herstellung von verschleissfesten und korrosionsbeständigen Aufpanzerungen

Poudre d'alliage métallique

Verfahren zum Verbinden von Teilen aus Hochleistungslegierung und Bindemittelpulver zur Durchführung des Verfahrens

ALLIAGES DE POUR LE SOUDAGE A L'ARC REMPLISSAGEPROTEGE.

DENTALLOT AND ITS USE.

INTERMEDIATE LAYER ALLOY IN FORM OF A FOIL OR A WIRE FOR USE WITH DIFFUSION CONNECTIONS OF NICKEL BASIS SUPERALLOYS.

NICKEL-BASED ALLOY.

PROCEDURE FOR APPLYING A LAYER BY FUSION WELDING.

HIGH HARDNESS ALLOY HEAT RESISTANT.

BRAZING ALLOY NICKEL BASE, USE OF SUCH AN ALLOY AND BRAZED JOINT CONTAINING SAID ALLOY.

POWDERED SPRAYING MATERIAL ON NICKEL CHROME BASIS.

DURCH EIN THERMISCHES AUFTRAGSVERFAHREN HERGESTELLTE SCHUTZSCHICHT UND PULVERFOERMIGE WERKSTOFFE ZUM HERSTELLEN DERSELBEN.

The protection layer is comprised of an alloy having the following composition: C 0.5-1.5 ; Si 0.5-4.5 ; Mn 0.1-1.5 ; Cr 14-30 ; Mo 0.1-17 ; Fe 0.1-5 ; B 0.1-3.8 ; Co 0.01-1 ; W 0.2-5 ; Ni the rest. The pulverulent material for the preparation of the protection layer is comprised of a mixture of alloys A, B and C in the ratio 20 - 50 / 20 - 50 / 25 - 45% by weight, distributed as follows: A : 20%-50% ; B : 20%-50% ; C : 25%-45%. The layer obtained is thermostable up to 600C and has a good resistance to wear and corrosion.

Article and method of making an article.

Es sind ein Gegenstand und ein Verfahren zur Herstellung formgestalteter Kühllöcher in einem Gegenstand geschaffen. Das Verfahren enthält die Schritte des Auftragens eines Metalllegierungspulvers, um eine Anfangsschicht zu bilden, die wenigstens eine Öffnung enthält, des Schmelzens des Metalllegierungspulvers mit einer fokussierten Energiequelle, um die Pulverschicht in eine Metalllegierungsbahn umzuwandeln, des darauffolgenden Auftrags einer zusätzlichen Schicht des Metalllegierungspulvers, um eine Schicht zu bilden, die wenigstens eine Öffnung enthält, die der wenigstens einen Öffnung in der Anfangsschicht entspricht, des Schmelzens der zusätzlichen Schicht des Metalllegierungspulvers mit der fokussierten Energiequelle zur Erhöhung der Bahndicke und des Wiederholens der Schritte des aufeinanderfolgenden Auftrags und Aufschmelzens der zusätzlichen Schichten des Metalllegierungspulvers, bis eine Struktur, die wenigstens eine Öffnung mit einem vorbestimmten Profil enthält, erhalten wird.

Article and method of making an article.

Es sind ein Gegenstand und ein Verfahren zur Herstellung formgestalteter Kühllöcher in einem Gegenstand geschaffen. Das Verfahren enthält die Schritte des Auftragens eines Metalllegierungspulvers, um eine Anfangsschicht zu bilden, die wenigstens eine Öffnung enthält, des Schmelzens des Metalllegierungspulvers mit einer fokussierten Energiequelle, um die Pulverschicht in eine Metalllegierungsbahn umzuwandeln, des darauffolgenden Auftrags einer zusätzlichen Schicht des Metalllegierungspulvers, um eine Schicht zu bilden, die wenigstens eine Öffnung enthält, die der wenigstens einen Öffnung in der Anfangsschicht entspricht, des Schmelzens der zusätzlichen Schicht des Metalllegierungspulvers mit der fokussierten Energiequelle zur Erhöhung der Bahndicke und des Wiederholens der Schritte des aufeinanderfolgenden Auftrags und Aufschmelzens der zusätzlichen Schichten des Metalllegierungspulvers, bis eine Struktur, die wenigstens eine Öffnung mit einem vorbestimmten Profil enthält, erhalten wird.

HARD ALLOY CONTAINING NICKEL RESISTING WEAR WELL

Improvements with the joints of welding between austenitic steel and ferritic steel parts

WIRE ELECTRODE

Alloys of welding by pulverization of the boron-silicon-nickel type

Use of a nickel alloy as brazing metal

PROCEDE DE FABRICATION DE SUPERALLIAGES POUVANT ETRE BRASES ET ARTICLE OBTENU

L'INVENTION CONCERNE UN PROCEDE DE FABRICATION D'UNE TOLE MINCE OU D'UN PRODUIT DE SECTION MINCE. SELON L'INVENTION, ON LAMINE A FROID UN SUPERALLIAGE A BASE DE NICKEL CONTENANT AU MOINS ENVIRON 3 EN POIDS D'ELEMENTS REACTIFS PUIS ON TRAITE THERMIQUEMENT, DE MANIERE ALTERNEE, L'ALLIAGE LAMINE A FROID PENDANT UN TEMPS PLUS COURT QUE 3 MINUTES DANS UNE ATMOSPHERE A UNE PRESSION PARTIELLE D'OXYGENE DE MOINS D'ENVIRON 10 BAR ET A UNE TEMPERATURE D'ENVIRON 1079 C, MAIS AU-DELA DE LA TEMPERATURE DU SOLVUS DES COMPOSES INTERMETALLIQUES GAMMA PRIME QUI PEUVENT SE FORMER DANS L'ALLIAGE ET ON REFROIDIT ENFIN RAPIDEMENT DE MANIERE A OBTENIR DES PROPRIETES OPTIMALES. LE DESSIN JOINT EST UNE REPRESENTATION GRAPHIQUE DE LA RELATION ENTRE LA TEMPERATURE DE RECUIT, LE POTENTIEL D'OXYGENE DE L'ATMOSPHERE DU FOUR ET LA FORMATION D'OXYDES A LA SURFACE DES SUPERALLIAGES. L'INVENTION S'APPLIQUE NOTAMMENT A LA METALLURGIE.

Process of welding

COATING CONTAINING NICKEL FOR SUPERALLOYS AND PARTS THUS OBTAINED

WELDING FOR APPARATUSES OF DENTAL PROSTHESIS

ELECTRODE OF WELDING OUT OF ALLOY BASES CORRESPONDING NICKEL AND ALLOY

Electrode de soudage comportant un fil ou un feuillard en alliage base nickel dont la composition chimique comprend, en poids : 20 % ≤ Cr ≤ 24 %; 8 % ≤ Mo ≤ 12% % 0, 1 % ≤ W ≤ 5 %; Mo + W > 12 %; Fe < 5 %; Cu < 0, 1 %; N < 0, 1%; C < 0, 02 %; Si < 0, 1 %; Mn < 0, 4%; 0, 03% ≤ Al ≤ 0, 4%; 0, 004 % ≤ Mg ≤ 0, 04% %; P < 0, 02 %; S < 0, 02 %; le reste étant du nickel et des impuretés résultant de l'élaboration. Alliage base nickel.

electrode for the welding

PROCESS OF REPAIR OF METAL PARTS

Alliage à base de nickel et pièce moulée en cet alliage.

L'INVENTION CONCERNE UN ALLIAGE A BASE DE NICKEL, RESISTANT A L'USURE. LES ELEMENTS PRINCIPAUX DE L'ALLIAGE SELON L'INVENTION SONT LE CHROME, LE BORE, LE SILICIUM ET LE CARBONE. L'ALLIAGE PEUT EGALEMENT CONTENIR D'AUTRES ELEMENTS, SOIT SOUS FORME D'ADDITIFS FACULTATIFS, SOIT SOUS FORME D'IMPURETES. L'ALLIAGE SELON L'INVENTION PRESENTE UNE TRES GRANDE RESISTANCE AUX DIVERSES FORMES D'USURE AINSI QU'A DIVERS MILIEUX CORROSIFS. DOMAINE D'APPLICATION: PIECES DE MOTEUR, DE MACHINES, ETC.

Friction stir welding and processing of oxide dispersion strengthened (ods) alloys

A method of welding including forming a filler material of a first oxide dispersoid metal, the first oxide dispersoid material having first strengthening particles that compensate for decreases in weld strength of friction stir welded oxide dispersoid metals; positioning the filler material between a first metal structure and a second metal structure each being comprised of at least a second oxide dispersoid metal; and friction welding the filler material, the first metal structure and the second metal structure to provide a weld.

Repair of turbine components and solder alloy therefor

A method for repairing a component of a gas turbine and a solder alloy are disclosed. In an embodiment, the method includes applying the solder alloy to the component in an area of the component having a punctiform damage or a linear imperfection, where the solder alloy is a mixture of a NiCoCrAlY alloy and a Ni-based solder. A molded repair part made of the solder alloy is applied to the component in an area of the component having a planar defect. The component is heat treated to solder the molded repair part on the component and to solder the solder alloy applied to the component in the area of the component having the punctiform damage or the linear imperfection. The component is cooled after the heat treating and, following the cooling, the component is further heat treated.

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.

Braze alloy for high-temperature brazing and methods for repairing or producing components using a braze alloy

In a Ni-based, Co-based, or Ni—Co-based braze alloy ( 1 ) for high-temperature brazing of components ( 7 ) of modular structure and for repairing damaged components ( 7 ) which are formed of single crystal or directionally solidified superalloys using said braze alloy ( 1 ), the braze alloy has a first metallic powder component ( 2 ) having particle sizes in the nanometer range and a second metallic powder component ( 3 ) having particle sizes in the micrometer range. The surface of the particles of the second powder component ( 3 ) is thinly coated with particles of the first powder component ( 2 ). The braze alloy ( 1 ) additionally includes grain boundary stabilizing elements as alloying elements. In addition, melting point depressants can be present in the braze alloy ( 1 ) in a commercially common quantity or with a considerably increased proportion. Both the melting temperature of the braze alloy ( 1 ) and the probability of recrystallization are advantageously reduced.

NICKEL-BASED HYDROCHLORIC ACID CORROSION RESISTANT ALLOY FOR BRAZING

Provided is a hydrochloric acid corrosion resistant alloy For brazing that is provided with corrosion resistance against hydrochloric acid, and when brazing various types of stainless steel, can be used for brazing at practical temperatures (1150° C. or less), and has good joint strength and brazeability to the substrate. The hydrochloric acid corrosion resistant alloy of the present invention contains, in mass percent, 6.0-18.0% Mo, 10.0-25.0% Cr, 0.5-5.0% Si, and 4.5-8.0% P, with the remainder being 40.0-73.0% Ni and unavoidable impurities, and the total of Si and P being 6.5-10.5%. In this case, the alloy may contain 12.0% or less of Cu, 20.0% or less of Co, 15.0% or less of Fe, 8.0% or less of W, 5.0% or less of Mn, and 0.5% or less of the total of C, B, Al, Ti, and Nb. 1. A hydrochloric acid corrosion resistant alloy for brazing which contains 6.0-18.0 mass % of Mo , 10.0-25.0 mass % of Cr , 0.5-5.0 mass % of Si , and 4.5-8.0 mass % of P , with the remainder being 40.0-73.0 mass % of Ni and unavoidable impurities , and the total of Si and P being 6.5-10.5 mass %.2. The hydrochloric acid corrosion resistant alloy for brazing as defined in claim 1 , which further contains Cu in an amount of 12.0 mass % or less.3. The hydrochloric acid corrosion resistant alloy for brazing as defined in claim 1 , which contains 20.0 mass % or less of Co claim 1 , 15.0 mass % or less of Fe claim 1 , 8.0 mass % or less of W claim 1 , 5.0 mass % or less of Mn claim 1 , and 0.5 mass % or less of the total of C claim 1 , B claim 1 , Al claim 1 , Ti claim 1 , and Nb claim 1 , with the total of Co claim 1 , Fe claim 1 , W claim 1 , Mn claim 1 , C claim 1 , B claim 1 , Al claim 1 , Ti and Nb being 20.0 mass % or less.4. The hydrochloric acid corrosion resistant alloy for brazing as defined in claim 2 , which contains 20.0 mass % or less of Co claim 2 , 15.0 mass % or less of Fe claim 2 , 8.0 mass % or less of W claim 2 , 5.0 mass % or less of Mn claim 2 , and 0.5 mass % or less of the ...

Ni-BASED ALLOY FOR WELDING MATERIAL AND WELDING WIRE, ROD AND POWER

A Ni-based alloy for a welding material including, by mass, 0.001 to 0.1% of C, 18 to 25% of Co, 16 to 20% of Cr, 2.5 to 3.5% of Al, 9.0 to 15.0% of Mo+W, 0.001 to 0.03% of B and the balance being Ni and inevitable impurities. 1. A Ni-based alloy for a welding material comprising , by mass , 0.001 to 0.1% of C , 18 to 25% of Co , 16 to 20% of Cr , 2.5 to 3.5% of Al , 9.0 to 15.0% of Mo+W , 0.001 to 0.03% of B and the balance being Ni and inevitable impurities.2. The Ni-based alloy according to claim 1 , comprising 0.001 to 0.05% of C by mass.3. The Ni-based alloy according to claim 1 , comprising 10.0 to 14.0% of Mo+W by mass.4. The Ni-based alloy according to claim 1 , comprising claim 1 , by mass claim 1 , 0.01 to 0.04% of C claim 1 , 20 to 23% of Co claim 1 , 17 to 19% of Cr claim 1 , 2.8 to 3.2% of Al claim 1 , 10.0 to 12.0% of Mo+W and 0.003 to 0.01% of B.5. The Ni-based alloy according to claim 1 , wherein a solid solution temperature of a γ′(NiAl) strengthening phase is in a range of 850 to 900° C. claim 1 , and an amount of the precipitation at 800° C. is 10 to 25% by volume.6. The Ni-based alloy according to claim 1 , wherein a creep rupture time of a weld portion under conditions of 800° C. and 294 MPa is 200 hours or longer.7. A welding wire including the Ni-based alloy according to .8. A welding rod including the Ni-based alloy according to .9. A welding powder including the Ni-based alloy according to . The present invention relates to a high strength Ni-based alloy that is of γ′ precipitation strengthening type and also has excellent weldability.A ferrite-based heat resistant steel, a Ni-based superalloy or the like have an excellent strength at a high temperature and are used for various high temperature components for a thermal power-generating plant. Many of these materials are welded to form structural components. Since a service temperature of the materials rises higher along with improvement of power generation efficiency, the welding material is ...

Method of Joining at Least Two Components, a Method for Rendering a Component Resistant to Eroision, and a Turbine Blade

A method of joining at least two components, a method of preventing erosion of a base component and a turbine blade is provided. The method of joining at least two components includes providing a laser cladding apparatus, aligning a first component and second component, and jointing the first and second components by laser cladding. The first component includes a first joining surface adjacent to a seconding joining surface of the second component. The first joining surface and the second joining surface are joined by laser cladding along a joining plane. A joining material from the laser cladding provides at least one joining layer between the first joining surface and the second joining surface. The first and second joining surfaces include a bevel angle. A method for rendering a component resistant to erosion and a turbine blade are also provided.

COBALT-BASED ALLOY COMPRISING GERMANIUM AND METHOD FOR SOLDERING

Cobalt-based solder alloys are proposed. The cobalt-based solder alloys have germanium. The germanium has a higher melting point than nickel-based alloys such that the germanium is used advantageously for repairing or treating components having the nickel-based alloys used at high temperatures. The components are repaired or treated by soldering using the cobalt-based solder alloys. 115.-. (canceled)16. A cobalt-based solder alloy , comprising (in % by weight):7.0% to 9.0% nickel,17% to 21% chromium,5.0% to 6.5% tungsten,2.0% to 4.0% tantalum,0.1% to 0.3% titanium,13% to 27% germanium,optionally 0.3% to 0.7% carbon, andoptionally 0.2% to 0.7% zirconium.17. The solder alloy as claimed in claim 16 , further comprising:7.5% to 8.5% nickel,18.0% to 20.5% chromium,5.1% to 6.1% tungsten,2.5% to 3.2% tantalum,0.2% titanium,14% to 26% germanium,optionally 0.4% to 0.6% carbon, andoptionally 0.3% to 0.6% zirconium.18. The solder alloy as claimed in claim 16 , further comprising 18% to 22% germanium.19. The solder alloy as claimed in claim 16 , wherein the solder alloy comprises zirconium.20. The solder alloy as claimed in claim 16 , wherein the solder alloy comprises carbon.21. The solder alloy as claimed in claim 16 , wherein the germanium is replaced partially or completely by gallium.22. The solder alloy as claimed in claim 16 , wherein the germanium is replaced at most partially by gallium.23. The solder alloy as claimed in claim 16 , wherein the germanium is replaced at most partially by silicon.24. The solder alloy as claimed in claim 16 , wherein the germanium is replaced at most partially by silicon to an extent of 90%.25. The solder alloy as claimed in claim 16 , wherein the cobalt represents the remainder such that no further alloying elements are present.26. The solder alloy as claimed in claim 16 , wherein the solder alloy comprises no molybdenum except for impurities.27. The solder alloy as claimed in claim 16 , wherein the solder alloy contains no manganese and/ ...

NI-BASE ALLOY WELD METAL, STRIP ELECTRODE, AND WELDING METHOD

A weld metal contains Cr: 28.0% to 31.5% by mass, Fe: 7.0% to 11.0% by mass, Nb and Ta: 1.5% to 2.5% by mass in total, C: 0.015% to 0.040% by mass, Mn: 0.5% to 4.0% by mass, N: 0.005% to 0.080% by mass, Si: 0.70% by mass or less (and more than 0%), Al: 0.50% by mass or less, Ti: 0.50% by mass or less, Mo: 0.50% by mass or less, Cu: 0.50% by mass or less, B: 0.0010% by mass or less, Zr: 0.0010% by mass or less, Co: 0.10% by mass or less, P: 0.015% by mass or less, and S: 0.015% by mass or less, the remainder being Ni and incidental impurities. 1. A Ni-base alloy weld metal , comprising:Cr: 28.0% to 31.5% by mass,Fe: 7.0% to 11.0% by mass,Nb and Ta: 1.5% to 2.5% by mass in total,C: 0.015% to 0.040% by mass,Mn: 0.5% to 4.0% by mass,N: 0.005% to 0.080% by mass,Si: 0.70% by mass or less (and more than 0%),Al: 0.50% by mass or less,Ti: 0.50% by mass or less,Mo: 0.50% by mass or less,Cu: 0.50% by mass or less,B: 0.0010% by mass or less,Zr: 0.0010% by mass or less,Co: 0.10% by mass or less,P: 0.015% by mass or less, andS: 0.015% by mass or less,the remainder being Ni and incidental impurities.2. The Ni-base alloy weld metal according to claim 1 , formed by electroslag welding or submerged arc welding using a strip electrode.3. A strip electrode claim 1 , comprising:Cr: 28.5% to 32.0% by mass,Fe: 7.0% to 11.0% by mass,Nb and Ta: 1.5% to 2.5% by mass in total,C: 0.015% to 0.040% by mass,Mn: 0.5% to 4.0% by mass,N: 0.005% to 0.080% by mass,Si: 0.40% by mass or less (and more than 0%)Al: 0.50% by mass or less,Ti: 0.50% by mass or less,Mo: 0.50% by mass or less,Cu: 0.50% by mass or less,B: 0.0010% by mass or less,Zr: 0.0010% by mass or less,Co: 0.10% by mass or less,P: 0.015% by mass or less, andS: 0.015% by mass or less,the remainder being Ni and incidental impurities.4. The strip electrode according to claim 3 , for use in electroslag welding or submerged arc welding.5. A welding method claim 3 , comprising:performing electroslag welding or submerged arc welding using a strip ...

Metallic compositions useful for brazing, and related processes and devices

A braze alloy composition is disclosed, containing nickel, about 5% to about 40% of at least one refractory metal selected from niobium, tantalum, or molybdenum; about 2% to about 32% chromium; and about 0.5% to about 10% of at least one active metal element. An electrochemical cell that includes two components joined to each other by such a braze composition is also described. A method for joining components such as those within an electrochemical cell is also described. The method includes the step of introducing a braze alloy composition between a first component and a second component to be joined, to form a brazing structure. In many instances, one component is formed of a ceramic, while the other is formed of a metal or metal alloy.

NI-TI-CR NEAR TERNARY EUTECTIC ALLOY FOR GAS TURBINE COMPONENT REPAIR

A ternary near eutectic alloy of Ni, Ti, Cr is described having a relatively low melting temperature of approximately 1230 deg. C. or less, suitable for fusing cracks in turbine blades and vanes without substantial risk of cracking during the repair process. Such an alloy is suitable for low temperature joining or repair of turbine blades since it contains the same components as typical turbine blades and vanes without foreign elements to lower the melting point of the repaired material or adversely affect the mechanical properties of the repaired component. Exclusion of boron eliminates the formation of brittle boron compounds, detrimental to the properties of the repair or seam. 1. A ternary alloy comprising nickel , titanium and chromium and having a melting temperature less than about 1230 deg. C. suitable for low temperature joining or repair of gas turbine components.2. A ternary alloy comprising nickel , titanium and chromium wherein said nickel is present in an amount in the range from approximately 55 to approximately 65 weight percent , and said titanium is present in an amount in the range from approximately 15 to approximately 25 weight percent , and said chromium is present in an amount in the range from approximately 15 to approximately 25 weight percent.3. A ternary alloy as in wherein said nickel is present in an amount of approximately 60 weight percent claim 2 , said titanium is present in an amount of approximately 20 weight percent and said chromium is present in an amount of approximately 20 weight percent.4. A ternary alloy as in wherein substantially no boron is present in said alloy.5. A method for repairing or joining a gas turbine component comprising: wherein said filler material has a melting temperature less than the solution heat treatment temperature of said base material; and', 'wherein said mixture contains relative fractions of said filler material and said base material so that full homogenization is achieved after heat treatment ...

BRAZE COMPOSITIONS, AND RELATED DEVICES

A braze alloy composition for sealing a ceramic component to a metal component in an electrochemical cell is presented. The braze alloy composition includes copper, nickel, and an active metal element. The braze alloy includes nickel in an amount less than about 30 weight percent, and the active metal element in an amount less than about 10 weight percent. An electrochemical cell using the braze alloy for sealing a ceramic component to a metal component in the cell is also provided. 1. An electrochemical cell comprising:a tubular separator disposed in a cell case defining a portion of a cathodic chamber and an anodic chamber, wherein the cathodic chamber comprises an alkali metal halide, and forms an ion capable of conducting through the separator;an electrically insulating ceramic collar disposed on a top end of the separator, anda metal ring disposed on the electrically insulating ceramic collar,wherein the electrically insulating ceramic collar is joined to the metal ring by a braze alloy composition comprising nickel, chromium, iron, silicon, boron and an active metal element, wherein chromium is present in an amount less than 10 weight percent, iron is present in an amount less than 10 weight percent, silicon is present in an amount from about 2 weight percent to about 10 weight percent, boron is present in an amount less than 5 weight percent, the active metal element is present in an amount from about 1 weight percent to about 3 weight percent, based on a total weight of the braze alloy composition, wherein the active metal element comprises titanium, zirconium, hafnium, vanadium, or a combination thereof, and wherein the braze alloy composition is in direct contact with both the electrically insulating ceramic collar and the metal ring.2. The electrochemical cell of claim 1 , wherein the alkali metal halide comprises sodium halide.3. The electrochemical cell of claim 1 , wherein the anodic chamber contains sodium.4. The electrochemical cell of claim 1 , ...

Abrasive Coating and Manufacture and Use Methods

A method for applying an abrasive comprises: applying, to a substrate, the integral combination of: a self-braze material; an abrasive; and a matrix in which the abrasive is at least partially embedded; and heating to cause the self-braze material to braze to the substrate. The heating leaves at least a portion of the self-braze material with a composition comprising, in weight percent: cobalt 2.5-13.5; chromium 12-27; aluminum 5-7; yttrium 0.0-1.0; hafnium 0.0-1.0; silicon 1.0-3.0; tantalum 0.0-4.5; tungsten 0.0-6.5; rhenium 0.0-2.0; molybdenum 0.1-1.0; and the balance nickel. 1. A method for applying an abrasive , the method comprising: a self-braze material;', 'an abrasive; and', 'a matrix in which the abrasive is at least partially embedded; and, 'applying, to a substrate, the integral combination of cobalt 2.5-13.5;', 'chromium 12-27;', 'aluminum 5-7;', 'yttrium 0.0-1.0;', 'hafnium 0.0-1.0;', 'silicon 1.0-3.0;', 'tantalum 0.0-4.5;', 'tungsten 0.0-6.5;', 'rhenium 0.0-2.0;', 'molybdenum 0.1-1.0; and', 'the balance nickel., 'heating to cause the self-braze material to braze to the substrate, the heating leaving at least a portion of the self-braze material with a composition comprising, in weight percent2. The method of wherein: cobalt 2.5-13.5;', 'chromium 12-27;', 'aluminum 5-7;', 'yttrium 0.0-1.0;', 'hafnium 0.0-1.0;', 'silicon 1.0-3.0;', 'tantalum 2.0-4.5;', 'tungsten 2.0-6.5;', 'rhenium 0.0-2.0;', 'molybdenum 0.1-1.0; and', 'the balance nickel., 'said portion of the self-braze material has said composition comprising, in weight percent3. The method of wherein:said composition has no more than 1.0 weight percent of any other individual element.4. The method of wherein:said composition has no more than 3.0 weight percent of all other individual elements combined.5. The method of wherein:the matrix comprises an MCrAlY; andthe abrasive comprises cubic boron nitride.6. The method of wherein the self-braze material comprises a sintered sheet of:at least one first ...

Abrasive Coating and Manufacture and Use Methods

A method for applying an abrasive comprises: applying, to a substrate, the integral combination of a self-braze material, an abrasive, a matrix in which the abrasive is at least partially embedded, and an intermediate layer between the self-braze material and the matrix; and heating to cause the self-braze material to braze to the substrate. 1. A method for applying an abrasive , the method comprising:applying, to a substrate, the integral combination of:a self-braze material;an abrasive;a matrix in which the abrasive is at least partially embedded; andan intermediate layer between the self-braze material and the matrix; andheating to cause the self-braze material to braze to the substrate.2. The method of wherein the intermediate layer is a cast layer.3. The method of wherein the heating leaves at least a portion of the self-braze material with a composition comprising claim 1 , in weight percent:cobalt 2.5-13.5;chromium 12-27;aluminum 5-7;yttrium 0.0-1.0;hafnium 0.0-1.0;silicon 1.0-3.0;tantalum 0.0-4.5;tungsten 0.0-6.5;rhenium 0.0-2.0;molybdenum 0.1-1.0; andthe balance nickel.4. The method of wherein:said portion of the self-braze material has said composition comprising, in weight percent:cobalt 2.5-13.5;chromium 12-27;aluminum 5-7;yttrium 0.0-1.0;hafnium 0.0-1.0;silicon 1.0-3.0;tantalum 2.0-4.5;tungsten 2.0-6.5;rhenium 0.0-2.0;molybdenum 0.1-1.0; andthe balance nickel.5. The method of wherein:said composition has no more than 1.0 weight percent of any other individual element.6. The method of wherein:said composition has no more than 3.0 weight percent of all other individual elements combined.7. The method of wherein:the matrix comprises an MCrAlY; andthe abrasive comprises cubic boron nitride.8. The method of wherein the self-braze material comprises a sintered sheet of:at least one first alloy of low melting point relative to the substrate; andat least one second alloy of high melting point relative to the first alloy.9. The method of wherein:the at least one ...

Abrasive Preforms and Manufacture and Use Methods

A method for applying an abrasive comprises: applying, to a substrate, the integral combination of: a self-braze material; and an abrasive embedded in the self-braze material; and securing the combination to the substrate. 1. A method for applying an abrasive , the method comprising: a self-braze material; and', 'an abrasive embedded in the self-braze material; and, 'applying, to a substrate, the integral combination ofsecuring the combination to the substrate.2. The method of wherein:the securing comprises heating to cause the self-braze material to braze to the substrate or an intervening component.3. The method of wherein the applying comprises applying an assembly of the combination and at least one additional braze material layer claim 1 , said additional braze material layer lacking abrasive.4. The method of wherein the assembly further comprises a cast intermediate layer.5. The method of wherein the self-braze material and the at least one additional braze material layer each comprise a mixture of alloys of different melting points.6. The method of wherein: cobalt 2.5-13.5;', 'chromium 12-27;', 'aluminum 5-7;', 'yttrium 0.0-1.0;', 'hafnium 0.0-1.0;', 'silicon 1.0-3.0;', 'tantalum 0.0-4.5;', 'tungsten 0.0-6.5;', 'rhenium 0.0-2.0;', 'molybdenum 0.1-1.0; and', 'the balance nickel., 'the securing comprises heating and leaves at least a portion of the self-braze material with a composition comprising, in weight percent7. The method of wherein: cobalt 2.5-13.5;', 'chromium 12-27;', 'aluminum 5-7;', 'yttrium 0.0-1.0;', 'hafnium 0.0-1.0;', 'silicon 1.0-3.0;', 'tantalum 2.0-4.5;', 'tungsten 2.0-6.5;', 'rhenium 0.0-2.0;', 'molybdenum 0.1-1.0; and', 'the balance nickel., 'said portion of the self-braze material has said composition comprising, in weight percent8. The method of wherein:said composition has no more than 1.0 weight percent of any other individual element.9. The method of wherein:said composition has no more than 3.0 weight percent of all other individual ...

Gamma, gamma' cobalt based alloys for additive manufacturing methods or soldering, welding, powder and component

The invention relates to gamma, gamma'-cobalt-based alloys for additive manufacturing methods or soldering, welding, powder and component. By using a cobalt-based alloy based on Co-7W-7 Al-23Ni-2Ti-2Ta-12Cr-0.0IB-0.IC-(0-0.1Si), an alloy that is especially well-suited for additive manufacturing methods or high-temperature soldering is proposed.

Brazing and soldering alloy wires

Brazing alloy wire formed from a composite comprising a sheath of at least one ductile first phase and a core comprising particles of a different composition to the sheath, in which: the sheath has an annealing temperature in degrees K the particles have a melting point at least 20% above the annealing temperature of the sheath the particles have a size distribution in which 25% by weight or less comprise particles less than 25 μm in size the particles are discrete

Abrasive Preforms and Manufacture and Use Methods

A method for applying an abrasive comprises: applying, to a substrate, the integral combination of: a self-braze material; and an abrasive embedded in the self-braze material; and securing the combination to the substrate. 1. A braze preform comprising the integral combination of:a self-braze material; andan abrasive embedded in the self-braze material.2. The braze preform of wherein the self-braze material comprises a sintered mixture of:at least one first alloy; andat least one second alloy of high melting point relative to the first alloy.3. The braze preform of further comprising:an additional braze material layer without abrasive.4. The braze preform of further comprising:a Ni-based superalloy layer between the additional braze material layer and the combination.5. The braze preform of wherein:the Ni-based superalloy layer is a cast layer.6. An abrasive braze preform comprising:a self-braze layer; anda matrix at least partially embedding an abrasive.7. The preform of further comprising:an intermediate layer between the matrix and the self-braze layer.8. The preform of wherein:the intermediate layer is a pre-cast layer9. The preform of wherein:the intermediate layer is diffusion brazed to the self-braze layer.10. The preform of wherein: at least one first alloy; and', 'at least one second alloy of high melting point relative to the first alloy;, 'the self-braze layer comprises a sintered sheet of11. The preform of wherein:the at least one first alloy comprises about 21.25-22.75 chromium, about 5.7-6.3 aluminum, about 11.5-12.5 cobalt, about 5.7-6.3 silicon, boron in an amount no greater than 1.0 weight percent, and a balance of nickel plus impurities if any; andthe at least one second alloy comprises about 4.75-10.5 chromium, about 5.5-6.7 aluminum, up to about 13 weight percent cobalt, about 3.75-9.0 tantalum, about 1.3-2.25 molybdenum, about 3.0-6.8 tungsten, about 2.6-3.25 rhenium, up to about 0.02 boron, about 0.05-2.0 hafnium, up to about 0.14 carbon, up to ...

Brazing alloy powder and joined component

Provided is a brazing alloy powder with which the development of defect in a brazed portion is suppressed and which enables an increase in the joint strength of the portion to be joined. Also provided is a brazed joined component having a high joint strength of the portion to be joined. The brazing alloy powder includes particles which include 55 mass % or more of at least one element selected from Ni, Fe, and Co. The alloy powder includes not less than 10% alloy particles having an amorphous phase. In addition, d90≦60 μm, where d90 is the grain diameter indicating 90% in an integral volume distribution curve according to a laser diffraction scattering method. The joined component includes a plurality of members joined with a brazing material including the brazing alloy powder.

Submerged arc welding process

A submerged arc welding process using welding wire containing, based on the total mass of the welding wire, Ni: 50% or more by mass, Cr: 14.5% to 16.5% by mass, Mo: 15.0% to 17.0% by mass, W: 3.0% to 4.5% by mass, Fe: 4.0% to 7.0% by mass, and C, Si, Mn, P, S, Cu, V, Co, and Al: a predetermined amount or less, and a bonded flux containing, based on the total mass of the bonded flux, Al 2 O 3 : 35% to 55% by mass, SiO 2 : 5% to 25% by mass, CaO: 2% to 10% by mass, CaF 2 : 25% to 45% by mass, and Na 2 O: 2% to 4% by mass.

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.

Systems and Methods of Fabrication and Use of Wear-Resistant Materials

Discussed herein are systems and methods of forming hardfacing coatings and films containing Q-carbon diamond particles for use in downhole drilling tooling and other tools where wear-resistant coating is desirable. The Q-carbon diamond-containing layers may be coated with matrix material and/or disposed in a matrix to form the coating, or the Q-carbon diamond layer may be formed directly from a diamond-like-carbon on a substrate.

SYSTEMS AND METHODS FOR DISSIMILAR MATERIAL WELDING

A system is provided comprising a hardened stud body and an unhardened stud subunit coupled to the hardened stud body. The hardened stud body may comprise a first composition having by weight between 17% and 21% chromium, between 2.8% and 3.3% molybdenum, between 50% to 55% nickel, and between 4.75% and 5.5% niobium. The unhardened stud subunit may comprise a second composition having by weight between 20% and 23% chromium, between 8% and 10% molybdenum, at least 58% nickel, and between 3.15% and 4.15% niobium. 1. A method comprising:welding an unhardened stud body comprising a first composition to an unhardened stud subunit comprising a second composition, to form a stud having an unhardened subunit portion; andheat treating the stud.2. The method of claim 1 , wherein the first composition comprises by weight between 17% and 21% chromium claim 1 , between 2.8% and 3.3% molybdenum claim 1 , between 50% to 55% nickel claim 1 , and between 4.75% and 5.5% niobium.3. The method of claim 2 , wherein the second composition comprises by weight between 20% and 23% chromium claim 2 , between 8% and 10% molybdenum claim 2 , at least 58% nickel claim 2 , and between 3.15% and 4.15% niobium.4. The method of claim 2 , wherein the first composition conforms to ASTM A1014/A1014M.5. The method of claim 3 , wherein the second composition conforms to ASTM B444.6. The method of claim 1 , wherein the heat treating comprises a precipitation heat treatment.7. The method of claim 1 , wherein welding the unhardened stud body to the unhardened stud subunit comprises at least one of friction welding claim 1 , explosive welding claim 1 , resistance welded claim 1 , laser welding claim 1 , or gas tungsten arc welding.8. The method of claim 1 , wherein welding the stud to the substrate comprises capacitor discharge welding.9. The method of claim 1 , wherein the substrate comprises a third composition having by weight between 20% and 23% chromium claim 1 , between 8% and 10% molybdenum claim 1 , ...

Method For Applying Brazing Material To Metal Honeycomb Matrix, Metal Honeycomb Matrix And Manufacturing Method Thereof

A method for applying brazing material to a metal honeycomb matrix is provided. The method comprises the following steps of: a) applying a brazing material in a paste form, i.e., a solder paste, to one end face of the metal honeycomb matrix; b) distributing the solder paste in the metal honeycomb matrix. A metal honeycomb matrix and a method for manufacturing the metal honeycomb matrix are also provided. 1. A method for applying a brazing material to a metal honeycomb matrix with two open end faces , which contains a metal housing and a metal honeycomb core constructed by stacking and winding up smooth and corrugated metal sheets , comprising the steps ofa) applying the brazing material in a form of a solder paste to one open end face of the metal honeycomb matrix; andc) distributing the solder paste in the metal honeycomb matrix.2. The method according to claim 1 , wherein the solder paste is applied in a predetermined amount in step a).3. The method according to claim 1 , wherein the solder paste is applied by coating claim 1 , brush coating claim 1 , knife coating claim 1 , wash coating claim 1 , spray coating claim 1 , or by using a dispenser or grouter in step a).4. The method according to claim 1 , wherein the solder paste is distributed in the contact joints of the corrugated sheets and smooth sheets and/or the housing by said step c).5. The method according to claim 1 , wherein the solder paste is present in a predetermined area in the metal honeycomb matrix.6. The method according to claim 1 , wherein the step c) is carried out by means of airflow purging or centrifugation.7. The method according to claim 6 , wherein the airflow purging is carried out by using compressed air.8. The method according to claim 6 , wherein the airflow purging is carried out for from 2 to 10 seconds under a gas pressure of from 0.2 to 0.6 MPa gauge pressure.9. The method according to claim 6 , wherein the centrifugation is carried out for from 2 to 10 seconds at a speed of from ...

METHOD FOR DEPOSITING A DESIRED SUPERALLOY COMPOSITION

Processes for depositing a desired superalloy composition are provided. An elongated core member (), such as made up of a wrought nickel-base alloy or a wrought cobalt-base alloy, may be drawn in connection with a wire drawing process. Elongated core member () includes at least one strengthening constituent having a reduced concentration to provide a desired level of ductility appropriate for the drawing of elongated core member (). A coating () is applied to elongated core member (). Coating () is configured to introduce a sufficient concentration of the strengthening constituent to form the desired superalloy composition when the coating and the elongated core member are melted together. This melting may occur during a welding process conducive to depositing the desired superalloy composition. The welding process may be performed in the context of repairing, rebuilding, and manufacturing superalloy components, such as for a gas turbine engine. 1. A method for depositing a desired superalloy composition , the method comprising:drawing an elongated core member comprising a wrought nickel-base alloy or a wrought cobalt-base alloy, the elongated core member comprising at least one strengthening constituent having a reduced concentration to provide a desired level of ductility appropriate for the drawing of the elongated core member; andapplying a coating to the elongated core member, the coating introducing a sufficient concentration of said at least one strengthening constituent to form the desired superalloy composition when the coating and the elongated core member are melted together.2. The method of claim 1 , wherein the at least one strengthening constituent is a gamma prime constituent.3. The method of claim 2 , wherein the at least one gamma prime strengthening constituent is titanium claim 2 , and the reduced concentration is in range from zero percent by weight to two percent by weight relative to a total weight of the elongated core member.4. The method of ...

NOVEL HIGH-ENTROPY ALLOY COMPOSITIONS

Novel high-entropy alloy (HEA) compositions are particularly suited to welding applications. The mixtures contain at least the elements nickel, manganese, cobalt, chromium, vanadium, molybdenum, and iron. The % weight of the constituents varies in accordance with the detailed description contained herein, with tolerances in the range of +/−2% and, in some cases, +/−1%. The mixture may also contain a small amount of aluminum with a tolerance in the range of +/−1% or, more preferably, +/−0.5% In accordance with the invention, the compositions above may be integrated into HEA welding products using cored wire and welding electrode manufacturing techniques, preferably starting with vacuum melted rolled alloys. One manufacturing process uses the compositions as an alloyed strip formed around the appropriate ground/crushed alloys to make commercially viable fabricated welding products. 1. A high-entropy alloy for welding applications , comprising: nickel,', 'manganese,', 'cobalt,', 'chromium,', 'vanadium,', 'molybdenum, and', 'iron., 'a mixture containing at least the following elements6. The high-entropy alloy of claim 1 , further including 0.11 to 0.12% aluminum with a tolerance in the range of +/−05%:12. The high-entropy alloy of claim 1 , wherein the welding product is fabricated using a cored-wire manufacturing process.13. The high-entropy alloy of claim 12 , wherein the cored-wire manufacturing process comprises an alloyed strip formed around the high-entropy alloy in ground or crushed form. This application claims the benefit of U.S. Provisional Patent Application Ser. No. 62/703,047, filed Jul. 25, 2019, the entire content of which is incorporated herein by reference.This invention relates generally to high-entropy alloys and, more particularly, to novel alloy compositions applicable to welding and other uses.There is no universally agreed-upon definition of a “high-entropy alloy” or HEA. Basically, a HEA is an alloy with multiple elements (typically 5 or more) ...

Ni-BASED ALLOY SOLID WIRE FOR WELDING AND Ni-BASED ALLOY WELD METAL

An Ni-based alloy solid wire for welding has a composition comprising specific amounts of Cr, Ti, Nb, C, S, Mn and Fe, where Mo+W, P, Si, Al, Ca, B, Mg, Zr, Co, O, H, and N are controlled to specific amounts, ([Ti]+[Nb])/[C] is 80 to 150, and the balance is Ni and inevitable impurities. [Ti], [Nb], and [C] represent the contents of Ti, Nb, and C (mass %), respectively. 2: A Ni-based alloy weld metal produced from the Ni-based alloy solid wire for welding according to . The present disclosure relates to a solid wire for welding and a Ni-based alloy weld metal that have a Ni-30Cr-based composition.Ni-based alloys have been used as weld metals for a pressure vessel and a steam generator in a light-water reactor for nuclear power generation. Overlay welding with Ni-based alloys have involved using Ni-15Cr-based or Ni-20Cr-based wire. As a measure against primary water stress corrosion cracking (PWSCC) generated in weld metal of Ni-15Cr-based or Ni-20Cr-based wire in pure water, which is primary cooling water, Ni-30Cr-based wire becomes more widely used. A weld metal of Ni-30Cr-based wire, however, tends to cause hot cracking at high temperature during welding compared with that of Ni-15Cr-based or Ni-20Cr-based wire.The types of hot cracking include solidification cracking in which a liquid phase remaining at the final solidification position before complete solidification of molten weld metal forms openings due to distortion caused by solidification shrinkage and thermal shrinkage; liquation cracking in which impurity element-rich crystal grain boundaries heated to high temperature with welding heat in a subsequent pass in multilayer welding liquefy and form openings; and ductility-dip cracking in which grain boundaries having low cohesive strength in the middle-temperature range not higher than the solidus temperature form openings in response to stress acting on the grain boundaries.A weld metal of Ni-30Cr-based wire has lower tensile strength than a weld metal of Ni ...

ARC WELDING METHOD AND WELDING WIRE

The present invention relates to a method for arc-welding a steel plate having a C content of 0.08-0.30% by mass, wherein the arc welding method comprises welding under a condition whereby X represented by formula (1) is 200 or less using a welding wire in which the total content of Cr and Ni thereof is 1.00% by mass or greater. (1): X=0.8×(300-279[C]-25[Si]-35[Mn]-49[Ni]-47[Cr]-61[Mo]) +0.2×(300-279[C]-25[Si]-35[Mn]-49[Ni]-47[Cr]-61[Mo]) (where [C], [Si], [Mn], [Ni], [Cr], [Mo], [C], [Si], [Mn], [Ni], [Cr], and [Mo]are defined in the specification). 1. An arc welding method for arc welding a steel sheet having a C content of from 0.08 to 0.30 mass % , the arc welding method comprising welding with a welding wire in which a total content of Cr and Ni is greater than or equal to 1.00 mass % , under conditions in which X is less than or equal to 200 , X being represented by Equation (1) below:{'br': None, 'sub': W', 'W', 'W', 'W', 'W', 'W', 'BM', 'BM', 'BM', 'BM', 'BM', 'BM, 'X=0.8×(300-279[C]-25[Si]-35[Mn]-49[Ni]-47[Cr]-61[Mo]) +0.2×(300-279[C]-25[Si]-35[Mn]-49[Ni]-47[Cr]-61[Mo]) \u2003\u2003(1)'}{'sub': W', 'W', 'W', 'W', 'W', 'W', 'BM', 'BM', 'BM', 'BM', 'BM', 'BM, 'where [C], [Si], [Mn], [Ni], [Cr], and [Mo]represent, respectively, contents in mass % of C, Si, Mn, Ni, Cr, and Mo in the welding wire, and [C], [Si], [Mn], [Ni], [Cr], and [Mo]represent, respectively, contents in mass % of C, Si, Mn, Ni, Cr, and Mo in the steel sheet.'}2. The arc welding method of claim 1 , wherein X is greater than or equal to 0.3. The arc welding method of claim 1 , wherein a carbon equivalent Ceqof the steel sheet is 0.30 to 0.70 claim 1 , and{'sub': W', 'BM', 'W, 'claim-text': {'br': None, 'sub': BM', 'BM', 'BM', 'BM', 'BM', 'BM', 'BM', 'BM, 'Ceq=[C]+[Mn]/6+([Cu]+[Ni])/15+([Cr]+[MO]+[V])/5 \u2003\u2003(2)'}, 'a carbon equivalent Ceqof the welding wire is 0.20 to 1.30, the carbon equivalent Ceqbeing represented by equation (2) below, and the carbon equivalent Ceqbeing represented ...

NICKEL-COBALT ALLOY

A Ni—Co alloy includes 30 to 65 wt % Ni, >0 to max. 10 wt % Fe, >12 to <35 wt % Co, 13 to 23 wt % Cr, 1 to 6 wt % Mo, 4 to 6 wt % Nb+Ta, >0 to <3 wt % Al, >0 to <2 wt % Ti, >0 to max. 0.1 wt % C, >0 to max. 0.03 wt % P, >0 to max. 0.01 wt % Mg, >0 to max. 0.02 wt % B, >0 to max. 0.1 wt % Zr, which fulfils the following requirements and criteria: a) 900° C.<γ′ solvus temperature<1030° C. with 3 at %5 (on the basis of the contents in at %). 1. A component of an aircraft turbine comprising an Ni—Co alloy with 30 to 65 wt % Ni , >0 to max. 10 wt % Fe , >12 to <35 wt % Co , 13 to 23 wt % Cr , 1 to 6 wt % Mo , 4 to 6 wt % Nb+Ta , >0 to <3 wt % Al , >0 to <2 wt % Ti , >0 to max. 0.1 wt % C , >0 to max. 0.03 wt % P , >0 to max. 0.01 wt % Mg , >0 to max. 0.02 wt % B , >0 to max. 0.1 wt % Zr , 0 to 0.5 wt % Cu , 0 to 0.015 wt % S , 0 to 1.0 wt % Mn , 0 to 1.0 wt % Si , 0 to 0.01 wt % Ca , 0 to 0.03 wt % N , 0 to 0.02 wt % 0 , 0 to 4 wt % V , and 0 to 4 wt % W , wherein the alloy satisfies the requirements and criteria listed below:a) 900° C.≤γ′-solvus temperature≤1030° C. at 3 at %≤Al+Ti (at %)≤5.6 at % as well as 11.5 at %≤Co≤35 at %;b) stable microstructure after 500 h of aging annealing at 800° C. and an Al/Ti ratio≥5 (on the basis of the contents in at %).2. The component according to claim 1 , wherein the alloy satisfies the requirement “945° C.≤γ′-solvus temperature≤1000° C.”.3. The component according to claim 1 , wherein the alloy has ΔT (δ-γ′) 80 K and Al+Ti≤4.7 at % as well as Co contents≥11.5 at % and ≤35 at %.4. The component according to claim 1 , wherein the alloy has a temperature interval between δ-solvus and γ′-solvus temperatures equal to or greater than 140 K and a Co content ≥15 at % and ≤35 at %.5. The component according to claim 1 , wherein the alloy has a Ti content of ≤0.8 at %.6. The component according to claim 1 , ...

NICKEL BRAZING MATERIAL HAVING EXCELLENT CORROSION RESISTANCE

Provided is a nickel brazing material having a melting temperature of 1000° C. or less and acid corrosion resistance. It includes 15.0 to 30.0 mass % of Cr, 6.0 to 18.0 mass % of Cu, 1.0 to 5.0 mass % of Mo. 5.0 to 7.0 mass % of P, 3.0 to 5.0 mass % of Si, and 0.1 to 1.5 mass % of Sn, the remainder being Ni and inevitable impurities. and the total of Si and P being 9.5 mass % to 11.0 mass %. It can include additional element selected from the group consisting of Co, Fe, Mn, C, B, Al, and Ti. The content of Co is 5.0 mass % or less, the content of Fe is 5.0 mass % or less, the content of Mn is 3.0 mass % or less, the total content of C, B, Al, and Ti is 0.5 mass % or less, and the total content of these elements is 10.0 mass % or less. 1. A nickel brazing material having a melting temperature of 1000° C. or less and also having acid corrosion resistance , wherein the nickel brazing material comprises 15.0 to 30.0 mass % of Cr. 6.0 to 18.0 mass % of Cu , 1.0 to 5.0 mass % of Mo. 5.0 to 7.0 mass % of P , and 3.0 to 5.0 mass % of Si , with the remainder being Ni and inevitable impurities , and the total of Si and P being 9.5 to 11.0 mass %.2. The nickel brazing material according to claim 1 , further comprising claim 1 , as an element that improves the wettability of the nickel brazing material on a stainless steel base material claim 1 , 0.1 to 1.5 mass % of Sn.3. The nickel brazing material according to claim 1 , further comprising claim 1 , as an element that does not adversely affect the characteristics of the nickel brazing material claim 1 , at least one element selected from the group consisting of Co claim 1 , Fe claim 1 , Mn claim 1 , C claim 1 , B claim 1 , Al claim 1 , and Ti claim 1 , wherein the content of Co is 5.0 mass % or less claim 1 , the content of Fe is 5.0 mass % or less claim 1 , the content of Mn is 3.0 mass % or less claim 1 , the total content of C claim 1 , B claim 1 , Al claim 1 , and Ti is 0.5 mass % or less claim 1 , and the total content ...

TUBULAR WELDING WIRE WITH A THINNER SHEATH FOR IMPROVED DEPOSITION RATES

The disclosure relates generally to welding and, more specifically, to tubular welding wires for arc welding processes, such as Gas Metal Arc Welding (GMAW), Flux Core Arc Welding (FCAW), and Submerged Arc Welding (SAW). The tubular welding wire includes a metal sheath surrounding a granular core. The metal sheath includes greater than approximately 0.6% manganese by weight and greater than approximately 0.05% silicon by weight. Further, the metal sheath has a thickness of between approximately 0.008 inches and approximately 0.02 inches. 1. A tubular welding wire , comprising:a metal sheath surrounding a granular core, wherein the metal sheath comprises greater than approximately 0.6% manganese by weight and greater than approximately 0.05% silicon by weight, and wherein the metal sheath has a thickness of between approximately 0.008 inches and approximately 0.02 inches.2. The tubular welding wire of claim 1 , wherein the metal sheath comprises between approximately 0.9% and approximately 1.1% manganese by weight and between approximately 0.1% and approximately 0.4% silicon by weight.3. The tubular welding wire of claim 2 , wherein the metal sheath comprises approximately 1% manganese by weight and approximately 0.3% silicon by weight.4. The tubular welding wire of claim 1 , wherein the thickness of the metal sheath is between approximately 0.008 inches and approximately 0.016 inches.5. The tubular welding wire of claim 1 , wherein the tubular welding wire has an outer diameter between approximately 0.03 inches and approximately 0.25 inches.6. The tubular welding wire of claim 5 , wherein the tubular welding wire has an outer diameter between approximately 0.04 inches and approximately 0.10 inches.7. The tubular welding wire of claim 1 , wherein the granular core comprises between approximately 10% and approximately 60% of the tubular welding wire by weight.8. The tubular welding wire of claim 7 , wherein the granular core comprises between approximately 20% and ...

Ni-Cr Based Alloy Brazing Material Containing Trace Amount of V

Disclosed is a Ni—Cr-based brazing alloy including, on the basis of mass %: 15%<Cr<30%; 3%<P<12%; 0%<Si<8%; 0.01%<C<0.06%; 0%≤Ti+Zr<0.1%; 0.01%<V<0.1%; 0%≤Al<0.01%; 0.005%<O<0.025%; 0.001%<N<0.050%; 0%≤Nb<0.1%; and the balance being Ni and incidental impurities. Inequality (1): 0.2≤0.24V %/C %≤1.0 is satisfied if the alloy contains no Nb, and Inequality (2): 0.2≤(0.24V %+0.13Nb %)/C %≤1.0 is satisfied if the alloy contains Nb. Also disclosed is an inexpensive Ni—Cr-based brazing alloy containing a trace amount of V for use in the production of stainless steel heat exchangers and other steel articles. The alloy has a low liquidus temperature and high corrosion resistance, and achieves high brazing strength.

METHOD OF FABRICATING A COMPONENT AND A MANUFACTURED COMPONENT

A method of fabricating a component and a fabricated component are disclosed. The method includes depositing a material to a component and manipulating the material to form a boundary region and a filler region for desired properties. The component includes the boundary region and the filler region, thereby having the desired properties. 1. A welded component , comprising:a boundary region positioned at least partially on a crack sensitive fusion boundary; anda filler region positioned at least partially on the boundary region;wherein the boundary region provides resistance to strain age cracking within the crack sensitive fusion boundary.2. The component of claim 1 , wherein one or more of the boundary region and the filler region includes a nickel-based superalloy having a composition claim 1 , by weight claim 1 , of about 14% chromium claim 1 , about 9.5% cobalt claim 1 , about 3.8% tungsten claim 1 , about 1.5% molybdenum claim 1 , about 4.9% titanium claim 1 , about 3.0% aluminum claim 1 , about 0.1% carbon claim 1 , about 0.01% boron claim 1 , about 2.8% tantalum claim 1 , and a balance of nickel.3. The component of claim 1 , wherein one or more of the boundary region and the filler region includes a nickel-based superalloy having a composition claim 1 , by weight claim 1 , of about 9.75% chromium claim 1 , about 7.5% cobalt claim 1 , about 3.5% titanium claim 1 , about 4.2% aluminum claim 1 , about 6.0% tungsten claim 1 , about 1.5% molybdenum claim 1 , about 4.8% tantalum claim 1 , about 0.08% carbon claim 1 , about 0.009% zirconium claim 1 , about 0.009% boron claim 1 , and a balance of nickel.4. The component of claim 1 , wherein one or more of the boundary region and the filler region includes a nickel-based superalloy having a composition claim 1 , by weight claim 1 , of about 7.5% cobalt claim 1 , about 7.0% chromium claim 1 , about 6.5% tantalum claim 1 , about 6.2% aluminum claim 1 , about 5.0% tungsten claim 1 , about 3.0% rhenium claim 1 , about 1.5 ...

Nickel-based brazing foil and process for brazing

A process for producing an amorphous ductile brazing foil is provided. According to one example embodiment, the method includes providing a molten mass, and rapidly solidifying the molten mass on a moving cooling surface with a cooling speed of more than approximately 10 5 ° C./sec to produce an amorphous ductile brazing foil. A process for joining two or more parts is also provided. The process includes inserting a brazing foil between two or more parts to be joined, wherein the parts to be joined have a higher melting temperature than that the brazing foil to form a solder joint and the brazing foil comprises an amorphous, ductile Ni-based brazing foil; heating the solder joint to a temperature above the liquidus temperature of the brazing foil to form a heated solder joint; and cooling the heated solder joint, thereby forming a brazed joint between the parts to be joined.

NICKEL-CHROMIUM ALLOY AND METHOD OF MAKING THE SAME

A nickel and chromium alloy having a combined wt. % of nickel and chromium of at least 97 wt. %, wherein the chromium accounts for 33 to 50 wt. % of the alloy. The alloy may be provided in strip form and has adequate ductility for the manufacture of various products, such as sheaths for flux cored welding electrodes. A method of making the alloy strip includes forming a powder charge that is 97 to 100 wt. % of nickel and chromium combined and the chromium accounts for 33 to 50 wt. % of the charge, roll compacting the powder charge to form a green strip, sintering the green strip to form a sintered strip, and cold rolling and annealing the sintered strip to form the alloy strip. 1. An alloy comprising nickel and chromium having a combined wt. % of nickel and chromium of at least 97 wt. % , wherein the chromium accounts for 33 to 50 wt. % of the alloy , wherein the alloy is provided in strip form.2. The alloy of claim 1 , wherein the strip has a tensile elongation of at least 30%.3. The alloy of claim 1 , wherein a roll compaction process is used to produce the strip.4. The alloy of claim 1 , wherein the chromium accounts for 35 to 50 wt. % of the alloy.5. The alloy of claim 1 , wherein the chromium accounts for 40 to 50 wt. % of the alloy.6. The alloy of claim 1 , wherein the alloy comprises less than 3 wt. % of Mn and Si combined.7. The alloy of claim 1 , wherein the nickel accounts for at least 47 wt. % of the alloy.8. A welding electrode sheath comprising the alloy of .9. An alloy comprising nickel and chromium having a combined wt. % of nickel and chromium of at least 99.8 wt. % claim 1 , wherein the chromium accounts for 33 to 50 wt. % of the alloy claim 1 , wherein the alloy is provided in strip form.10. The alloy of claim 9 , wherein the strip has a tensile elongation of at least 30%.11. The alloy of claim 9 , wherein a roll compaction process is used to produce the strip.12. The alloy of claim 9 , wherein the chromium accounts for 35 to 50 wt. % of the alloy. ...

EARTH-BORING TOOLS HAVING PARTICLE-MATRIX COMPOSITE BODIES AND METHODS FOR WELDING PARTICLE-MATRIX COMPOSITE BODIES

Methods for welding a particle-matrix composite body to another body and repairing particle-matrix composite bodies are disclosed. Additionally, earth-boring tools having a joint that includes an overlapping root portion and a weld groove having a face portion with a first bevel portion and a second bevel portion are disclosed. In some embodiments, a particle-matrix bit body of an earth-boring tool may be repaired by removing a damaged portion, heating the particle-matrix composite bit body, and forming a built-up metallic structure thereon. In other embodiments, a particle-matrix composite body may be welded to a metallic body by forming a joint, heating the particle-matrix composite body, melting a metallic filler material forming a weld bead and cooling the welded particle-matrix composite body, metallic filler material and metallic body at a controlled rate. 1. A method of joining a particle-matrix composite body of an earth-boring tool to a metallic body , the method comprising: forming a first bevel portion and a second bevel portion in a face portion of a weld groove; and', 'forming an overlapping interface at least proximate a root portion of the weld groove;, 'forming a joint between a particle-matrix composite body of the earth-boring tool and a metallic body of the earth-boring tool, comprisingheating a volume of the particle-matrix composite body within the weld groove to an elevated first temperature below the melting temperature of the matrix material of the particle-matrix composite body;heating at least a portion of the volume of the particle-matrix composite body within the weld groove with a welding torch to a second temperature greater than the melting temperature of the matrix material of the particle-matrix composite body;melting a metallic filler material;forming a weld bead to weld the metallic filler to the particle-matrix composite body and to the metallic body at the joint;providing the welded particle-matrix composite body, metallic filler ...

Mixed Oxide Materials for Helium Leak Tight, Oxidation Resistant and High Strength Joints Between High Temperature Engineering Materials

A high strength joint material. A material for a joint between a ceramic body and a metal body. A material for a joint between a ceramic body and a ceramic body.

SYSTEMS AND METHODS FOR WELDING WIRES FOR WELDING ZINC-COATED WORKPIECES

This disclosure relates generally to welding and, more specifically, to electrodes for arc welding, such as Gas Metal Arc Welding (GMAW) or Flux Core Arc Welding (FCAW) of zinc-coated workpieces. In an embodiment, a welding consumable for welding a zinc-coated steel workpiece includes a zinc (Zn) content between approximately 0.01 wt % and approximately 4 wt %, based on the weight of the welding consumable. It is presently recognized that intentionally including Zn in welding wires for welding galvanized workpieces unexpectedly and counterintuitively alleviates spatter and porosity problems that are caused by the Zn coating of the galvanized workpieces. 1. A welding consumable , comprising:between approximately 0.2 wt % and approximately 4 wt % zinc, based on the weight of the welding consumable, wherein the zinc is disposed within a granular core of the welding consumable, alloyed into a metallic portion of the welding consumable, or a combination thereof.2. The welding consumable of claim 1 , wherein the welding consumable comprises between approximately 0.4 wt % and approximately 0.6 wt % zinc claim 1 , based on the weight of the welding consumable.3. The welding consumable of claim 2 , wherein the welding consumable comprises between approximately 0.5 wt % and approximately 0.6 wt % zinc claim 2 , based on the weight of the welding consumable.4. The welding consumable of claim 1 , wherein less than approximately 15 wt % of the welding consumable is converted to spatter when welding a zinc-coated steel workpiece.5. The welding consumable of claim 1 , wherein the welding consumable is configured to form a weld deposit having a length porosity less than approximately 3% when welding a zinc-coated steel workpiece.6. The welding consumable of claim 1 , wherein the welding consumable is configured to form a weld deposit having an area porosity less than approximately 1.5% when welding a zinc-coated steel workpiece.7. The welding consumable of claim 1 , wherein the ...

STRUCTURAL BRAZE TAPE

A braze tape () useful with superalloy materials. In one embodiment, the tape includes a layer () containing superalloy powder () in a binder (), and a layer () containing boron and silicon free braze material powder () in a binder, joined together by a layer () of doubled-sided adhesive Teflon® tape (). 1. A braze tape comprising:a first layer comprising superalloy material;a second layer comprising braze material; anda third layer comprising flux material comprising fluoride.2. The braze tape of claim 1 , wherein the second layer further comprises superalloy material.3. The braze tape of claim 1 , wherein the braze material is boron and silicon free.4. The braze tape of claim 1 , wherein a chemical composition of the braze material is selected from the group consisting of Ni—Cr—Ti claim 1 , Ni—Zr—Ti claim 1 , and Ni—Cr—Zr—Ti.5. The braze tape of claim 1 , wherein the third layer comprises a double sided adhesive fluoropolymer tape disposed between the first and second layers.6. The braze tape of claim 5 , wherein the doubled-sided adhesive fluoropolymer tape comprises polytetrafluoroethylene.7. The braze tape of claim 5 , wherein the doubled-sided adhesive fluoropolymer tape comprises polyvinyltetrafluoride.8. The braze tape of claim 8 , wherein the first layer further comprises polyvinyltetrafluoride powder.9. A braze tape claim 8 , comprising:an alloy layer;a braze material layer; anda flux layer comprising fluoride disposed between the alloy layer and the braze material layer.10. The braze tape of claim 9 , further comprising adhesive between the flux layer and the alloy layer and between the flux layer and the braze material layer.11. The braze tape of claim 9 , wherein the alloy layer comprises an alloy powder and wherein the braze material layer comprises braze alloy powder.12. The braze tape of claim 9 , wherein the braze material layer comprises braze alloy powder and superalloy powder.13. The braze tape of claim 9 , further comprising double-sided ...

BRAZE GEL, BRAZING PROCESS, AND BRAZING ARTICLE

A braze gel includes a braze powder, a braze binder, and a viscosity reducer. The braze gel has a gel viscosity sufficiently low to permit dip coating of a component with the braze gel to apply a braze coating of the braze gel to the component. A brazing process includes applying the braze gel to a portion of a component. The brazing process also includes drying the braze gel to form a braze coating on the component to form a braze-coated component. A brazing article includes a component and a braze coating over a portion of the component. The component may have structural features having a spacing of less than about 5 mm and a depth of at least about 1 mm, which may be honeycomb cells. The component may be a turbine component. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. A process comprising:applying a braze gel having a gel viscosity to a portion of a component comprising an end of the component, the braze gel comprising a braze powder, a braze binder, and a viscosity reducer;drying the braze gel to form a braze coating on the portion of the component to form a braze-coated component comprising the component and the braze coating; andheating the braze coating to a brazing temperature to braze the end of the braze-coated component to a backing member;wherein the gel viscosity is lower than a paste viscosity of a braze paste comprising the braze powder and the braze binder with no viscosity reducer, the gel viscosity permitting dip coating of the component with the braze gel.8. The process of further comprising combining the braze powder claim 7 , the braze binder claim 7 , and the viscosity reducer to form the braze gel having the gel viscosity such that the viscosity reducer reduces the gel viscosity of the braze gel to permit dip coating of the component with the braze gel to apply the braze coating of the braze gel to the portion of the component.9. (canceled)10. The process of claim 9 , wherein the brazing temperature is in ...

Ignition device component produced by cold metal transfer process

The present invention relates to noble metal-containing components prepared by cold metal transfer (CMT) methods, along with methods of preparing such components by CMT. More especially, an advantageous method of preparing a platinum metal group metal or alloy containing ignition device component by CMT is provided.

OXIDATION RESISTANT NICKEL BRAZE PUTTY

Disclosed is a braze putty composition including a sacrificial binder, a first nickel alloy and a second nickel alloy, a method of making the putty, and a method for using this putty to repair castings. 1. A braze putty composition comprising a sacrificial binder , a first nickel alloy and a second nickel alloy.2. The braze putty composition of claim 1 , wherein the sacrificial binder comprises an acrylic polymer having a glass transition temperature below about 20° C.3. The braze putty composition of claim 1 , wherein the first nickel alloy comprises up to about 0.02 wt % of boron and the second nickel alloy comprises boron in an amount no greater than 1.0 wt %.4. The braze putty composition of claim 1 , wherein the first nickel alloy comprises about 4.75 wt %-10.5 wt % of chromium claim 1 , about 5.5 wt %-6.7 wt % of aluminum claim 1 , up to about 13 wt % cobalt claim 1 , about 3.75 wt %-9.0 wt % of tantalum claim 1 , about 1.3 wt %-2.25 wt % of molybdenum claim 1 , about 3.0 wt %-6.8 wt % of tungsten claim 1 , about 2.6 wt %-3.25 wt % of rhenium claim 1 , up to about 0.02 wt % of boron claim 1 , about 0.05 wt %-2.0 wt % of hafnium claim 1 , up to about 0.14 wt % of carbon claim 1 , up to about 0.35 wt % of zirconium claim 1 , and a balance of nickel and the second nickel alloy comprises about 21.25 wt %-22.75 wt % of chromium claim 1 , about 5.7 wt %-6.3 wt % of aluminum claim 1 , about 11.5 wt %-12.5 wt % of cobalt claim 1 , about 5.7 wt %-6.3 wt % of silicon claim 1 , boron in an amount no greater than 1.0 wt % or 0.45 wt %-0.55 wt % of boron as described above claim 1 , and a balance of nickel.5. The braze putty composition of claim 1 , wherein the first nickel alloy is present in an amount of 20 to 80 weight percent and the second nickel alloy is present in an amount of 20 to 80 weight percent relative to the total amount of the first nickel alloy and the second nickel alloy.6. The braze putty composition of claim 5 , wherein the first nickel alloy is present ...

Article and method for making an article

An article and a method for making shaped cooling holes in an article are provided. The method includes the steps of depositing a metal alloy powder to form an initial layer including at least one aperture, melting the metal alloy powder with a focused energy source to transform the powder layer to a sheet of metal alloy, sequentially depositing an additional layer of the metal alloy powder to form a layer including at least one aperture corresponding to the at least one aperture in the initial layer, melting the additional layer of the metal alloy powder with the focused energy source to increase the sheet thickness, and repeating the steps of sequentially depositing and melting the additional layers of metal alloy powder until a structure including at least one aperture having a predetermined profile is obtained. The structure is attached to a substrate to make the article.

Welding material for welding of superalloys

Welding material for welding of superalloys comprising boron with the range of 0.3-0.8 wt. % B, 0.2-0.8 wt. % C, 17-23 wt. % Cr, 0.35-10 wt. % Mo, 0.1-4.15 wt. % Nb with nickel or iron and impurities to balance for weld repair of engine components manufactured of precipitation hardening superalloys with high content of gamma prime phase at an ambient temperature.

PROCESS FOR JOINING TWO METAL PARTS BY BRAZE-WELDING

A process for joining two parts by braze-welding, including forming a joint, between two surfaces to be joined, and a fillet. The composition of the filler metal used to form the fillet is different from that used to form the joint, to provide the joint with a higher ductility. The method can, for example, be applied to production of high-pressure compressor guide-vane sectors for a turbomachine. 19-. (canceled)10. A method for joining two metal parts by brazing , comprising:forming, by a filler metal, a bonding joint between two bonding surfaces and a fillet,wherein the chemical composition of the filler metal for forming the fillet is different from that of the bonding joint, to have greater ductility.11. A method according to claim 10 , wherein the bonding joint is a capillary joint.12. A method according to claim 10 , wherein brazing temperature for the fillet is lower than liquidus temperature of the filler metal of the bonding joint.13. A method according to claim 10 , wherein the two metal parts are made of either a nickel-based or cobalt-based superalloy.14. A method according to claim 13 , wherein the filler metal for forming the bonding joint is either a nickel-based or cobalt-based alloy including at least one flux compound.15. A method according to claim 14 , wherein the flux compound is at least one element from among boron claim 14 , silicon claim 14 , and phosphorus.16. A method according to claim 10 , wherein the filler metal of the fillet is a copper-based alloy claim 10 , or CuMnNi930 claim 10 , or a manganese-based alloy claim 10 , or a precious-metal alloy.17. A method according to claim 10 , wherein one part of the two metal parts is a turbine engine compressor blade and the other part is a collar.18. A method according to claim 17 , wherein the joining forms a stator vane sector. The present invention relates to the brazing of parts made of a nickel-based or cobalt-based superalloy, that is to say made of a refractory alloy having a content by ...

Ni-Fe-Cr-Mo Alloy

The invention relates to an alloy comprising (in mass %) Ni 33-35%, Cr 26-28%, Mo 6-7%, Cu 0.5-1.5%, Mn 1.0-4%, Si max. 0.1%, Al 0.01-0.3%, C max. 0.01%, N 0.1-0.25%, B 0.001-0.004%, SE>0 to 1%, and Fe remainder, including unavoidable impurities.

Alloy powder for overlay welding, and weld overlay alloy member and engine valve obtained using the same

According the present invention, an alloy powder for overlay welding that prevents generation of gas defects in a weld overlay alloy in order to improve the toughness and wear resistance of the weld overlay alloy is provided. The alloy powder is an alloy powder for overlay welding on a steel surface containing nitrogen, which is characterized in that it contains 30% to 45% by mass of Mo, 10% to 30% by mass of Ni, 0.2% to 0.6% by mass of C, and 0.30% to 2.0% by mass of Al, with the balance made up of incidental impurities and Co.

DUCTILE BORON BEARING NICKEL BASED WELDING MATERIAL

A ductile boron bearing nickel based welding material which includes boron within the range of 0.4-0.6 wt. % B, carbon from a trace amount to 0.04 wt. % C, 17-23 wt. % Cr, 0.35-10 wt. % Mo, 0.1-4.15 wt. % Nb with nickel or iron and impurities to balance for manufacturing of welding and brazing wires, powders and foils used in the repair of various articles made of nickel, cobalt and iron based alloys. 1. A ductile boron bearing nickel based welding material comprised of the following elements in weight percentages:a) Boron: from about 0.4 to 0.6 wt. %b) Carbon: from a trace amount to about 0.04 wt. %c) Chromium: from about 20 to 23 wt. %d) Molybdenum from about 8 to 10 wt. %e) Niobium: from about 3.15 to 4.14 wt. %f) Nickel with impurities: to balance.2. The ductile boron bearing nickel based welding material as per further including the following elements in weight percentages:a) iron from about trace amount to 5 wt. %; andb) micro alloying elements selected from among titanium, tantalum, tungsten, silicon and manganese: from about a trace amount to a combined 1.5 wt. %.3. The ductile boron bearing nickel based welding material as per is wire for welding and brazing.4. The ductile boron bearing nickel based welding material as per is powder for welding and brazing.5. The ductile boron bearing nickel based welding material as per is a foil for brazing and diffusion bonding.6. The ductile boron bearing nickel based welding material as per is used for welding and brazing of a polycrystalline nickel claim 1 , cobalt and iron based alloys.7. The ductile boron bearing nickel based welding material as per is used for welding and brazing directionally solidified nickel claim 1 , cobalt and iron based alloys.8. The ductile boron bearing nickel based welding material as per is used for welding and brazing of single crystal nickel claim 1 , cobalt and iron based materials.9. The ductile boron bearing nickel based welding material as per is used for TIG brazing and welding of ...

Metal Carbide/Nitride Precipitation Control in Fusion Welding

Properties and performance of weld material between metals in a weldment is controlled by modifying one or more of the nitrogen content and the carbon content to produce carbide (e.g. MC-type), nitride and/or complex carbide/nitride (e.g. MX-type) type precipitates. Fusion welding includes (i) adjusting shield gas composition to increase nitrogen/carbon gas and nitride/carbide species, (ii) adjusting composition of nitrogen/carbon in materials that participate in molten welding processes, (iii) direct addition of nitrides/carbides (e.g. powder form), controlled addition of nitride/carbide forming elements (e.g. Ti, Al), or addition of elements that increase/impede solubility of nitrogen/carbon or nitride/carbide promoting elements (e.g. Mn), and (iv) other processes, such as use of fluxes and additive materials. Weld materials have improved resistance to different cracking mechanisms (e.g., hot cracking mechanisms and solid state cracking mechanisms) and improved tensile related mechanical properties. 18-. (canceled)9. A method of fusion welding , comprising:forming a region of molten material between a first metallic body and a second metallic body, wherein the molten material includes molten base metal from the first metallic body, molten base metal from the second metallic body, weld metal from a welding alloy, and, optionally, one or more molten additive material;modifying at least one of a nitrogen content of the molten material and a nitride content of the molten material;coalescing the molten material; andsolidifying the molten material to form a weld material,wherein the weld material joins the first metallic body to the second metallic body to form a weldment, andwherein the solidified weld material has a composition including 15 ppm to 120 ppm or 200 ppm to 1500 ppm nitrogen.10. The method of claim 9 , wherein a microstructure of the solidified weld material includes a plurality of precipitates claim 9 , wherein the plurality of precipitates include one or ...

Nickel-based alloy, use and method

The invention relates to a novel alloy which comprises the elements carbon (C), chromium (Cr), cobalt (Co), molybdenum (Mo), tungsten (W), titanium (Ti), aluminium (Al), boron (B), and zirconium (Zr), based on nickel, and which has a very low tendency to form cracks during welding.

BRAZE COMPOSITION AND PROCESS OF USING

A composition includes the constituents, in approximate weight percentages: Chromium 15-17; Silicon 2.5-3.5; Cobalt 6.0-8.0; Aluminum 1.0-2.0; Tantalum 1.5-2.5; Boron 1.5-2.5; Yttrium 0.015-0.025; Nickel balance; and incidental impurities. 2. The composition of claim 1 , wherein the composition is a braze composition.3. The composition of claim 2 , wherein the braze composition is configured to braze turbomachinery parts.4. The composition of claim 3 , wherein the turbomachinery parts include micromixer tubes within plate apertures.8. A process of using the braze material of claim 6 , the process comprising:applying the braze material to a joint between turbomachine components;heating the braze material to form a molten braze material, to cause the braze material to flow into the joint; andallowing the molten braze material to cool, solidify, and join the turbomachine components.9. The process according to claim 8 , wherein the turbomachine components include turbomachine components of a combustor assembly.10. The process according to claim 9 , wherein the turbomachine components of a combustor assembly include portions of a micromixer.11. The process according to claim 10 , wherein the portions of the micromixer include micromixer tubes within plate apertures.13. The braze material of claim 12 , wherein the braze composition is configured to braze turbomachinery parts.14. The braze material of claim 13 , wherein the turbomachinery parts include micromixer tubes within plate apertures. The disclosure relates generally to braze compositions for joining components. More particularly, this disclosure relates to braze compositions for joining turbine components, where the braze composition avoids formation of continuous centerline eutectic phase development, thus maintaining ductility of the braze joint.The pace of change and improvement in the realms of joining components, such as but not limited to turbine components for power generation, aviation, and other fields ...

BRAZE ALLOY COMPOSITIONS AND BRAZING METHODS FOR SUPERALLOYS

A multi-component braze filler alloy comprising at least 70% by weight MarM509A superalloy with the remainder MarM509B superalloy is diffusion brazed to a CM247 alloy base substrate, such as a gas turbine blade or vane. It is shown that generally higher braze temperatures lead to improved results including the possibility of re-welding such a brazed component, resulting in a re-repaired brazed component capable of continued commercial service. 1. A material for the braze repair of a nickel-base superalloy turbine component comprising a MarM509A/B mixture of no less than approximately 70% by weight of MarM509A base alloy and the balance comprising MarM509B braze alloy , including about 10%-15% by volume of a liquid binder to form a paste.2. A material as in wherein the nickel-base superalloy turbine component comprises CM247.3. A material as in claim 1 , wherein the nickel-base superalloy component is a turbine vane or blade.4. A method for brazing an Ni-base superalloy component comprising:placing the Ni-base superalloy component to be brazed and the brazing material into a brazing furnace, properly configured to perform the desired brazing process upon heating; andincreasing the furnace temperature to within about 25 deg. F of 1800 deg. F at a rate of approximately 28 deg. F per minute; andreducing the pressure within the furnace to less than about 0.005 Torr and hold for stabilization; andincreasing the furnace temperature to within about 12 deg. F of 2270 deg. F at a rate no greater than about 10 deg. F per min. and hold at this temperature for about 240 to 255 minutes for combined braze and diffusion cycle time while maintaining the pressure no greater than about 0.005 Torr; andvacuum cooling the furnace temperature to within about 25 deg. F of 1975 deg. F in a time no more than about 3 minutes; andrapid cooling to room temperature by back purging with inert gas; and,wherein the brazing material comprises a MarM509A/B mixture of no less than approximately 70% by ...

BRAZE ALLOY COMPOSITIONS AND BRAZING METHODS FOR SUPERALLOYS

A multi-component braze filler alloy comprising 60-70% by weight CM247 superalloy and BRB braze alloy is diffusion brazed to a CM247 alloy base substrate, such as a gas turbine blade or vane. The substrate/braze interface may be subsequently weld-repaired without de-melting and migrating the braze alloy from the interface. The weld zone and surrounding area are solidification crack resistant. After the alloy composition is brazed to the base substrate the component may be returned to service. Thereafter the component remains repairable by welding or re-brazing, if needed to correct future in-service defects. 1. A material for the braze repair of a nickel-base superalloy turbine component comprising a CM247/BRB mixture of CM247 base alloy in the range from approximately 60% to 70% by weight and the balance comprises BRB braze alloy.2. A material as in claim 1 , wherein the nickel-base superalloy turbine component comprises CM247.3. A material as in claim 1 , wherein the Ni-base superalloy component is a turbine vane or blade.4. A material as in claim 1 , wherein the CM247/BRB mixture comprises about 80% of CM247 base alloy by weight and the balance comprises the BRB braze alloy wherein the components brazed with the material are not subjected to temperatures exceeding about 2270 deg. F. during the brazing process.5. A material as in claim 4 , wherein the nickel-base superalloy turbine component comprises CM247.6. A material as in claim 4 , wherein the Ni-base superalloy component is a turbine vane or blade.7. A method for brazing a Ni-base superalloy component comprising:placing the Ni-base superalloy component to be brazed and the brazing material into a brazing furnace, properly configured to perform the desired brazing process upon heating; andincreasing the furnace temperature to within about 25 deg. F. of 1800 deg. F. at a rate of approximately 28 deg. F. per minute; andreducing the pressure within the furnace to less than about 0.005 Torr and hold for ...

System and Method for Producing Chemicals at High Temperature

A system for producing chemicals, such as, ethylene or gasoline, at high temperature (above 1100 degrees C.) having a feedstock source. The system includes a chemical conversion portion connected with the feedstock source to receive feedstock and convert the feedstock to ethylene or gasoline. The conversion portion includes a coil array and a furnace that heats the feedstock to temperatures in excess of 1100° C. or 1200° C. or even 1250° C. or even 1300° C. or even 1400° C. A method for producing chemicals, such as ethylene or gasoline, at high temperature. 1. A method for producing ethylene or gasoline comprising the steps of:flowing feedstock from a feedstock source to a chemical conversion portion connected with the feedstock source to receive feedstock and convert the feedstock to ethylene or gasoline, the conversion portion including a coil array and a furnace that heats the feedstock to temperatures in excess of 1100° C., the coil array having a plurality of coils, each coil having a right top portion made of super alloy that connects with the source to receive feedstock, a right oxidation protected tungsten coupling that is attached outside the furnace to the right top portion and forms a helium gas tight seal with the right top portion, a right bottom portion made of silicon carbide that is attached outside the furnace to the right oxidation protected tungsten coupling and forms a helium gas tight seal with the right oxidation protected tungsten coupling, a base made of silicon carbide that is attached to the right bottom portion and forms a helium gas tight seal with the right bottom portion, a left bottom portion made of silicon carbide that is attached to the base and forms a helium gas tight seal with the base, a left oxidation protected tungsten coupling that is attached outside the furnace to the left bottom portion and forms a helium gas tight seal with the left bottom portion, and a left top portion made of super alloy that is attached to the left ...

METAL CHEMISTRY FOR IMPROVED WELDABILITY OF SUPER ALLOYS

A metal chemistry includes an amount of chromium weight of between about 9.0% and about 16% by weight, an amount of cobalt of between about 7.0% and about 14% by weight, an amount of molybdenum of between about 10% and about 20% by weight, an amount of iron of between about 1.0% and about 5.0% by weight, an amount of aluminum of between about 0.05% and about 0.75% by weight, an amount of titanium of between about 0.5% and about 2.0% by weight, an amount of manganese not to exceed about 0.8% by weight, an amount of carbon of between about 0.02% and about 0.10% by weight, an amount of a titanium+aluminum alloy of between about 0.55% and about 2.75% by weight, and an amount of nickel. 1. A metal chemistry comprising:an amount of chromium of between about 9.0 and about 16% by weight;an amount of cobalt by weight of between about 7.0% and about 14% by weight;an amount of molybdenum of between about 10% and about 20% by weight;an amount of iron of between about 1.0% and about 5.0% by weight;an amount of aluminum of between about 0.05% and about 0.75% by weight;an amount of titanium of between about 0.5% and about 2.0% by weight;an amount of manganese not to exceed about 0.8% by weight;an amount of carbon of between 0.02% and about 0.10% by weight;an amount of a titanium+aluminum alloy of between about 0.55% and about 2.75% by weight; andan amount of nickel.2. The metal chemistry according to claim 1 , wherein the amount of chromium is between about 11% and about 14% by weight.3. The metal chemistry according to claim 2 , wherein the amount of chromium is about 12.5% by weight.4. The metal chemistry according to claim 1 , wherein the amount of cobalt is between about 10% and about 11% by weight.5. The metal chemistry according to claim 4 , wherein the amount of cobalt is about 10.5% by weight.6. The metal chemistry according to claim 1 , wherein the amount of molybdenum is between about 14% and about 16% by weight.7. The metal chemistry according to claim 6 , wherein the ...

Method for Joining Ceramics to Ceramics or Ceramics to Metals, and Apparatus

An assembly including a ceramic body. The assembly comprises a tungsten coupling attached to the ceramic body with a first joint that forms a first helium tight seal between the ceramic body and the tungsten coupling and where the first helium tight seal maintains its integrity at a temperature over 400° C. The assembly includes a metal body attached to the tungsten coupling with a second joint that forms a second helium tight seal between the metal body and the tungsten coupling and where the second helium tight seal maintains its integrity at a temperature over 400° C. A method. A mixture. A coupling. 1. A method of forming an assembly comprising the steps of:forming a first joint between a ceramic body and a tungsten coupling to create a healing first helium tight seal between the tungsten coupling and the ceramic body where the first helium tight seal maintains its integrity at a temperature over 1100° C.; andforming a second joint between the tungsten coupling and a metal body to create a second helium tight seal between the tungsten coupling and the metal body where the second helium tight seal maintains its integrity at a temperature over 1100° C.2. An assembly comprising:a first ceramic body; anda second ceramic body attached to the first ceramic body with a first joint that forms a first helium tight seal between the first ceramic body and the second ceramic body and where the first helium tight seal maintains its integrity at a temperature over 1100° C.3. The assembly of wherein the first ceramic body and the second ceramic body are hollow and form a continuous channel extending through and inside the first ceramic body and the second ceramic body and the first helium tight seal.4. The assembly of wherein the first ceramic body is made of silicon carbide and the second ceramic body is made of either silicon carbide or 3:2 mullite.5. The assembly of wherein the first joint is made of between 30 wt % (weight percent or percent by mass) and 80 wt % claim 4 , ...

Welding Structure Member

There is provided a welding structure member excellent in corrosion resistance in an environment where high-concentration sulfuric acid condenses, the welding structure member including base material having a chemical composition containing, in mass percent, C≤0.05%, Si≤1.0%, Mn≤2.0%, P≤0.04%, S≤0.01%, Ni: 12.0 to 27.0%, Cr: 15.0% or more to less than 20.0%, Cu: more than 3 0% to 8.0% or less, Mo: more than 2.0% to 5.0% or less, Nb≤1.0%, Ti≤0.5%, Co≤0.5%, Sn≤0.1%, W≤5.0%, Zr≤1.0%, Al≤0.5%, N<0.05%, Ca≤0.01%, B≤0.01%, and REM≤0.01%, with the balance: Fe and unavoidable impurities, and the welding structure member including including weld metal having a chemical composition containing, in mass percent, C≤0.10%, Si≤0.50%, Mn≤3.5%, P≤0.03%, S≤0.03%, Cu≤0.50%, Ni: 51.0 to 69.0%, Cr: 14.5 to 23.0%, Mo: 6.0 to 17.0%, Al≤0.40%, Ti+Nb+Ta≤4.90%, Co≤2.5%, V≤0.35%, and W≤4.5%, with the balance: Fe and unavoidable impurities. 1. A welding structure member including an austenitic stainless steel joint , wherein the welding structure member comprises a base material and a weld metal , wherein , C: 0.05% or less;', 'Si: 1.0% or less;', 'Mn: 2.0% or less;', 'P: 0.04% or less;', 'S: 0.01% or less;', 'Ni: 12.0 to 27.0%;', 'Cr: 15.0% or more to less than 20.0%;', 'Cu: more than 3.0% to 8.0% or less;', 'Mo: more than 2.0% to 5.0% or less;', 'Nb: 0 to 1.0%;', 'Ti: 0 to 0.5%;', 'Co: 0 to 0.5%;', 'Sn: 0 to 0.1%;', 'W: 0 to 5.0%;', 'Zr: 0 to 1.0%;', 'Al: 0 to 0.5%;', 'N: less than 0.05%;', 'Ca: 0 to 0.01%;', 'B: 0 to 0.01%; and', 'rare earth metal: 0 to 0.01% in total,', 'with the balance being Fe and unavoidable impurities, and', 'the weld metal comprises has a chemical composition containing, in mass percent:', 'C: 0.10% or less;', 'Si: 0.50% or less;', 'Mn: 3.5% or less;', 'P: 0.03% or less;', 'S: 0.03% or less;', 'Cu: 0.50% or less;', 'Ni: 51.0% or more to 69.0% or less;', 'Cr: 14.5 to 23.0%;', 'Mo: 6.0 to 17.0%;', 'Al: 0.40% or less;', 'one or more elements selected from Nb, Ta, and Ti ...

PRECIPITATION STRENGTHENED NICKEL BASED WELDING MATERIAL FOR FUSION WELDING OF SUPERALLOYS

A precipitation strengthened nickel based welding material that comprises 5-15 wt. % Co, 5-25 wt. % Cr, 1-6 wt. % Al, 0.05-0.2 wt. % C, 0.015-0.4 wt. % B, 1-3 wt. % Si, chemical elements selected from among tungsten and molybdenum from about 1 to 20 wt. %, chemical elements selected from among titanium, zirconium, hafnium, tantalum and rhenium from about 1 to 18 wt. % and nickel with impurities to balance, wherein the boron content is inversely proportional to silicon content and decreases from about 0.3 wt. % to about 0.015 wt. % when silicon content increases from about 1 wt. % to about 3 wt. % produces sound high strength and high oxidation resistance crack free welds on precipitation strengthened superalloys and single crystal materials. 4. The method of precipitation strengthening nickel based welding material for fusion welding of superalloys of claim 3 , wherein the boron content is reduced proportionately from about 0.4 wt. % to about 0.1 wt. % with a proportionate increase in the silicon content from about 1 wt. % to about 3 wt. % such that the total boron and silicon content ranges from about 1.4 wt. % to 3.1 wt. %.5. The method according to claim 1 , wherein the precipitation strengthened nickel based welding material for fusion welding of superalloys produced is a welding powder.6. The method according to claim 1 , wherein the precipitation strengthened nickel based welding material for fusion welding of superalloys produced is a welding wire.7. The method according to claim 1 , wherein the precipitation strengthened nickel based welding material for fusion welding of superalloys produced is for use in a repair section of a turbine engine component.11. The precipitation strengthened nickel based welding material claimed in wherein the boron content reduced proportionately from about 0.4 wt. % to about 0.1 wt. % with a proportionate increase in the silicon content from about 1 wt. % to about 3 wt. % such that the total boron and silicon content ranges ...

WELD FILLER METAL FOR SUPERALLOYS AND METHODS OF MAKING

A method of making a weld filler metal for a superalloy for welding is disclosed. The method includes enclosing a welding rod in a first foil layer and sintering the welding rod and the first foil layer. Related processes and articles are also disclosed. 1. A method of making a weld filler metal for use in a welding process with a superalloy , the method comprising:enclosing a welding rod in a first foil layer; andsintering the welding rod and the first foil layer.2. The method of claim 1 , wherein the welding rod comprises MarM247 claim 1 , IN738 claim 1 , R80 claim 1 , IN939 claim 1 , R142 claim 1 , R195 claim 1 , H188 claim 1 , H25 claim 1 , FSX414 claim 1 , RN2 claim 1 , or GTD111.3. The method of claim 1 , wherein the first foil layer includes an adhesive layer.4. The method of claim 1 , wherein the first foil layer includes at least 1% of at least one of boron claim 1 , silicon claim 1 , and germanium.5. The method of claim 1 , wherein a composition of the weld filler metal includes between approximately 0.1% and approximately 2.0% of at least one of boron claim 1 , silicon claim 1 , and germanium.6. The method of claim 1 , wherein the sintering includes heating to between approximately 1038° C. to approximately 1204° C. for between approximately 2 minutes and approximately 10 minutes.7. The method of claim 1 , the method further comprising:enclosing the welding rod and the first foil layer, prior to the sintering, in at least a second foil layer.8. The method of claim 7 , wherein the second foil layer comprises a second layer having a composition the same as a composition of the first foil layer.9. The method of claim 7 , wherein the second foil layer comprises a second foil having a distinct composition from a composition of the first foil layer.10. The method of claim 9 , wherein the second foil layer includes an adhesive layer.11. The method of claim 9 , wherein the second foil layer includes at least 1% of at least one of boron claim 9 , silicon claim 9 , ...

Cu-Added Ni-Cr-Fe-Based Alloy Brazing Material

A Ni—Cr—Fe-based alloy brazing filler material to which Cu is added, and which has a low melting temperature, and is inexpensive and excellent in corrosion resistance and in strength, for use in manufacture of stainless-steel heat exchangers or the like, specifically, a Ni—Cr—Fe-based alloy brazing filler material, including, in mass %, Cr: 15 to 30%; Fe: 15 to 30%; Cu: 2.1 to 7.5%; P: 3 to 12%; and Si: 0 to 8%; and the balance being Ni and unavoidable impurities, wherein the total content of Cr and Fe is 30 to 54%, and the total content of P and Si is 7 to 14%. 1. A Ni—Cr—Fe-based alloy brazing filler material , comprising , in mass % ,Cr: 15 to 30Fe: 15 to 30%;Cu: 2.1 to 7.5%;P: 3 to 12%; andSi: 0 to 8%; andthe balance being Ni and unavoidable impurities,wherein the total content of Cr and Fe is 30 to 54%, and the total content of P and Si is 7 to 14%.2. The Ni—Cr—Fe-based alloy brazing filler material according to claim 1 , comprising:1% or less in total of at least one of B and C;5% or less in total of at least one of Mo, Co, Mn, and V; and/or2% or less in total of at least one of Sn, Zn, and Bi.3. The Ni—Cr—Fe-based alloy brazing filler material according to claim 1 , wherein the content of Cu is more than 2.5% and less than 6%.4. The Ni—Cr—Fe-based alloy brazing filler material according to claim 1 , wherein the total content of P+Si is more than 8% and less than 13%.5. The Ni—Cr—Fe-based alloy brazing filler material according to claim 1 , wherein the content of Cu is more than 3% and less than 6% claim 1 , and the total content of P+Si is more than 8% and less than 13% The present application is a continuation application of U.S. patent application Ser. No. 14/909,828 filed on Feb. 3, 2016, which is the United States national phase of International Application No. PCT/JP2014/069736 filed Jul. 25, 2014, which claims priority to Japanese Patent Application No. 2013-162961 filed on Aug. 6, 2013, and Japanese Patent Application No. 2014-123074 filed on Jun. 16, ...

LOW HEAT FLUX MEDIATED CLADDING OF SUPERALLOYS USING CORED FEED MATERIAL

Methods are disclosed for melting a cored feed material () using a low heat input process. The feed material may be a sheath () consisting essentially of pure nickel, nickel-chromium, or nickel-chromium-cobalt, containing a powdered core material () having a powdered alloy material () and powdered flux material () which, when melted, form a desired superalloy material. Flux materials for use with the methods are disclosed. The process may be a cold metal transfer process wherein the feed material is oscillated at greater than 130 oscillations per second. 1. A method of depositing an alloy , the method comprising:melting a cored feed material to form a melt pool using a heat input of 0.05 to 0.6 kJ/mm; andallowing the melt pool to cool and solidify to form deposited alloy.2. The method of claim 1 , further comprising:melting flux material contained within a core of the feed material to form slag over the melt pool;allowing the melt pool to cool and solidify under and with the slag; andremoving the solidified slag to reveal the deposited alloy.3. The method of claim 2 , further comprising:melting the cored feed material with a cold metal transfer process;wherein the melted flux material and slag are effective to quiet weld pool oscillations.4. The method of claim 3 , wherein the cored feed material is oscillated at greater than 130 oscillations per second5. The method of claim 2 , further comprising:selecting the feed material to comprise a sheath containing a powdered core material, the powdered core material comprising a powdered alloy material and a powdered flux material, the sheath consisting essentially of pure nickel, nickel-chromium, or nickel-chromium-cobalt; wherein:the powdered core material comprises constituents that complement the sheath to form the deposited alloy as a desired superalloy material when the sheath and powdered core material are melted together.6. The method of claim 5 , wherein the cored feed material is melted using a cold metal transfer ...

REPAIR OR REMANUFACTURE OF COMBUSTOR LINER PANELS WITH AN OXIDATION RESISTANT BRAZE

A method to fill a gap in a liner panel according to one disclosed non-limiting embodiment of the present disclosure includes: applying a nickel braze alloy composition onto a gap in a liner panel; subjecting the nickel braze alloy composition to a melt cycle; and subjecting the nickel braze alloy composition to a diffusion cycle after the melt cycle.

BRAZING METHOD FOR REINFORCING THE Z-NOTCH OF TiAl BLADES

The present invention relates to a method for arranging a reinforcement () on a TiAl component () of a turbomachine, the reinforcement being formed by a reinforcing molding, which is applied to the TiAl component () by means of brazing, a nickel-base alloy with the chemical composition 7.5% to 22.5% by weight Cr, 0.5% to 7% by weight B, remainder Ni, being used as the brazing filler metal. 1. A method for arranging a reinforcement on a TiAl component of a turbomachine , wherein the method comprises applying to the TiAl component a reinforcement in the form of reinforcing molding by brazing , using as brazing filler metal a nickel-base alloy which comprises , based on a total weight of the alloy , from 7.5% to 22.5% by weight Cr and from 0.5% to 7% by weight B , remainder Ni and unavoidable impurities.2. The method of claim 1 , wherein the nickel-base alloy comprises from 10% to 20% by weight Cr and from 2% to 5% by weight B.3. The method of claim 2 , wherein the nickel-base alloy comprises from 12.5% to 17.5% by weight Cr.4. The method of claim 2 , wherein the nickel-base alloy comprises from 3% to 4% by weight B.5. The method of claim 3 , wherein the nickel-base alloy comprises from 3% to 4% by weight B.6. The method of claim 4 , wherein the nickel-base alloy comprises about 3.5% by weight B.7. The method of claim 3 , wherein the nickel-base alloy comprises about 15% by weight Cr.8. The method of claim 1 , wherein the reinforcing molding is formed from a metallic material.9. The method of claim 8 , wherein the reinforcing molding is formed from a Co base alloy.10. The method of claim 9 , wherein the Co-base alloy is a Co—Cr alloy which comprises more than 25% by weight Cr claim 9 , based on a total weight of the alloy.11. The method of claim 10 , wherein the Co-base alloy comprises claim 10 , based on a total weight of the alloy claim 10 , one or more of from 4% to 20% by weight W claim 10 , 1% to 3% by weight C claim 10 , 0% to 1.5% by weight Si claim 10 , 0% to 3 ...

MAGNETIC NICKEL BASE TERNARY BRAZING MATERIAL AND METHOD OF APPLICATION

A ternary magnetic braze alloy and method for applying the braze alloy in areas having limited access. The magnetic braze alloy is a nickel-based braze alloy from the perminvar region of the Ni, Fe, Co phase diagram. The braze alloy includes, by weight percent 8-45% Fe, 0-78% Co, 2.0-4.0% of an element selected from the group consisting of B and Si and combinations thereof, and the balance Ni. The nickel-based braze alloy is characterized by a brazing temperature in the range of 1850-2100° F. The nickel-based braze alloy is magnetic below its Curie temperature. 1. A ternary braze alloy , comprising: about 8-45% Fe,', '0 to about 78% Co,', 'about 0.5-5.0% of an element selected from the group consisting of boron (B) and silicon (Si) and combinations thereof;', 'the balance Ni,, 'a nickel-based braze alloy from the perminvar region of the nickel (Ni), iron (Fe), cobalt (Co) phase diagram, the braze alloy comprising, by weight percent'}wherein the nickel-based braze alloy is characterized by a brazing temperature in the range of 1850-2100° F., andwherein the nickel-based braze alloy is magnetic below its Curie temperature.2. The ternary braze alloy of further including about 0.01-0.10% aluminum (Al).3. The ternary braze alloy of further including about 0.01-0.10% titanium (Ti).4. The ternary braze alloy of further including about 6-13% chromium (Cr).5. The ternary braze alloy of wherein the element selected from the group consisting of B and Si and combinations thereof are included in the range of about 2.0-4.0%.6. The ternary braze alloy of wherein the element selected from the group consisting of B and Si and combinations thereof are included in the range of about 2.75-3.75%.7. The ternary braze alloy of wherein the braze alloy is characterized by wettability sufficient to flow into porosity having a size of 0.001 inches and larger.8. The ternary braze alloy of wherein the braze alloy is a foil.9. The ternary braze alloy of wherein the foil has a thickness of about 0 ...

NI-BASED ALLOY FLUX-CORED WIRE

A Ni-based alloy flux-cored wire includes the contents of Mn and Nb that are adjusted so that, from the wire, it is possible to obtain a weld metal having an excellent bead shape, good arc stability, spattering inhibition effect, good strength, good defect resistance, and good crack resistance. The Ni-based alloy flux-cored wire produces a weld metal having an excellent bead shape in multiple position welding of Ni-based alloy, 9% Ni steel, and high corrosion-resistance austenitic stainless steel, and an effect of producing a weld metal having good strength, defect resistance, and crack resistance. 1. A Ni-based alloy flux-cored wire having a Ni-based alloy sheath having a flux therein , wherein a total wire composition including a sheath component and a flux component provided in the sheath comprises , with respect to the total amount of the entire flux-cored wire , C is present in an amount of 0.1 wt % or less , 0.01 to 0.5 wt % of Si , 0.01 to 3.0 wt % of Mn , 15.0 to 22.0 wt % of Cr , Nb is present in an amount up to 2.9 wt % , 5.0 to 10.0 wt % of Mo , 3.0 to 9.0 wt % of Fe , Ni as the balance , and unavoidable impurities ,{'sub': '2', 'wherein SiOis included in an amount of 0.5 to 3.0 wt %,'}{'sub': 2', '2, 'at least one oxide of NaO, KO, MgO, and CaO is included in an amount of 0.1 to 3.0 wt %,'}{'sub': 2', '3', '2', '2, 'at least one oxide of AlO, TiO, and ZrOis included in an amount of 5.0 to 12.0 wt %, and'}the composition satisfies the following:{'sub': 2', '2', '2', '3', '2', '2', '2, '0.1 NaO+{KO+0.5 (MgO+AlO) }/{CaO+1.6 (TiO+SiO)+0.2 (ZrO)}<0.5; and'}0.01 wt % Mn≤Nb wt % ≤(0.01 wt % Mn)+3.3.2. The flux-cored wire of claim 1 , wherein the flux component further comprises MnO present in an amount of 0.1 wt % or less and a fluorine compound in an amount of 0.1 to 1.5 wt % in terms of F.3. A Ni-based alloy flux-cored wire having an Ni-based alloy sheath filled with a flux claim 1 , wherein a deposited metal obtained from the flux-cored wire has a ...

Nickel-based brazing foil, method for producing a brazing foil, object with a brazing seam and brazing method

An amorphous, ductile brazing foil which substantially consists of Ni Bal Cr a B b ,P c Si d , wherein 21 atomic %≦a≦28 atomic %; 0.5 atomic %≦b≦7 atomic %; 4 atomic %≦c≦12 atomic %; 2 atomic %≦d≦10 atomic %; incidental impurities≦1.0% by weight; balance Ni, wherein a/c≧2, is provided.

BRAZING Ni-BASE AMORPHOUS ALLOY RIBBON AND STAINLESS STEEL BONDED BODY USING SAME

The present invention is intended to modify a composition of a typical brazing Ni-base amorphous alloy ribbon to reduce clogging of a casting nozzle and embrittlement in manufacturing of the ribbon, thereby improving workability and improving corrosion resistance and bonding strength of a stainless steel bonded body used for a heat exchanger etc. 1. A brazing Ni-base amorphous alloy ribbon having a composition represented by a composition formula: NiCrPSiBCNwhere in units of mass % , 22.00≦d≦29.00 , 4.00≦x≦8.00 , 1.00≦y≦7.00 , 0 Подробнее

BRAZE ALLOY COMPOSITIONS AND BRAZING METHODS FOR SUPERALLOYS

A multi-component braze filler alloy comprising 60-70% by weight CM247 superalloy and BRB braze alloy is diffusion brazed to a CM247 alloy base substrate, such as a gas turbine blade or vane. The substrate/braze interface may be subsequently weld-repaired without de-melting and migrating the braze alloy from the interface. The weld zone and surrounding area are solidification crack resistant. After the alloy composition is brazed to the base substrate the component may be returned to service. Thereafter the component remains repairable by welding or re-brazing, if needed to correct future in-service defects. 1. A material for the braze repair of a nickel-base superalloy turbine component comprising a CM247/BRB mixture of CM247 base alloy in the range from approximately 60% to 70% by weight and the balance comprises BRB braze alloy.2. A material as in claim 1 , wherein the nickel-base superalloy turbine component comprises CM247.3. A material as in claim 1 , wherein the Ni-base superalloy component is a turbine vane or blade.4. A material as in claim 1 , wherein the CM247/BRB mixture comprises about 80% of CM247 base alloy by weight and the balance comprises the BRB braze alloy wherein the components brazed with the material are not subjected to temperatures exceeding about 2270 deg. F. during the brazing process.5. A material as in claim 4 , wherein the nickel-base superalloy turbine component comprises CM247.6. A material as in claim 4 , wherein the Ni-base superalloy component is a turbine vane or blade.7. An article of manufacture comprising a Ni-base superalloy component wherein the Ni-base superalloy component has a portion thereof repaired by brazing with a brazing material claim 4 , wherein the brazing material comprises a mixture of CM247 base alloy in the range from about 60% to about 70% by weight and the balance comprising a BRB braze alloy.8. An article of manufacture as in claim 7 , wherein the nickel-base superalloy turbine component comprises CM247.9. ...

Nickel-chromium-phosphorous brazing alloys

Disclosed is the semi-amorphous, ductile brazing foil with composition consisting essentially of Ni bal Cr a B b P c Si d Mo e Fe f with approximately 24 atomic percent≦a≦approximately 31 atomic percent; b≦approximately 3 atomic percent; approximately 9 atomic percent≦c≦approximately 11 atomic percent; approximately 2 atomic percent≦d≦approximately 4 atomic percent; e≦approximately 2 atomic percent; f≦approximately 1 atomic percent; and the balance being Ni and other impurities; where b+c+d<approximately 16 atomic percent.

METHOD, BRAZED ARTICLE, AND BRAZING ASSEMBLY

A method includes heating a brazing material in a braze chamber of a first component to a braze temperature to melt the brazing material. The brazing material flows from the braze chamber, through at least one internal channel of the first component, and into a braze gap between the first component and a second component to braze the first component to the second component. A brazed article includes a first component having a braze chamber and at least one internal channel extending from the braze chamber to an external surface, a second component having at least one braze surface separated from the external surface of the first component by a braze gap, and a braze material in the braze gap. A braze assembly includes a first component, a second component, and a brazing material in the braze chamber. 1. A method comprising:heating a brazing material in a braze chamber of a first component to a braze temperature to melt the brazing material such that the brazing material flows from the braze chamber, through at least one internal channel of the first component, and into a braze gap between the first component and a second component to braze the first component to the second component.2. The method of further comprising positioning the first component in an aperture of the second component to provide the braze gap prior to the heating.3. The method of further comprising tack welding the first component to the second component prior to heating the brazing material in the braze chamber.4. The method of claim 1 , wherein the braze gap has a width in the range of about 10 μm to about 100 μm (about 0.4 mil to about 4.0 mil) such that the brazing material flows by capillary action in the braze gap.5. The method of claim 1 , wherein the heating comprises induction heating the first component.6. The method of claim 1 , wherein the heating comprises heating the brazing material claim 1 , the first component claim 1 , and the second component in a vacuum furnace.7. The method ...

METHOD FOR TREATING A COMPONENT AND HETEROGENEOUS COMPOSITION

A method for treating a component and a heterogeneous composition are provided. The method includes the steps of brazing the component with a heterogeneous composition. The heterogeneous composition includes a braze material and a ceramic additive. The braze material and the ceramic additive are intermixed with one another as distinct phases. The heterogeneous composition may include, but not be limited to, a braze material and a silicon carbide. The braze material includes a braze filler. The silicon carbide has a configuration including, but not limited to, fibers, powders, and combinations thereof. 1. A method for treating a component comprising the steps of:brazing the component with a heterogeneous composition, the heterogeneous composition comprising a braze material and a ceramic additive,wherein the braze material and the ceramic additive are intermixed with one another as distinct phases.2. The method according to claim 1 , wherein the component comprises a superalloy.3. The method according to claim 2 , wherein the superalloy comprises a hard-to-weld (HTW) superalloy material selected from the group consisting of nickel-based superalloy claim 2 , cobalt-based superalloy claim 2 , iron-based superalloy claim 2 , titanium-based superalloy and combinations thereof.4. The method according to claim 1 , wherein the component is a turbine component selected from the group consisting of at least one of blades claim 1 , buckets claim 1 , vanes claim 1 , nozzles claim 1 , shrouds claim 1 , combustor liners claim 1 , and transition ducts.5. The method according to claim 1 , wherein the heterogeneous composition has a configuration selected from the group consisting of powder claim 1 , paste claim 1 , foil claim 1 , rope claim 1 , tape claim 1 , and combinations thereof.6. The method according to claim 1 , wherein the braze material includes a braze filler.7. The method according to claim 6 , wherein the braze filler is selected from the group consisting of a) an ...

COMPOSITE WELDING WIRE AND METHOD OF MANUFACTURING

The present invention is a composite welding wire for fusion welding of components manufactured of superalloys. The composite weld wire includes a surface layer applied to the core wire in a green condition and bonded to the core wire. The surface layer includes alloying elements selected from among B and Si, the total bulk content of B and Si representing 0.5 to 4.0 wt. % of the composite welding wire. The boron and silicon alloying elements reduce the melting temperature and increase the solidification range of the weld pool, minimizing the incidence of weld cracking compared to welding without the coating. The green condition surface layer is comprised of more than 80 wt. % of the bulk content of the composite welding wire selected from the combination of B and Si. 1. A composite welding wire for fusion welding of components manufactured of superalloys , the composite weld wire comprises:a) a coated core wire configured for fusion welding of components manufactured of superalloys;b) the coating includes a surface layer applied to the core wire in a green condition and bonded to the core wire;c) the surface layer includes alloying elements which act to depress the melting point of a weld pool during welding, the alloying elements selected from a combination of B and Si in the surface layer, wherein the combination has a total bulk content of B and Si in representing 0.5 to 4.0 wt. % of the composite welding wire, wherein the boron and silicon alloying elements reduce the melting temperature and increase the solidification range of the weld pool and adapted to minimize the incidence of weld cracking compared to welding without the coating; andd) wherein the green condition surface layer comprises more than 80% wt. % of the bulk content of the composite wire of the alloying elements selected from the combination of B and Si.2. The composite welding wire claimed in wherein in a green condition the surface layer consists of at least 50 wt. % of a combination of B and ...

Soldering Structure and Process of Making the same

The invention discloses a soldering structure and process of making the same. The soldering structure comprises: a solder, a Sn—Co—Fe intermetallic compound having a thickness less than 10 μm and a diffusion barrier layer. The process of making the soldering structure is to react the solder containing Sn with an alloy consisting of 85˜95 wt % of Co and 5˜15 wt % of Fe at the temperature between 250 and 300° C. 1. A soldering structure , said soldering structure comprising: a solder , a diffusion barrier layer and a Sn—Co—Fe intermetallic compound between the solder and the diffusion barrier layer , wherein the Sn—Co—Fe intermetallic compound having a thickness less than 10 μm.2. The soldering structure according to claim 1 , wherein the solder is a lead free solder which is selected from the group consisting of Sn metal and Sn alloys.3. The soldering structure according to claim 1 , wherein the diffusion barrier layer is a Co—Fe alloy consisting of 85˜95wt % of Co and 5˜15 wt % of Fe.4. The soldering structure according to claim 3 , wherein the Co—Fe alloy consisting of 90 wt % of Co and 10 wt % of Fe.5. The soldering structure according to claim 1 , wherein the Sn—Co—Fe intermetallic compound is (Co claim 1 ,Fe)Sn.6. The soldering structure according to claim 1 , being part of an integrated circuit.7. The soldering structure according to claim 1 , being part of a liquid crystal display.8. The soldering structure according to claim 1 , being part of a printed circuit board.9. The soldering structure according to claim 1 , being part of a light-emitting diode device.10. The soldering structure according to claim 1 , being part of a portable communication device.11. The soldering structure according to claim 1 , being part of a semiconductor.12. A process for making the soldering structure according to claim 1 , said process comprising:providing a solder which is selected from the group consisting of Sn metal and Sn alloys;providing a diffusion barrier layer which is ...

WELD FILLER FOR SUPERALLOYS

A weld filler metal for a superalloy for welding is disclosed. The weld filler metal includes a preformed article that contains a first material with a melting point of approximately 2300 to 2500° F., and a second material with a melting point of approximately 1800 to 2200° F., wherein a ratio of the first material and the second material is variable. Related processes and articles are also disclosed. 1. A weld filler metal for a superalloy for welding , the weld filler metal comprising:a preformed article including:a first material with a melting point of approximately 2300 to 2500° F.; anda second material with a melting point of approximately 1800 to 2200° F., wherein a ratio of the first material and the second material is variable.2. The weld filler metal of claim 1 , wherein at least one of the first and second materials includes at least one of a cobalt based system and a nickel based system.3. The weld filler metal of claim 1 , wherein the ratio of the first material and the second material is chosen based on at least one of: a material content of the superalloy and a melting point of the superalloy being welded.4. The weld filler metal of claim 3 , wherein the first material includes a material chosen from a group comprising: a list of materials in Table 1.5. The weld filler metal of claim 3 , wherein the second material includes a material chosen from a group comprising: a list of materials in Table 2.6. The weld filler metal of claim 1 , wherein a shape of the preformed article comprises a wire shape.7. The weld filler metal of claim 1 , wherein a shape of the preformed article comprises a shape matching an area of the superalloy to be welded.8. A method of welding a superalloy claim 1 , the method comprising:applying a preformed article to an area of the superalloy, the preformed article including: a first material with a melting point of approximately 2300 to 2500° F.; and a second material with a melting point of approximately 1800 to 2200° F., wherein ...

Cu-Added Ni-Cr-Fe-Based Alloy Brazing Material

There is provided a Ni—Cr—Fe-based alloy brazing filler material to which Cu is added, and which has a low melting temperature, and is inexpensive and excellent in corrosion resistance and in strength, for use in manufacture of stainless-steel heat exchangers or the like, specifically, a Ni—Cr—Fe-based alloy brazing filler material, including, in mass %, Cr: 15 to 30%; Fe: 15 to 30%; Cu: 2.1 to 7.5%; P: 3 to 12%; and Si: 0 to 8%; and the balance being Ni and unavoidable impurities, wherein the total content of Cr and Fe is 30 to 54%, and the total content of P and Si is 7 to 14%. 1. A Ni—Cr—Fe-based alloy brazing filler material , comprising , in mass % ,Cr: 15 to 30%;Fe: 15 to 30%;Cu: 2.1 to 7.5%;P: 3 to 12%; andSi: 0 to 8%; andthe balance being Ni and unavoidable impurities,wherein the total content of Cr and Fe is 30 to 54%, and the total content of P and Si is 7 to 14%.2. The Ni—Cr—Fe-based alloy brazing filler material according to claim 1 , comprising:1% or less in total of at least one of B and C;5% or less in total of at least one of Mo, Co, Mn, and V; and/or2% or less in total of at least one of Sn, Zn, and Bi.3. The Ni—Cr—Fe-based alloy brazing filler material according to claim 1 , wherein the content of Cu is more than 2.5% and less than 6%.4. The Ni—Cr—Fe-based alloy brazing filler material according to claim 1 , wherein the total content of P+Si is more than 8% and less than 13%.5. The Ni—Cr—Fe-based alloy brazing filler material according to claim 1 , wherein the content of Cu is more than 3% and less than 6% claim 1 , and the total content of P+Si is more than 8% and less than 13%. The present application claims the benefit of priority from Japanese Patent Application No. 2013-162961 filed on Aug. 6, 2013, and Japanese Patent Application No. 2014-123074 filed on Jun. 16, 2014, the entire disclosures of which are incorporated herein by reference.1. Field of the InventionThe present invention relates to a Ni—Cr—Fe-based alloy brazing filler material to ...

SUPERALLOY COMPONENT BRAZE REPAIR WITH ISOSTATIC SOLUTION TREATMENT

A method of braze repair for a superalloy material component. Following a brazing operation on the superalloy material, the component is subjected to an isostatic solution treatment, followed by a rapid cool down to ambient temperature under pressure The conditions of the isostatic solution treatment combined with the cool down at pressure function to both reduce porosity in the component and to solution treat the superalloy material, thereby optimizing superalloy properties without reintroducing porosity in the braze. 1. A method comprising:applying a braze material to a superalloy component at a brazing temperature;holding the component at a temperature below the brazing temperature at a pressure above ambient for a time effective to reduce porosity in the component and to place a target constituent of the superalloy material into solid solution, andrapidly cooling the component while maintaining the pressure above ambient.2. The method of claim 1 , further comprising applying the braze material consisting essentially of 15-25% Cr; 15-25% Ti claim 1 , balance Ni.3. The method of claim 1 , further comprising applying the braze material consisting essentially of 15-25% Cr; 15-25% Zr; balance Ni.4. The method of claim 1 , further comprising applying the braze material consisting essentially of 15-25% Cr claim 1 , 15-25% Hf; balance Ni5. The method of claim 1 , further comprising applying the braze material consisting essentially of 35-25% Cr; 17-37% (Ti+Zr+Hf) claim 1 , balance Ni.6. The method of claim 1 , further comprising:applying a boron free braze material at a brazing temperature of 1,100-1,250° C. in vacuum;isostatic solution treating the component at below the brazing temperature for 2-4 hours at a pressure of 10-25 ksi;fast cooling the component at a minimum of 25° C./min to ambient while maintaining the pressure of 10-25 ksi; andreleasing the pressure to ambient7. The method of claim 6 , further comprising:primary age treating the component at 1,080° C. ...

ALLOY, WELDED ARTICLE AND WELDING PROCESS

An alloy is disclosed, including, by weight, about 13% to about 17% chromium, about 16% to about 20% molybdenum, about 1.5% to about 4% silicon, about 0.7% to about 2% boron, about 0.9% to about 2% aluminum, about 23% to about 27% nickel, about 0.8% to about 1.2% tantalum, and a balance of cobalt. The alloy includes a reduced occurrence of molybdenum silicide Laves phase relative to T800. A welded article is disclosed, including an article and a weld filler deposit joined to the article. The weld filler deposit includes a weld filler material including the alloy. A welding process is disclosed, including applying the weld filler material to the article and forming the weld filler deposit. 1. An alloy , comprising , by weight:about 13% to about 17% chromium;about 16% to about 20% molybdenum;about 1.5% to about 4% silicon;about 0.7% to about 2% boron;about 0.9% to about 2% aluminum;about 23% to about 27% nickel;about 0.8% to about 1.2% tantalum; anda balance of cobalt;wherein the alloy includes a reduced occurrence of molybdenum silicide Laves phase relative to T800.2. The alloy of claim 1 , further comprising claim 1 , by weight claim 1 , less than about 2.5% iron.3. The alloy of claim 1 , further comprising claim 1 , by weight claim 1 , less than about 2.5% incidental impurities.4. The alloy of claim 1 , wherein the alloy comprises claim 1 , by weight:about 15% chromium;about 18% molybdenum;about 2.5% silicon;about 1.2% boron;about 1.2% aluminum;about 25% nickel; andabout 1% tantalum.5. The alloy of claim 1 , consisting of:about 13% to about 17% chromium;about 16% to about 20% molybdenum;about 1.5% to about 4% silicon;about 0.7% to about 2% boron;about 0.9% to about 2% aluminum;about 23% to about 27% nickel;about 0.8% to about 1.2% tantalum;less than about 2.5% iron;less than about 2.5% incidental impurities; anda balance of cobalt.6. The alloy of claim 5 , consisting of:about 15% chromium;about 18% molybdenum;about 2.5% silicon;about 1.2% boron;about 1.2% aluminum; ...

ARTICLE

An article includes a substrate and a structure of additive manufacturing material of predetermined thickness attached to the substrate, the structure of additive manufacturing material formed by providing a metal alloy powder, forming an initial layer having a preselected thickness and a preselected shape including at least one aperture, with the metal alloy powder, sequentially forming an additional layer with the metal alloy powder over the initial layer, each of additional layers having an additional preselected thickness and an additional preselected shape including an aperture corresponding to the aperture in the initial layer, and joining each of the additional layers to the initial layer or any previously joined additional layers, forming a structure having a predetermined thickness and shape, and an aperture having a predetermined profile. The article includes a passageway through the structure including the aperture and a corresponding metering hole. 1. An article comprising:a substrate; and providing a metal alloy powder;', 'forming an initial layer with the metal alloy powder, the initial layer having a preselected thickness and a preselected shape including at least one aperture;', 'sequentially forming at least one additional layer with the metal alloy powder over the initial layer, each of the at least one additional layers having an additional preselected thickness and an additional preselected shape, the additional preselected shape including at least one aperture corresponding to the at least one aperture in the initial layer; and', 'joining each of the at least one additional layers to the initial layer or any previously joined additional layers, forming a structure having a predetermined thickness, a predetermined shape, and at least one aperture having a predetermined profile., 'a structure of additive manufacturing material of predetermined thickness attached to the substrate, the structure of additive manufacturing material being formed ...

NI-TI-CR NEAR TERNARY EUTECTIC ALLOY FOR GAS TURBINE COMPONENT REPAIR

A ternary near eutectic alloy of Ni, Ti, Cr is described having a relatively low melting temperature of approximately 1230 deg. C. or less, suitable for fusing cracks in turbine blades and vanes without substantial risk of cracking during the repair process. Such an alloy is suitable for low temperature joining or repair of turbine blades since it contains the same components as typical turbine blades and vanes without foreign elements to lower the melting point of the repaired material or adversely affect the mechanical properties of the repaired component. Exclusion of boron eliminates the formation of brittle boron compounds, detrimental to the properties of the repair or seam. 1. A method for repairing or joining a gas turbine component comprising:a) cleaning the area of said component to be repaired and filling said area to be repaired with a mixture of filler material and base material;wherein said filler material has a melting temperature less than the solution heat treatment temperature of said base material; andwherein said mixture contains relative fractions of said filler material and said base material so that full homogenization is achieved after heat treatment of said component;b) solution heat treating said component and said mixture above the melting point of said filler material achieving thereby fusion and homogenization.2. The method of wherein said filler is a near ternary eutectic alloy comprising Ni claim 1 , Ti claim 1 , Cr.3. The method of wherein said filler has substantially the following composition in weight percent: Ni(x) claim 2 , Ti(y) claim 2 , Cr(z) wherein x claim 2 , y claim 2 , z are chosen to total substantially 100% and individually lie in substantially the following ranges: 55%≦x≦65%; 15%≦y≦25%; 15%≦z≦25%.4. The method of wherein said filler has substantially the following composition (in weight percent): Ni(60%)+Ti(20%)+Cr(20%).5. The method of claim 1 , wherein said base material is alloy 247.6. The method of claim 2 , ...

COATING STRUCTURE MATERIAL

The invention is to provide a coating structure material excellent in Mg corrosion resistance, which has resistance to corrosion caused by molten Mg and molten Mg alloys. The invention relates to a coating structure material including an Ni—Co-base alloy substrate and a Co-base alloy coating layer formed on the Ni—Co-base alloy substrate, wherein the Co-base alloy coating layer contains, in terms of % by mass, Ni: 20% or less, Co: 42% or more, Si: 2.8% or less, and Fe: 3.5% or less. 1. A coating structure material comprising an Ni—Co-base alloy substrate and a Co-base alloy coating layer formed on the Ni—Co-base alloy substrate ,wherein the Co-base alloy coating layer contains, in terms of % by mass, Ni: 20% or less, Co: 42% or more, Si: 2.8% or less, and Fe: 3.5% or less.2. The coating structure material according to claim 1 , wherein the Co-base alloy coating layer further contains at least one element selected from the group consisting of claim 1 , in terms of % by mass claim 1 , C: 1.5% or less claim 1 , Mn: 1.0% or less claim 1 , Cr: 30% or less claim 1 , Mo: 20% or less claim 1 , W: 9.0% or less claim 1 , Ti: 0.3% or less claim 1 , and Al: 0.4% or less claim 1 , the remainder being unavoidable impurities.3. The coating structure material according to claim 1 , wherein the Ni—Co-base alloy contains claim 1 , in terms of % by mass claim 1 , C: 0.005 to 0.15% claim 1 , Cr: 8 to 22% claim 1 , Co: 5 to 30% claim 1 , Mo: 1 to less than 9% claim 1 , W: 5 to 20% claim 1 , Al: 0.1 to 2.0% claim 1 , and Ti: 0.3 to 2.5% claim 1 , the remainder being Ni and unavoidable impurities.4. The coating structure material according to claim 3 , wherein the Ni—Co-base alloy further contains at least one element selected from the group consisting of claim 3 , in terms of % by mass claim 3 , Si: 0.3% or less claim 3 , B: 0.015% or less claim 3 , Mg: 0.01% or less claim 3 , Zr: 0.2% or less claim 3 , and Hf: 0.8% or less.5. The coating structure material according to claim 3 , wherein ...

Structure braze of hard-to-weld superalloy components using diffusion alloy insert

A method for treating a component and a treated component are provided. The method includes the steps of machining a tapered slot in the component. The tapered slot is measured to determine dimensions. An insert is formed to have a corresponding geometry to the tapered slot with a braze gap between an outer surface of the insert and an inner surface of the tapered slot. A layer of a braze material is deposited on the outer surface of the insert, where a thickness of the layer corresponds to the braze gap. The layer of the braze material on the outer surface of the insert is sintered to fabricate a diffusion layer. The insert is positioned into the tapered slot. The diffusion layer is brazed to join the insert to the taper slot. The treated component includes a surface having a tapered slot, an insert, and a braze joint.

REPAIR MATERIAL PREFORM

A structural element and method for repairing a damaged portion of a metal component utilizes a preform configured to engage with the metal component and receive a repair material. The preform may be made of a material having a first melting point, and the repair material may be made of a material having a second melting point that is lower than the first melting point. The preform may be a mold configured to reconstruct the shape of the damaged portion of the metal component. The repair material may include a first material and an additive material, such as boron. The repair material may have a melting point that is approximately 40 degrees Fahrenheit lower than the melting point of the metal component. 1. A structural element for repairing a metal component comprising:a preform configured to receive repair material and repair a damaged portion of the metal component, wherein the metal component melts at a first temperature and the repair material melts at a second temperature that is lower than the first temperature, and wherein the preform has at least one of a preform wear resistance and a preform oxidation resistance that is greater than at least one of a repair material wear resistance and a repair material oxidation resistance of the repair material.2. The structural element of claim 1 , wherein the repair material comprises an additive material.3. The structural element of claim 1 , wherein the preform comprises a mold configured to reconstruct a shape of the damaged portion of the metal component.4. The structural element of claim 1 , wherein the preform comprises an alloy including cobalt or nickel.5. The structural element of claim 2 , wherein the repair material comprises a cobalt- or nickel-boron composition.6. The structural element of claim 1 , wherein the repair material has a melting point that is approximately 40 degrees Fahrenheit lower than a melting point of the metal component. This application is a divisional application of, and claims ...

SUPERALLOY COMPOSITE PREFORMS AND APPLICATIONS THEREOF

In one aspect, composite preforms for the repair of superalloy parts and/or apparatus are described herein. For example, a composite preform comprises a nickel-based superalloy powder component, a nickel-based braze alloy powder component and a melting point depressant component disposed in a fibrous polymeric matrix. The fibrous polymeric matrix can form a flexible cloth in which the nickel-based superalloy powder component, nickel-based braze alloy powder component and melting point depressant component are dispersed. 1. A method of repairing a nickel-based superalloy part comprising:providing an assembly by application of at least one composite preform to a damaged area of the nickel-based superalloy part, the composite preform including a nickel-based superalloy powder component, a nickel-based braze alloy powder component and a melting point depressant component disposed in a fibrous polymeric matrix, the melting point depressant component comprising boron in an amount of 0.3 to 1.5 weight percent of the composite preform; andheating the assembly to form a filler alloy metallurgically bonded to the damaged area, the filler alloy formed from the nickel-based superalloy powder component and the nickel-based braze alloy powder component, wherein the filler alloy is a load bearing component of the nickel-based superalloy part and exhibits tensile strength greater than 50 percent of tensile strength of the nickel-based superalloy of the part.2. The method of claim 1 , wherein the nickel-based braze alloy powder component has a melting point lower than the nickel-based superalloy powder component.3. The method of claim 2 , wherein the assembly is heated to a temperature greater than the melting point of the nickel-based braze alloy powder component and less than the melting point of the nickel-based superalloy powder component.4. The method of claim 1 , wherein the filler alloy is substantially fully dense.5. The method of claim 1 , wherein the filler alloy forms a ...

ASSEMBLY, TREATED ARTICLE, AND PROCESS OF TREATING A TURBINE COMPONENT

In some embodiments, a process treats a turbine component. The turbine component includes an article and a wear component brazed to the article. The process includes applying a braze tape on at least a portion of the wear component and thermal processing the turbine component while the braze tape is on the at least a portion of the wear component to treat the turbine component. In some embodiments, an assembly includes a turbine component. The turbine component includes an article and a pre-sintered preform brazed to a surface of the article. The assembly also includes a braze tape on at least a portion of the pre-sintered preform. In some embodiments, a treated turbine component includes a treated article and a pre-sintered preform brazed to a surface of the treated article. The treated turbine component has been thermally processed with the pre-sintered preform being substantially free of re-flow. 1. A process of treating a turbine component comprising an article and a wear component brazed to the article , the process comprising:applying a braze tape on at least a portion of the wear component; andthermal processing the turbine component while the braze tape is on the at least a portion of the wear component to treat the turbine component.2. The process of claim 1 , wherein the wear component is a pre-sintered preform.3. The process of claim 2 , wherein the thermal processing comprises thermally cycling the turbine component and hot isostatic pressing the turbine component.4. The process of claim 3 , wherein the braze tape reduces or eliminates re-flow of the pre-sintered preform during the thermal cycling and during the hot isostatic pressing.5. The process of claim 2 , wherein the pre-sintered preform is a hardface chiclet.6. The process of further comprising returning the turbine component to service without removing or replacing the hardface chiclet.7. The process of claim 2 , wherein the braze tape reduces or eliminates re-flow of the pre-sintered preform ...

NICKEL-BASED BRAZING FOIL AND PROCESS FOR BRAZING

An amorphous, ductile brazing foil is provided. According to one example embodiment, the composition consists essentially of NiCrBPSiwith 2 atomic percent≦a≦30 atomic percent; 0.5 atomic percent≦b≦14 atomic percent; 2 atomic percent≦c≦20 atomic percent; 0 atomic percent≦d≦14 atomic percent; incidental impurities≦0.5 atomic percent; rest Ni, where c>b>c/15 and 10 atomic percent≦b+c+d≦25 atomic percent. 1. An amorphous , ductile Ni-based brazing foil having a composition consisting essentially of{'br': None, 'sub': rest', 'a', 'b', 'c', 'd', 'e', 'f', 'g, 'NiCrBPSiCXY'}wherein a, b, c, d, e, f, and g are numbers such that 16 atomic percent≦a≦30 atomic percent; 0.5 atomic percent≦b≦14 atomic percent; 2 atomic percent≦c≦20 atomic percent; 0 atomic percent≦d≦14 atomic percent; 0 atomic percent≦e≦5 atomic percent; 0 atomic percentb>c/15; wherein 10 atomic percent b+c+d≦25 atomic percent, wherein X is one or more of the elements Mo, Nb, Ta, W and Cu; and wherein Y is one or both of the elements Fe and Co.2. The amorphous claim 1 , ductile brazing foil in accordance with claim 1 , wherein the B content b is such that 1 atomic percent≦b≦8 atomic percent.3. The amorphous claim 1 , ductile brazing foil in accordance with claim 1 , wherein the P content c is such that 5 atomic percent≦c≦18 atomic percent.4. The amorphous claim 1 , ductile brazing foil in accordance with claim 1 , wherein the Si content d is such that d=0 atomic percent.5. The amorphous claim 1 , ductile brazing foil in accordance with claim 1 , wherein the Si content d is such that 0 atomic percent Подробнее

NICKEL-BASED BRAZING FOIL, METHOD FOR PRODUCING A BRAZING FOIL, OBJECT WITH A BRAZING SEAM AND BRAZING METHOD

An amorphous ductile brazing foil is provided. The brazing foil has a composition consisting substantially of NiCrB,PSiMoXY, with 21 atomic %≤a≤28 atomic %; 0.5 atomic %≤b≤7 atomic %; 4 atomic %≤c≤12 atomic %; 2 atomic %≤d≤10 atomic %; 0 atomic %b>c/15 and 14 atomic %≤(b+c+d)≤20 atomic %.5. The amorphous claim 1 , ductile brazing foil according to claim 1 , wherein 0 atomic %≤f≤3 atomic %; 0 atomic %≤g≤15 atomic %.6. The amorphous claim 1 , ductile brazing foil according to claim 1 , wherein 14 atomic %≤(b+c+d)≤18 atomic %.7. The amorphous claim 1 , ductile brazing foil according to claim 1 , wherein the content of B is such that 1.5 atomic %≤b≤5.0 atomic %.8. The amorphous claim 1 , ductile brazing foil according to claim 1 , wherein the content of P is such that 9 atomic %≤c≤11 atomic %.9. The amorphous claim 1 , ductile brazing foil according to claim 1 , wherein ...

BRAZED OBJECT AND PROCESS FOR BRAZING TWO OR MORE PARTS

The invention provides a process for brazing two or three parts. A braze with a composition consisting of NiCrBPSiwith 20 atomic percent Подробнее

Ag BALL, Ag CORE BALL, FLUX-COATED Ag BALL, FLUX-COATED Ag CORE BALL, SOLDER JOINT, FORMED SOLDER, SOLDER PASTE AND Ag PASTE

Providing an Ag ball having a low alpha dose and a high sphericity regardless of impurity elements having an amount equal to or more than a predetermined value except for Ag. In order to suppress a soft error and reduce an connection fault, a content of U is equal to or less than 5 ppb, a content of Th is equal to or less than 5 ppb, a purity is equal to or more than 99.9% but equal to or less than 99.9995%, an alpha dose is equal to or less than 0.0200 cph/cm, a content of either Pb or Bi or a total content of both Pb and Bi is equal to or more than 1 ppm, and a sphericity is equal to or more than 0.90. 1: An Ag ball , comprising:an element U, a content thereof being equal to or less than 5 ppb; andan element Th, a content thereof being equal to or less than 5 ppb;wherein a purity of said Ag ball is equal to or more than 99.9% but equal to or less than 99.9995%;{'sup': '2', 'an alpha dose of said Ag ball is equal to or less than 0.0200 cph/cm;'}a content of either Pb or Bi or a total content of both Pb and Bi is equal to or more than 1 ppm; anda sphericity of said Ag ball is equal to or more than 0.90.2: The Ag ball as recited in claim 1 , wherein the alpha dose is equal to or less than 0.0010 cph/cm.3: The Ag ball as recited in claim 1 , wherein a diameter of said Ag ball is 1-1 claim 1 ,000 μm.4: A formed solder characterized in that a plurality of said Ag balls as recited in are dispersed in said solder.5: A solder paste claim 1 , containing said Ag ball as recited in .6: An Ag paste claim 1 , containing said Ag ball as recited in .7: A solder joint claim 1 , using said Ag ball as recited in .8: A flux-coated Ag ball claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'said Ag ball as recited in ; and'}a flux layer coating said Ag ball.9: A formed solder characterized in that a plurality of said flux-coated Ag balls as recited in are dispersed in the solder.10: A solder paste claim 8 , containing a plurality of said flux-coated Ag balls as ...

WELD FILLER FOR NICKEL-BASE SUPERALLOYS

A weld repair for repairing an imperfection in a nickel base superalloy article. The weld repair provides a weldment that includes a weld joint, a heat affected zone adjacent to the weld joint and a nickel base alloy base material adjacent to the heat affected zone and opposite the weld joint. The weld joint utilizes a nickel base weld filler material, having a composition, in weight percent of 0.03-0.13% C, 22.0-23.0% Cr, 18.5-19.5% Co, 1.8-2.2% W, 0.7-1.4% Nb, 2.2-2.4% Ti, 1.3-2.0% Al, 0.005-0.040% Zr, 0.002-0.008% B, up to 0.15% Mo, up to 0.35% Fe, up to 0.10% Mn, up to 0.10% Cu, up to 0.10% V, up to 0.15% Hf, up to 0.25% Si, and the balance Ni and incidental impurities. The weld filler material is characterized by an absence of Ta. 1. A nickel base weld filler material , comprising , in weight percent:0.03-0.13% C, 22.0-23.0% Cr, 18.5-19.5% Co, 1.8-2.2% W, 0.7-1.4% Nb, 2.2-2.4% Ti, 1.3-2.0% Al, 0.005-0.040% Zr, 0.002-0.008% B, up to 0.15% Mo, up to 0.35% Fe, up to 0.10% Mn, up to 0.10% Cu, up to 0.10% V, up to 0.15% Hf, up to 0.25% Si, and the balance Ni and incidental impurities;and wherein the weld filler material is characterized by an absence of Ta.2. The nickel base weld filler material of further having a γ′ precipitate size of at least 0.3 micrometers.3. The nickel base weld filler material of further including a volume fraction of at least 27% γ′ particles uniformly distributed in a γ matrix.4. The nickel base weld filler material of further including a volume fraction of at least 27% γ′ particles uniformly distributed in a γ matrix after post weld heat treatment.5. The nickel base weld filler material of further characterized by an absence of a 11 phase.6. A weldment comprising:a weld joint;a heat affected zone adjacent to the fusion line; anda nickel base alloy base material adjacent to the heat affected zone and opposite the weld joint; '0.03-0.13% C, 22.0-23.0% Cr, 18.5-19.5% Co, 1.8-2.2% W, 0.7-1.4% Nb, 2.2-2.4% Ti, 1.3-2.0% Al, 0.005-0.040% Zr, 0. ...

BRAZE SYSTEM, BRAZED ARTICLE, AND METHOD FOR FORMING A BRAZED ARTICLE

A braze system is disclosed, including a first surface, a second surface, a gap disposed between the first surface and the second surface, a capillary matrix disposed in the gap, and a braze material disposed in contact with the capillary matrix. The capillary matrix includes a matrix structure forming a plurality of capillaries. A brazed article is disclosed in which the braze material is disposed within the plurality of capillaries and contacts the first surface and the second surface. The braze material, the capillary matrix, the first surface, the second surface, and the gap form a brazed portion including less than about 20% voiding. A method for forming a brazed article includes disposing the capillary matrix into the gap, and infusing a braze material into the plurality of capillaries and in contact with the first surface and the second surface, forming the brazed portion. 1. A braze system , comprising:a first surface;a second surface;a gap disposed between the first surface and the second surface;a capillary matrix disposed in the gap, the capillary matrix including a matrix structure forming a plurality of capillaries; anda braze material disposed in contact with the capillary matrix.2. The braze system of claim 1 , wherein the matrix structure includes a cross-linked metallic matrix.3. The braze system of claim 2 , wherein the matrix structure includes up to a 100 μm pore size.4. The braze system of claim 3 , wherein the matrix structure includes between about a 20 μm to about a 60 μm pore size.5. The braze system of claim 2 , wherein the capillary matrix includes a material selected from the group consisting of superalloys claim 2 , nickel-based superalloys claim 2 , cobalt-based superalloys claim 2 , iron-based superalloys claim 2 , hard-to-weld alloys claim 2 , non-weldable alloys claim 2 , refractory alloys claim 2 , iron-based alloys claim 2 , steel alloys claim 2 , stainless steel alloys claim 2 , cobalt-based alloys claim 2 , nickel-based alloys ...

HIGH Cr Ni-BASED ALLOY WELDING WIRE, SHIELDED METAL ARC WELDING ROD, AND WELD METAL FORMED BY SHIELDED METAL ARC WELDING

Provided is a high Cr Ni-based alloy welding wire with which tensile strength and weld cracking resistance of a welded portion, the integrity of the microstructure of a welded metal, and inhibition of scale generation are improved. The high Cr Ni-based alloy welding wire is configured to have an alloy composition comprising, by mass, C: 0.04% or less, Mn: 7% or less, Fe: 1 to 12%, Si: 0.75% or less, Al: 0.01 to 0.7%, Ti: 0.01 to 0.7%, Cr: 25.0 to 31.5%, Ta: 1 to 10%, and Mo: 1 to 6%, and as inevitable impurities, Ca+Mg: less than 0.002%, N: 0.1% or less, P: 0.02% or less, O: 0.01% or less, S: 0.0015% or less, H: 0.0015% or less, Cu: 0.08% or less, and Co: 0.05% or less, and the balance: Ni. Then, the high CrNi-based alloy welding wire is configured such that the contents of S, Ta, Al, and Ti satisfy the following relation (1) and the contents of Ta, Mo, and N satisfy the following relation (2): 1. A high Cr Ni-based alloy welding wire comprising , by mass , C: 0.04% or less , Mn: 7% or less , Fe: 1 to 12% , Si: 0.75% or less , Al: 0.01 to 0.7% , Ti: 0.01 to 0.7% , Cr: 25.0 to 31.5% , Ta: 1 to 10% , and Mo: 1 to 6% , and as inevitable impurities , Ca+Mg: less than 0.002% , P: 0.02% N: 0.1% or less , or less , O: 0.01% or less , S: 0.0015% or less , H: 0.0015% or less , Cu: 0.08% or less , and Co: 0.05% or less , and the balance: Ni , contents of S , Ta , Al , and Ti satisfying the following relation (1) and contents of Ta , Mo , and N satisfying the following relation (2):{'br': None, '12000S+0.58Ta−2.6Al−2Ti£19.3\u2003\u2003(1)'}{'br': None, 'sup': '3', 'Ta+1.6Mo+187N5.7\u2003\u2003(2).'}2. A high Cr Ni-based alloy welding wire comprising , by mass , C: 0.04% or less , Mn: 7% or less , Fe: 1 to 12% , Si: 0.75% or less , Al: 0.01 to 0.7% , Ti: 0.01 to 0.7% , Cr: 25.0 to 31.5% , Ta: 1 to 10% , and Mo: 1 to 6% , and as inevitable impurities , N: 0.1% or less , P: 0.02% or less , O: 0.01% or less , S: 0.0015% or less , H: 0.0015% or less , Cu: 0.08% or less , and Co: 0. ...

LOW MELTING POINT BRAZE ALLOY FOR HIGH TEMPERATURE APPLICATIONS

A multi component braze filler alloy is described having a melting temperature less than about 1235 deg. C. and greater than about 1150 deg. C. This alloy can be processed by hot isostatic pressing (HIP) at a temperature above about 1065 deg. C. and is particularly suited for the repair of gas turbine blades and vanes, especially those made from Alloy 247. The relatively low Ti content in the present braze alloy tends to form less MC carbides at the joint interface, particularly in comparison with other braze alloys high in Zr and/or Hf. Processes for employing this braze filler alloy in processing of nickel-base superalloys, especially Alloy 247, are presented. 1. A method for repairing at least one crack in a nickel-base superalloy component comprising:{'sub': Ni', 'Cr', 'Ti', 'Al', 'Co', 'W', 'Mn', 'Ta', 'z, 'claim-text': [{'sub': 'Cr', '12%≦X≦16%,'}, {'sub': 'Ti', '13%≦X≦16%,'}, {'sub': 'Al', '0% Подробнее

Anode splitter plate and methods for making the same

Various embodiments of a reactant feed and return assembly, such as an anode splitter plate (ASP), are provided for facilitating reactant feed and exhaust flow in a solid oxide fuel cell (SOFC) stack system. Embodiments include a reactant feed and return assembly including at least a first portion formed of a chromium-based alloy, such as a chromium-iron alloy, having a similar coefficient of thermal expansion as other SOFC components and may therefore reduce internal stress in an SOFC stack. Methods for making an a reactant feed and return assembly comprising a chromium-based alloy are also provided.

BRAZE ALLOY COMPOSITIONS AND BRAZING METHODS FOR SUPERALLOYS

A multi-component braze filler alloy comprising at least 70% by weight MarM509A superalloy with the remainder MarM509B superalloy is diffusion brazed to a CM247 alloy base substrate, such as a gas turbine blade or vane. It is shown that generally higher braze temperatures lead to improved results including the possibility of re-welding such a brazed component, resulting in a re-repaired brazed component capable of continued commercial service. 1. A material for the braze repair of a nickel-base superalloy turbine component comprising:a MarM509A/B mixture of no less than approximately 70% by weight of MarM509A base alloy and the balance comprising MarM509B braze alloy, including about 10%-15% by volume of a liquid binder to form a paste.2. A material as in wherein the nickel-base superalloy turbine component comprises CM247.3. A material as in claim 1 , wherein the nickel-base superalloy component is a turbine vane or blade.4. An article of manufacture comprising a Ni-base superalloy component wherein the Ni-base superalloy component has a portion thereof repaired by brazing with a brazing material according to .5. An article of manufacture as in claim 4 , wherein the Ni-base superalloy turbine component comprises CM247.6. An article of manufacture as in claim 4 , wherein the Ni-base superalloy component is a turbine vane or blade.7. An article of manufacture as in claim 4 , wherein the Ni-base superalloy component has a portion thereof re-repaired by post braze welding and is suitable for continued service.8. An article of manufacture as in claim 7 , wherein the Ni-base superalloy turbine component comprises CM247.9. An article of manufacture as in claim 7 , wherein the Ni-base superalloy component is a turbine vane or blade.10. An article of manufacture as in claim 4 , wherein the Ni-base superalloy component is post-braze heat treated and is suitable for continued service.11. An article of manufacture as in claim 10 , wherein the Ni-base superalloy turbine ...

New product and use thereof

A new pre-alloyed metal based powder, intended to be used in surface coating of metal parts. The powder is deposited using e.g. laser cladding or plasma transfer arc welding (PTA), or thermal spray (e.g. HVOF). The powder is useful for reducing friction and improving wear reducing properties of the deposited coating. Such coatings may also improve machinability. As friction or wear reducing component, inclusions of manganese sulphide or tungsten sulphide in the pre-alloyed powder may be used.

NOVEL WELD FILLER METAL

An alloy includes a matrix that includes an amount of high-melting-temperature superalloy between about 30% and 95% by weight and an amount of low-melting-temperature superalloy between about 0% and 70% by weight. The alloy also includes an amount of a ceramic reinforcement material between about 2% and 50% by volume, dispersed in the matrix. 1. An alloy comprising: an amount of high-melting-temperature superalloy between about 30% and 95% by weight; and', 'an amount of low-melting-temperature superalloy between about 0% and 70% by weight; and, 'a matrix comprisingan amount of a ceramic reinforcement material between about 2% and 50% by volume, dispersed in the matrix.2. The alloy of claim 1 , wherein the amount of the low-melting-temperature superalloy is between about 1% and 70% by weight.3. The alloy of claim 1 , wherein the high-melting-temperature superalloy has a melting temperature greater than about 1315 degrees Celsius (° C.) claim 1 , and the low-melting-temperature superalloy has a melting temperature in a range below about 1290° C.4. The alloy of claim 1 , wherein the high-melting-temperature superalloy comprises iron-based claim 1 , cobalt-based claim 1 , and/or nickel-based superalloys.5. The alloy of claim 1 , wherein the low-melting-temperature superalloy comprises iron-based claim 1 , cobalt-based claim 1 , and/or nickel-based braze alloys.6. The alloy of claim 1 , wherein the ceramic reinforcement material comprises silicon carbide fibers claim 1 , titanium nitride fibers claim 1 , titanium nanotubes claim 1 , titanium carbide fibers claim 1 , or titanium carbide nanotubes.7. The alloy of claim 1 , wherein the amount of high-melting-temperature superalloy is between about 50% to 95% by weight claim 1 , the amount of the low-melting-temperature superalloy between about 2% and 50% by weight claim 1 , and the amount of the ceramic reinforcement material is 5% to 50%.8. The alloy of claim 1 , wherein the amount of high-melting-temperature superalloy is ...

NICKEL-BASED SUPERALLOY WITH INCREASED OXIDATION RESISTANCE, POWDER, WELDING METHOD AND COMPONENT

A nickel-based superalloy with an increased oxidation resistance, power, and welding method, is provided. As a result of the addition of hafnium, no precipitation phases occur in the nickel-based superalloy and the proportions of chromium (Cr) and aluminium (Al) lead to a slightly reduced y′-content, thus achieving good oxidation resistance and weldability. 1. A nickel-based superalloy comprising in (% by weight):{'b': 8', '8', '10', '5, 'cobalt (Co): .%-.%;'}{'b': 15', '17, 'chromium (Cr): %-%;'}{'b': 1', '2', '2', '2, 'molybdenum (Mo): from .% to .%;'}{'b': 3', '2', '4', '2, 'tungsten (W): from .% to .%;'}{'b': 2', '3', '3', '3, 'aluminum (Al): from .% to .%;'}{'b': 4', '2', '5', '4, 'titanium (Ti): from .% to .%;'}{'b': 0', '006', '0', '01, 'boron (B): from .% to .%;'}{'b': 0', '002', '0', '003, 'zirconium (Zr): from .% to .%;'}{'b': 0', '1', '0', '2, 'hafnium (Hf): from .% to .%;'}{'b': 0', '1', '0', '2, 'carbon (C): from .% to .%;'}{'b': 0', '008', '0', '012, 'yttrium (Y): from .% to .%; and'}nickel.2. The nickel-based superalloy as claimed in claim 1 , consisting of nickel (Ni) claim 1 , cobalt (Co) claim 1 , chromium (Cr) claim 1 , molybdenum (Mo) claim 1 , tungsten (W) claim 1 , aluminum (Al) claim 1 , titanium (Ti) claim 1 , boron (B) claim 1 , zirconium (Zr) claim 1 , hafnium (Hf) claim 1 , carbon (C) claim 1 , yttrium (Y).3. A powder comprising an alloy as claimed in .4. A welding method claim 1 , wherein an alloy as claimed in is used as a welding filler material.580. The welding method as claimed in claim 4 , wherein René is deposition welded.6. A component comprisinga nickel-based substrate; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a deposition weld composed of an alloy as claimed in .'}7. A welding method claim 3 , wherein a powder as claimed in is used as a welding filler material.8. The welding method as claimed in claim 7 , wherein René 80 is deposition welded.9. A component comprisinga nickel-based substrate, and{'claim-ref': {'@idref ...

Metal Carbide/Nitride Precipitation Control in Fusion Welding

Properties and performance of weld material between metals in a weldment is controlled by modifying one or more of the nitrogen content and the carbon content to produce carbide (e.g. MC-type), nitride and/or complex carbide/nitride (e.g. MX-type) type precipitates. Fusion welding includes (i) adjusting shield gas composition to increase nitrogen/carbon gas and nitride/carbide species, (ii) adjusting composition of nitrogen/carbon in materials that participate in molten welding processes, (iii) direct addition of nitrides/carbides (e.g. powder form), controlled addition of nitride/carbide forming elements (e.g. Ti, Al), or addition of elements that increase/impede solubility of nitrogen/carbon or nitride/carbide promoting elements (e.g. Mn), and (iv) other processes, such as use of fluxes and additive materials. Weld materials have improved resistance to different cracking mechanisms (e.g., hot cracking mechanisms and solid state cracking mechanisms) and improved tensile related mechanical properties. 2. The weldment of claim 1 , wherein a microstructure of the weld material includes a plurality of precipitates claim 1 , wherein the plurality of precipitates include one or more of a plurality of metal carbide precipitates and a plurality of metal carbide/nitride precipitates claim 1 , and wherein claim 1 , for a carbon content of 0.05 wt. % claim 1 , a volume fraction of the plurality of precipitates is 0.0025 or less for nitrogen in the range of 15 ppm to 120 ppm and is 0.003 or more for nitrogen in the range of 200 ppm to 1500 ppm.3. The weldment of claim 1 , wherein the composition of the weld material includes 1-4 wt. % Nb.4. The weldment of claim 3 , wherein a microstructure of the weld material includes a plurality of NbC precipitates.5. The weldment of claim 1 , wherein nitrogen is present from 600 ppm to 1400 ppm claim 1 ,wherein a microstructure of the weld material includes a plurality of precipitates and the plurality of precipitates include one or more ...

ARC SPOT WELDING METHOD AND WELDING WIRE

The present invention pertains to: a method for arc spot welding a steel plate having a carbon equivalent CeqBM of 0.35 or more (the carbon equivalent CeqBM is defined in the specification) and containing 0.35 mass % or more of C, the method being characterized by forming a weld metal having a structure in which the proportion of an austenitic structure exceeds 80%; and a welding wire suitable for being used therefor. According to the arc spot welding method, brittle fracture can be prevented and high joint strength can be obtained even when the C content in the steel plate is high. 1. An arc spot welding method , comprising:forming a weld metal having a structure in which a proportion of an austenite structure is more than 80% on a steel sheet,{'sub': 'BM', 'wherein the steel sheet has a carbon equivalent Ceqof 0.35 or more and a C content of 0.35 mass % or more, and'}{'sub': 'BM', 'claim-text': {'br': None, 'sub': BM', 'BM', 'BM', 'BM', 'BM', 'BM', 'BM', 'BM, 'Ceq=[C]+[Mn]/6+([Cu]+[Ni])/15+([Cr]+[Mo]+[V])/5 \u2003\u2003(1),'}, 'the carbon equivalent Ceqis expressed by formula (1){'sub': BM', 'BM', 'BM', 'BM', 'BM', 'BM', 'BM, 'where [C], [Mn], [Cu], [Ni], [Cr], [Mo], and [V]respectively represent C, Mn, Cu, Ni, Cr, Mo, and V contents (mass %) in the steel sheet.'}2. The arc spot welding method according to claim 1 , wherein the forming is forming the weld metal with a welding wire comprising 30 mass % or more of Ni.3. The arc spot welding method according to claim 1 , wherein the forming is forming the weld metal with a welding wire comprising:C: 1.5 mass % or less,Si: 0.5 to 0.7 mass %,Mn: 10 to 20 mass %,Ni: less than 30 mass %,Cr: 1 to 5 mass %, andMo: 5 mass % or less, where a total of Mn and Ni is 25 mass % or more.4. The arc spot welding method according to claim 1 , wherein the forming is forming the weld metal with a welding wire claim 1 , wherein X is 600 or less claim 1 , and {'br': None, 'i': 'X=', 'sub': W', 'W', 'W', 'W', 'W', 'W', 'W, '521−353[C]−22[ ...

Method for Joining Ceramics to Ceramics or Ceramics to Metals, and Apparatus

An assembly including a ceramic body. The assembly comprises a tungsten coupling attached to the ceramic body with a first joint that forms a first helium tight seal between the ceramic body and the tungsten coupling and where the first helium tight seal maintains its integrity at a temperature over 400° C. The assembly includes a metal body attached to the tungsten coupling with a second joint that forms a second helium tight seal between the metal body and the tungsten coupling and where the second helium tight seal maintains its integrity at a temperature over 400° C. A method. A mixture. A coupling. 1. An assembly comprising:a ceramic body;a tungsten coupling attached to the ceramic body with a first joint that forms a first helium tight seal between the ceramic body and the tungsten coupling and where the first helium tight seal maintains its integrity at a temperature over 400° C.; anda metal body attached to the tungsten coupling with a second joint that forms a second helium tight seal between the metal body and the tungsten coupling and where the second helium tight seal maintains its integrity at a temperature over 400° C.2. The assembly of wherein the ceramic body claim 1 , the tungsten coupling and the metal body are hollow and form a continuous channel extending through and inside the ceramic body claim 1 , the tungsten coupling claim 1 , the metal body and the first and second helium tight seals.3. The assembly of wherein the ceramic body is made of silicon carbide and the metal body is made of super alloy.4. The assembly of wherein the first joint is made of between 30 wt % (weight percent or percent by mass) and 80 wt % claim 3 , nominally 60 wt % claim 3 , aluminum-silicate claim 3 , and between 20 wt % and 70 wt % magnesium-silicate claim 3 , also known as Steatite.5. The assembly of wherein the first joint is made of between 16.8 wt % and 35.8 wt % claim 3 , nominally 28.2 wt % claim 3 , alumina claim 3 , between 57.9 wt % and 61.2 wt % claim 3 , ...