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Titanium-based alloy powder and preparation method thereof, and preparation method of titanium-based alloy parts

A technology of titanium-based alloy and powder, which is applied in the field of metal materials and its preparation, can solve the problems of insufficient fluidity and high cost of titanium-based alloy powder, and achieve the effects of short preparation cycle, strong repeatability and simple process method

Active Publication Date: 2022-04-22
UNIV OF SCI & TECH BEIJING
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a titanium-based alloy powder and its preparation method, and a preparation method of titanium-based alloy parts. Hydrogen titanium powder is obtained by shaping and microalloying, which significantly improves the sphericity and flow properties of non-spherical HDH titanium powder, meets the powder requirements for selective laser melting process, and has low preparation cost. The prepared titanium-based alloy parts have ultra-fine grain The microstructure and nanoscale heterogeneous structure have the characteristics of high strength and high plasticity at the same time, so as to solve the technical problems of insufficient fluidity and high cost of titanium-based alloy powder in the prior art

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  • Titanium-based alloy powder and preparation method thereof, and preparation method of titanium-based alloy parts
  • Titanium-based alloy powder and preparation method thereof, and preparation method of titanium-based alloy parts
  • Titanium-based alloy powder and preparation method thereof, and preparation method of titanium-based alloy parts

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preparation example Construction

[0045] At the same time, the invention also discloses a method for preparing interstitial atom-strengthened titanium-based alloy powder, which specifically includes the following steps:

[0046] S100: Weigh non-spherical hydrogenated dehydrogenation titanium powder and grinding balls, and put them into a rotary tube furnace, and the tube furnace rotates at a speed of 10~60rad / min. Among them: the particle size of hydrogenated dehydrogenated titanium powder is -325 mesh; the mass ratio of grinding balls to hydrogenated dehydrogenated titanium powder is 0.5~2:1.

[0047] S200: Introduce a mixture of argon gas and gas containing interstitial atoms into the above-mentioned rotary tube furnace, raise the temperature of the tube furnace to 140-200°C at a heating rate of 5-10°C / min, and keep it warm for 30min-3h, so that the gap Atoms fully and uniformly react with the non-spherical hydrodehydrogenated titanium-based alloy powder.

[0048] S300: Introduce argon gas into the above-me...

Embodiment 1

[0060] The hydrogenated dehydrogenated titanium powder is used as the raw material, and the particle size of the hydrogenated dehydrogenated titanium powder is -325 mesh. Put titanium powder and zirconia grinding balls into a tubular quartz boat with a mass ratio of 1:1, put them into a rotary sintering furnace, raise the temperature to 160°C at 5°C / min, and keep it warm for 30min. The whole process is under argon and oxygen (oxygen volume fraction 10vol%) in a mixed atmosphere. After the heat preservation is over, replace the atmosphere with a pure argon protective atmosphere, raise the temperature to 450°C at a rate of 5°C / min, and hold the temperature for 60 minutes to promote the full solid solution of O in the powder. At the same time, under the combined action of mechanical force and high temperature, hydrogenation The irregular shape of the dehydrogenation powder is spheroidized, the particle size is uniform, and the alloyed titanium-based alloy powder is obtained after...

Embodiment 2

[0063] The hydrogenated dehydrogenated titanium powder is used as the raw material, and the particle size of the hydrogenated dehydrogenated titanium powder is -325 mesh. Put titanium powder and zirconia grinding balls into a tubular quartz boat with a mass ratio of 0.5:1, put them into a rotary sintering furnace, raise the temperature to 200°C at 10°C / min, and keep it warm for 3 hours. The whole process is under argon and nitrogen (Nitrogen gas fraction 10vol%) in a mixed atmosphere. After the heat preservation is over, replace the atmosphere with a pure argon protective atmosphere, raise the temperature to 600°C at a rate of 10°C / min, and hold the heat for 3 hours to promote the full solid solution of N in the powder. At the same time, under the combined action of mechanical force and high temperature, hydrogenation The irregular shape of the dehydrogenation powder is spheroidized, the particle size is uniform, and the alloyed titanium-based alloy powder is obtained after co...

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Abstract

The invention provides a titanium-based alloy powder and its preparation method, and a preparation method of a titanium-based alloy product. The composition of the titanium-based alloy powder is Ti a x b m c , where: 0

Description

technical field [0001] The invention relates to the technical field of metal materials and their preparation, in particular to a titanium-based alloy powder and a preparation method thereof, and a preparation method of a titanium-based alloy product. Background technique [0002] Titanium is an important strategic metal widely used in the fields of aerospace, biomedical and military materials. The use of additive manufacturing technology to prepare titanium and its alloy materials can meet the needs of free design, lightweight and rapid development, and can effectively solve the shortcomings of traditional titanium alloy processing difficulties and high costs. However, the atomized powder required for additive manufacturing inevitably has defects such as hollow powder, low yield (the yield of fine powder is generally lower than 35%), and disadvantages of high cost (Ti-6Al-4V powder is used as an example. For example, the price of aerosolized spherical powder is generally hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C14/00B22F9/04B22F1/065B22F1/142B22F10/28B33Y70/00
CPCC22C14/00B22F9/04B33Y70/00B82Y30/00B82Y40/00B22F2009/043B22F1/065B22F1/142C22C1/0458B22F10/28B22F2999/00B22F2998/10B33Y10/00B22F9/023B22F2009/048B22F2201/11B22F2201/03B22F2201/02B22F2203/11
Inventor 路新徐伟刘博文吴渊于爱华张嘉振张策潘宇曲选辉
Owner UNIV OF SCI & TECH BEIJING
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