Manufacturing method of special spherical powder for additive manufacturing of nanometer multiphase reinforced titanium-based composite material

A technology for a titanium-based composite material and a manufacturing method, applied in the field of metal powder metallurgy, can solve the problems of insufficient laser melting of reinforced phase particle clusters, difficult to precisely control the reinforced phase content, poor fluidity, etc., so as to avoid physical properties and energy absorption coefficients. difference in argon, very few powder argon cavities, low cost effect

Inactive Publication Date: 2021-07-02
NORTHEASTERN UNIV
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  • Application Information

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Problems solved by technology

[0006] In order to solve the technical problems of high oxygen content, poor fluidity, difficult to precisely control the content of reinforcement phase, easy to induce clusters of reinforcement phase particles or insufficient laser melting in the existing technology of titanium-based composite material powder for additive manufacturing, The in

Method used

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  • Manufacturing method of special spherical powder for additive manufacturing of nanometer multiphase reinforced titanium-based composite material
  • Manufacturing method of special spherical powder for additive manufacturing of nanometer multiphase reinforced titanium-based composite material
  • Manufacturing method of special spherical powder for additive manufacturing of nanometer multiphase reinforced titanium-based composite material

Examples

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Effect test

Embodiment 1

[0041] This implementation case provides a kind of reinforcement phase volume fraction that is 5.5% (TiB+Y 2 o 3 +Ti 5 Si 3 ) / Ti-6Al-3Sn-4Zr-0.9Mo-0.3Si nanometer multiphase reinforced spherical powder of high-temperature titanium-based composite material manufacturing method. The alloy composition mass ratio corresponding to the in-situ self-generated high-temperature titanium-based composite material is: Ti-6Al-3Sn-4Zr-0.9Mo-0.3Si-0.4Y-0.6B, that is, 6% Al, 3% Sn, 4 % Zr, 0.9% Mo, 0.3% Si, 0.4% Y, 0.6% B, and the rest Ti. Correspondingly, a eutectic reaction occurs between Ti and B, and TiB with a volume fraction of 3.4% of the reinforcement phase is generated after in-situ authigenesis; Y reacts with solid-dissolved oxygen atoms in the melt to form Y with a volume fraction of 0.95% 2 o 3 ; solid state phase transition process, about the temperature above the β phase transition point, about 1.2% volume fraction of Ti 5 Si 3 Rapid precipitation from the β-Ti matrix.

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Embodiment 2

[0049] This implementation case provides a kind of reinforcement phase volume fraction that is 5.5% (TiB+Y 2 o 3 ) / Ti-6Al-4V nano multi-phase reinforced high-temperature titanium-based composite material spherical powder manufacturing method. The stoichiometric ratio corresponding to the in-situ self-generated high-temperature titanium-based composite material is: Ti-6Al-4V-0.9Y-0.6B (wt.%). Correspondingly, the volume fraction of in situ self-generated TiB is 3.4%, and the in situ self-generated Y 2 o 3 The volume fraction is 2.1%.

[0050] The difference between this embodiment and Example 1 is that step ① is to prepare raw materials according to the stoichiometric ratio of Ti-6Al-4V-0.9Y-0.6B (wt.%), and the titanium sponge, aluminum particles, Al -V intermediate alloy particles, put into V-type mixer for uniform mixing. Then the weighed high-purity boron powder and yttrium powder are uniformly mixed together with high-purity titanium powder of the same quality, then w...

Embodiment 3

[0053] This implementation case provides a kind of reinforcement phase volume fraction that is 5.5% (TiB+Y 2 o 3 +Ti 5 Si 3 ) / Ti-6Al-3Sn-4Zr-0.9Mo-0.3Si nanometer multiphase reinforced spherical powder of high-temperature titanium-based composite material manufacturing method. The alloy composition mass ratio corresponding to the in-situ self-generated high-temperature titanium-based composite material is: Ti-6Al-3Sn-4Zr-0.9Mo-0.3Si-0.4Y-0.6B, that is, 6% Al, 3% Sn, 4% 0.9% of Zr, 0.9% of Mo, 0.3% of Si, 0.4% of Y, 0.6% of B, and the rest of Ti. Correspondingly, the volume fraction of in situ generated reinforcement phase is 3.4% TiB, 0.95% Y 2 o 3 , 1.2% Ti 5 Si 3 .

[0054] The difference between this example and Example 1 is that in step ①, the titanium sponge, aluminum particles, tin particles, silicon particles, zirconium sponge, Al-Mo and Al-V intermediate alloy particles, Ti-Y The intermediate alloy chips are loaded into the V-type mixer for uniform mixing. Hi...

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Abstract

The invention relates to a manufacturing method of special spherical powder for additive manufacturing of a nanometer multiphase reinforced titanium-based composite material. The manufacturing method comprises the following steps that S1, an electrode bar is pressed by adopting raw materials of an alloy matrix and a reinforced phase; S2, vacuum casting is carried out to synthesize a cast ingot; S3, the cast ingot is subjected to machining of an electrode bar for powder preparation; S4, plasma rotating electrode method powder preparation is carried out on the electrode bar for powder preparation; and S5, the obtained powder are screened and packaged. The spherical powder for the titanium-based composite material manufactured through the method has the outstanding advantages of being uniform in reinforced phase distribution, high in purity, extremely few in hollow sphere and satellite sphere, concentrated in particle size, high in sphericity degree, excellent in fluidity, low in cost and the like; according to the method, in-situ synthesis and superfine net-shaped structure distribution of the nanometer reinforced phase inside spherical powder particles are successfully achieved, and the high-quality spherical powder is specially provided for electron beam selective melting and laser cladding method additive manufacturing of nanometer multiphase reinforced titanium-based composite material complex parts.

Description

technical field [0001] The invention relates to a method for manufacturing special spherical powder for additive manufacturing of nanometer multiphase reinforced titanium-based composite materials, and belongs to the technical field of metal powder metallurgy. Background technique [0002] Particle-reinforced titanium-based composites have outstanding advantages such as higher high-temperature specific strength and specific modulus, better oxidation resistance and creep resistance, and more wear resistance than titanium alloys. High-temperature high-strength structural materials. With the rapid development of aerospace, military vehicles, marine equipment, and lightweight weapons and equipment, titanium-based composites have become an important lightweight, high-strength strategic structural material with irreplaceable application value. However, particle-reinforced titanium-based composites manufactured by current ingot metallurgy (such as vacuum casting + high-temperature...

Claims

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Application Information

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IPC IPC(8): B22F9/14B22F1/00C22C14/00C22C32/00B22F10/28B33Y70/10B82Y30/00B82Y40/00
CPCB22F9/14C22C14/00C22C32/0005B33Y70/10B82Y30/00B82Y40/00B22F1/065B22F1/054B22F1/14
Inventor 牛红志殷宝国谭浩张德良
Owner NORTHEASTERN UNIV
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