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Method for preparing tial-based composite powder material

A composite powder and composite material technology, which is applied in the field of TiAl-based composite materials and the preparation of TiAl-based composite powder materials, can solve the problems of low density of composite materials, inability to meet 3D printing, and complex processes, and improve the quality of 3D printing. Excellent performance, high sphericity and uniform particle size

Active Publication Date: 2016-03-30
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composite materials prepared by these methods have disadvantages such as low density, complicated process, and high energy consumption, which cannot meet the requirements of 3D printing.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The method for preparing the TiAl-based composite powder material in this embodiment comprises the following steps:

[0022] Stp1: Take aluminum powder, titanium powder and reinforcing material and mix them evenly;

[0023] Stp2: ball milling the mixture of Stp1 to obtain a TiAl-based composite material;

[0024] Stp3: TiAl-based composite material obtained by plasma spheroidization treatment and ball milling of Stp2.

[0025] in:

[0026] The volume parts of aluminum powder taken in Stp1 are 40 parts, the volume parts of titanium powder are 55 parts, and the volume parts of reinforcing material are 10 parts;

[0027] The particle size range of the aluminum powder taken in Stp1 is 15-45um, the particle size of the titanium powder is 15-45um, and the particle size of the reinforcing material is 10-30um;

[0028] The reinforcing material in Stp1 is graphite;

[0029] During the Stp2 ball milling process, the mass ratio of balls to materials is 5:1, the speed is 800rpm...

Embodiment 2

[0035] The method for preparing the TiAl-based composite powder material in this embodiment comprises the following steps:

[0036] Stp1: Take aluminum powder, titanium powder and reinforcing material and mix them evenly;

[0037] Stp2: ball milling the mixture of Stp1 to obtain a TiAl-based composite material;

[0038] Stp3: TiAl-based composite material obtained by plasma spheroidization treatment and ball milling of Stp2.

[0039] in:

[0040] The volume parts of aluminum powder taken in Stp1 are 35 parts, the volume parts of titanium powder are 66 parts, and the volume parts of reinforcing material are 3 parts;

[0041] The particle size of the aluminum powder taken in Stp1 is 15-45um, the particle size of the titanium powder is 15-45um, and the particle size of the reinforcing material is 10-30um;

[0042] The reinforcing material in Stp1 is graphene;

[0043] During the Stp2 ball milling process, the mass ratio of balls to materials is 8:1, the speed is 200rpm, and t...

Embodiment 3

[0049] The method for preparing the TiAl-based composite powder material in this embodiment comprises the following steps:

[0050] Stp1: Take aluminum powder, titanium powder and reinforcing material and mix them evenly;

[0051] Stp2: ball milling the mixture of Stp1 to obtain a TiAl-based composite material;

[0052] Stp3: TiAl-based composite material obtained by plasma spheroidization treatment and ball milling of Stp2.

[0053] in:

[0054] The volume parts of aluminum powder taken in Stp1 are 50 parts, the volume parts of titanium powder are 48 parts, and the volume parts of reinforcing material are 18 parts;

[0055] The particle size of the aluminum powder taken in Stp1 is 15-45um, the particle size of the titanium powder is 15-45um, and the particle size of the reinforcing material is 10-30um;

[0056] The reinforcing material in Stp1 is carbon fiber;

[0057] During the Stp2 ball milling process, the mass ratio of the ball to the material is 1:1, the rotating sp...

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Abstract

The invention discloses a method for preparing a TiAl-based composite powder material. The method includes first evenly mixing aluminum powder, titanium powder and a reinforcing material, then conducting ball grinding on a raw material mixture to obtain a TiAl-based composite material and finally conducting plasma spheroidizing ball grinding on the obtained TiAl-based composite material to obtain a product. The product includes the following components by volume: 30-55 parts of aluminum powder, 45-70 parts of titanium powder and 0.2 part to 20 parts of reinforcing material. The reinforcing material is boron, graphite, graphene, carbon nano tube or carbon fiber. The sphericity degree of the obtained composite material powder is higher than 80%, the particle size range is 0-45 mum, and the powder is especially suitable for laser quick forming 3D printing. The reinforcing material of appropriate quantity is added into the TiAl alloy matrix and is well combined with a matrix material through the appropriate process, the high temperature performance of the TiAl alloy is improved, and the 3D printing performance of the TiAl alloy is improved.

Description

technical field [0001] The invention belongs to the field of composite materials, and relates to TiAl-based composite materials, in particular to a method for preparing TiAl-based composite powder materials. Background technique [0002] Improving the propulsion ratio of the engine is the core issue of aviation technology. Titanium alloys are light in weight, high in specific strength, and excellent in high temperature creep performance, and have been used to manufacture engines, compressor blades and discs. However, the small deformation coefficient of titanium alloy, high cutting temperature, serious chilling phenomenon, and poor machining performance have affected the promotion of this technology. In addition, titanium alloys are expensive, and conventional cutting methods still have the problem of wasting raw materials. [0003] 3D printing technology, also known as additive manufacturing technology, uses a computer program to slice the designed three-dimensional model ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/04C22C1/05C22C47/14
Inventor 纪丽娜王国玉范树迁段宣明
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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