Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 8. Отображено 8.
07-04-2023 дата публикации

Electromagnetic cold crucible directional solidification Nb-Si-based alloy process simulation system and method

Номер: CN115935454A
Автор: WANG SHU, CHEN RUIRUN, CHEN DEZHI, ZHANG XIAOFU, HAO JIAQI, WANG LIANG, SU YANQING, GUO JINGJIE
Принадлежит:

The invention discloses an electromagnetic cold crucible directional solidification Nb-Si-based alloy process simulation system and method, and relates to the technical field of cold crucible directional solidification. The method aims at solving the problems that an existing electromagnetic cold crucible directional solidification Nb-Si-based alloy process simulation method cannot obtain a magnetic field and a temperature field at the same time, and the process modification efficiency and accuracy of a non-simulation engineer are not high. The method comprises the following steps: drawing an electromagnetic cold crucible model; endowing the electromagnetic cold crucible model with material parameters; setting boundary conditions for the electromagnetic cold crucible model; performing mesh generation on the electromagnetic cold crucible model, and discretizing a physical equation of the electromagnetic cold crucible model after the mesh generation to obtain a solution matrix; inputting ...

Подробнее
Номер записи: 1
02-05-2023 дата публикации

Preparation method of directional solidification Nb-Si-based alloy large-size cast ingot of electromagnetic cold crucible

Номер: CN116037901A
Автор: WANG SHU, CHEN RUIRUN, CHEN DEZHI, ZHANG XIAOFU, WANG QI, WANG LIANG, SU YANQING, GUO JINGJIE
Принадлежит:

The invention discloses a preparation method of a directional solidification Nb-Si-based alloy large-size cast ingot of an electromagnetic cold crucible, and relates to a mechanical power closed test platform. The preparation method aims at solving the problems that according to an existing preparation method of the Nb-Si-based alloy directional cast ingot, electromagnetic force disturbance exists in the front edge of a solid-liquid interface, convection is promoted, the temperature gradient of the front edge of the solid-liquid interface is reduced, and directional solidification of the alloy is not facilitated. Step 4, starting melting of a large-size cast ingot of an electromagnetic cold crucible; step 5, ultrasonic-assisted directional solidification of the electromagnetic cold crucible; step 6, cooling of the directional cast ingot: after the directional solidification process is stopped, an ultrasonic device is turned off, the cooling time is 30 min, and finally, the large-size cast ...

Подробнее
Номер записи: 2
26-05-2023 дата публикации

Equipment and method for continuously preparing niobium-silicon alloy directional solidification structure in short process

Номер: CN116159984A
Автор: WANG QI, CHEN RUIRUN, FANG HONGZE, DING XIN, WANG LIANG, SU YANQING, GUO JINGJIE
Принадлежит:

The invention relates to equipment and a method for continuously preparing a niobium-silicon alloy directional solidification structure in a short process, the upper end of a box body is connected with a box cover, the lower end of the box cover is fixedly provided with a feeder and a feeding bar, the box cover is fixedly provided with a connecting rod, the connecting rod is fixedly provided with a fixing piece, and the fixing piece is fixedly provided with a conical water-cooling steel funnel; a bent channel is arranged at the lower end of the conical water-cooling steel funnel, a water-cooling copper coil is sleeved outside the bent channel, a water-cooling copper crucible is fixed on a bottom plate of the box body, a water-cooling copper coil is sleeved outside the water-cooling copper crucible, a gallium-indium container is fixed at the lower end of the bottom plate of the box body, and a pull-down device is further arranged below the gallium-indium container. According to the short-process ...

Подробнее
Номер записи: 3
25-07-2023 дата публикации

Al-Co-Cr-Fe-Ni-Ta series high-strength and high-entropy alloy applied in high-temperature environment and preparation method

Номер: CN116479303A
Автор: CHEN RUIRUN, REN HAO, YANG XU, QIN GANG, WANG LIANG, WU SHIPING, SU YANQING, GUO JINGJIE
Принадлежит:

The invention discloses an Al-Co-Cr-Fe-Ni-Ta series high-strength and high-entropy alloy applied in a high-temperature environment and a preparation method, and relates to the Al-Co-Cr-Fe-Ni-Ta series high-strength and high-entropy alloy applied in the high-temperature environment and the preparation method. In order to solve the problems that an existing high-entropy alloy is low in strength and hardness and poor in high-temperature performance, the Al-Co-Cr-Fe-Ni-Ta series high-strength and high-entropy alloy applied in the high-temperature environment is composed of Al, Co, Cr, Fe, Ni and Ta elements, the expression is (AlCoCrFeNi) 100-xTax, x is 2-6, and Al, Co, Cr, Fe and Ni are equal in atomic ratio. The high-entropy alloy is prepared by adopting an electric arc melting method, and the obtained high-entropy alloy has high strength and high hardness at room temperature, has good high-temperature performance and has relatively high strength in a high-temperature environment. The method ...

Подробнее
Номер записи: 4
23-06-2023 дата публикации

Preparation method of pollution-free eutectic Nb-Si directional solidification alloy

Номер: CN116274961A
Автор: CHEN DEZHI, CHEN RUIRUN, WANG SHU, WANG QI, WANG LIANG, SU YANQING
Принадлежит:

The invention discloses a preparation method of a pollution-free eutectic Nb-Si directionally solidified alloy, and relates to a preparation method of a directionally solidified alloy. The invention aims to solve the problems that a melt is polluted and the room-temperature fracture toughness is finally deteriorated in the existing directional solidification preparation process. The method comprises the steps that firstly, alloy raw materials are weighed; 2, smelting and ingot casting; thirdly, the cast ingot cast in the second step is cut into metal rods through linear cutting, the metal rods are cleaned and polished, and the metal rods without machining traces are obtained; 4, preparing a pure Nb cast ingot; 5, preparing a pure Nb tube; and sixthly, the metal rod in the third step is placed in the pure Nb tube in the fifth step and then placed in a vacuum directional solidification furnace for preparation, a prepared directional solidification Nb-Si alloy cast ingot is cooled in Ga-In ...

Подробнее
Номер записи: 5
04-04-2023 дата публикации

Ti-Mo-Ni-Al-Zr corrosion-resistant titanium alloy and preparation method thereof

Номер: CN115896540A
Автор: LUO LIANGSHUN, YANG YONG, WANG BINBIN, SU BAOXIAN, WANG LIANG, SU YANQING, GUO JINGJIE
Принадлежит:

The invention discloses a Ti-Mo-Ni-Al-Zr corrosion-resistant titanium alloy and a preparation method thereof, and belongs to the technical field of titanium alloys. The titanium alloy comprises, by mass, 0.3% of Mo, 0.8% of Ni, 2% of Al, 2% of Zr and the balance Ti. According to the method, the corrosion resistance of the titanium alloy is improved in an annealing treatment mode, the mass loss condition of the titanium alloy in a 5M HCl solution is measured in a soaking corrosion mode, the corrosion rate of the titanium alloy is represented, research finds that the annealing temperature has important influence on the corrosion resistance of the titanium alloy, and in addition, the corrosion resistance of the titanium alloy at the low annealing temperature (750 DEG C) is obtained. And the Ti-0. 3Mo-0. 8Ni-2Al-2Zr alloy has relatively good corrosion resistance in concentrated hydrochloric acid. And compared with a contrast alloy, the corrosion resistance is improved by about 28%.

Подробнее
Номер записи: 6
05-05-2023 дата публикации

Low-density refractory multi-principal-element alloy as well as preparation method and application thereof

Номер: CN116065076A
Автор: WANG LIANG, LI ZHE, WANG BINBIN, SU YANQING, CHEN RUIRUN, LUO LIANGSHUN, GUO JINGJIE
Принадлежит:

The invention discloses a low-density refractory multi-principal-element alloy and a preparation method and application thereof. The invention belongs to the technical field of novel metal materials. The invention aims to solve the technical problems of high density and preparation cost and unmatched strength and plasticity of the existing refractory multi-principal-element high-temperature alloy. The nominal chemical expression of the low-density refractory multi-principal element alloy is TiaNbbMocMd, M is a light element, a is equal to 30 at.% to 45 at.%, b is equal to 30 at.% to 45 at.%, c is equal to 15 at.% to 25 at.%, and d is equal to 2 at.% to 18 at.%. The method comprises the following steps: putting a cast ingot into a vacuum arc furnace, vacuumizing, smelting under the protection of inert gas, and cooling along with the furnace to obtain the low-density refractory multi-principal-element alloy. The refractory multi-principal element alloy disclosed by the invention has relatively ...

Подробнее
Номер записи: 7
15-08-2023 дата публикации

Method for improving high-temperature oxidation resistance of refractory high-entropy alloy, high-performance refractory high-entropy alloy and preparation and application of high-performance refractory high-entropy alloy

Номер: CN116590634A
Автор: WANG LIANG, LI ZHE, LI ZHIWEN, LIU CHEN, CHEN RUIRUN, LUO LIANGSHUN, SU YANQING
Принадлежит:

The invention discloses a method for improving high-temperature oxidation resistance of a refractory high-entropy alloy, the high-performance refractory high-entropy alloy and preparation and application of the high-performance refractory high-entropy alloy. The invention belongs to the field of high-temperature alloy materials. The invention aims to solve the technical problem that the inherent oxidation resistance of the existing refractory high-entropy alloy is poorer under a high-temperature condition. According to the method, surface remelting and surface in-situ deposition of a pure aluminum layer are carried out on the as-cast refractory high-entropy alloy through electron beam surface treatment, so that an alloy surface treatment layer and a matrix are combined in a metallurgical mode, and a high-quality surface treatment layer and a bonding interface are obtained by regulating and controlling technological parameters such as electron beam current density and wire feeding speed.

Подробнее
Номер записи: 8