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High-strength and high-plasticity tungsten alloy material and preparation method thereof

A tungsten alloy, high plasticity technology, applied in the field of high strength and high plasticity tungsten alloy material and its preparation, to achieve the effect of small thermal expansion coefficient, excellent strength and plastic matching, inhibition of aggregation and growth

Active Publication Date: 2021-06-25
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To improve the strength and plasticity matching of tungsten alloys through Fe-Mn-Al-C alloys, there is no relevant report so far

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A high-strength and high-plasticity tungsten alloy material. Based on the total mass of the raw material components of the material as 100%, the components and their mass percentages are: 90% W, 9.9% Fe-Mn-Al-C pre-alloyed, 0.1%Y 2 o 3 , the W, Fe-Mn-Al-C pre-alloyed and Y 2 o 3 All are powdery raw materials, wherein the particle size of W powder is 3-5 μm, the particle size of Fe-Mn-Al-C pre-alloyed powder is less than or equal to 10 μm, Y 2 o 3 The particle size of the powder is 0.1-1 μm, and the purity of the three is 99.9%. Based on the total mass of the composition of the Fe-Mn-Al-C pre-alloy as 100%, the components and their mass percentages are: 26% Mn, 6% Al, 1.2% C, and the balance is Fe. After being smelted into steel ingots in a furnace, it is then obtained by water atomization and pulverization.

[0025] A method for preparing a high-strength and high-plasticity tungsten alloy material, the steps of the method are as follows:

[0026] (1) Weigh W, Fe-...

Embodiment 2

[0032] A high-strength and high-plasticity tungsten alloy material. Based on the total mass of the raw material components of the material as 100%, the components and their mass percentages are: 93% W, 6.8% Fe-Mn-Al-C pre-alloyed, 0.2%Y 2 o 3 , the W, Fe-Mn-Al-C pre-alloyed and Y 2 o 3 All are powdery raw materials, wherein the particle size of W powder is 3-5 μm, the particle size of Fe-Mn-Al-C pre-alloyed powder is less than or equal to 10 μm, Y 2 o 3The particle size of the powder is 0.1-1 μm, and the purity of the three is 99.9%. Based on the total mass of the composition of the Fe-Mn-Al-C pre-alloy as 100%, the components and their mass percentages are: 30% Mn, 8% Al, 0.8% C, and the balance is Fe. After being smelted into steel ingots in a furnace, it is then obtained by water atomization and pulverization.

[0033] The preparation of the high-strength and high-plasticity tungsten alloy material comprises the following steps:

[0034] (1) Weigh W, Fe-Mn-Al-C pre-a...

Embodiment 3

[0040] A high-strength and high-plasticity tungsten alloy material. Based on the total mass of the raw material components of the material as 100%, the components and their mass percentages are: 93% W, 6.9% Fe-Mn-Al-C pre-alloyed, 0.1%Y 2 o 3 , the W, Fe-Mn-Al-C pre-alloyed and Y 2 o 3 All are powdery raw materials, wherein the particle size of W powder is 3-5 μm, the particle size of Fe-Mn-Al-C pre-alloyed powder is less than or equal to 10 μm, Y 2 o 3 The particle size of the powder is 0.1-1 μm, and the purity of the three is 99.9%. Based on the total mass of the composition of the Fe-Mn-Al-C pre-alloy as 100%, the components and their mass percentages are: 22% Mn, 5% Al, 1.0% C, and the balance is Fe. After being smelted into steel ingots in a furnace, it is then obtained by water atomization and pulverization.

[0041] The preparation of the high-strength and high-plasticity tungsten alloy material comprises the following steps:

[0042] (1) Weigh W, Fe-Mn-Al-C pre-...

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Abstract

The invention relates to the technical field of metal materials, in particular to a high-strength and high-plasticity tungsten alloy material and a preparation method thereof. The total mass of the compositions of the high-strength and high-plasticity tungsten alloy material is 100%, and the high-strength and high-plasticity tungsten alloy material comprises the following compositions in percentage by mass, 85%-97% of W powder, 3%-15% of Fe-Mn-Al-C series pre-alloyed powder and 0-1% of Y2O3 powder, the particle size of the W powder is smaller than or equal to 10 micrometers, the particle size of the Fe-Mn-Al-C series pre-alloyed powder is smaller than or equal to 10 micrometers, and the particle size of the Y2O3 powder is smaller than or equal to 3 micrometers. According to the material, nanometer carbide reinforced austenite phase alloy serves as a matrix, and when the content of Y2O3 is 0, W is evenly distributed on the matrix; and when the content of Y2O3 is not 0, W and Y2O3 are uniformly distributed on the matrix. The material is obtained after ball-milling powder mixing, hot isostatic pressing sintering and solid solution aging treatment, and has the characteristics of high density, uniform structure, excellent strength and plasticity matching, small thermal expansion coefficient and good corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a high-strength and high-plasticity tungsten alloy material and a preparation method thereof. Background technique [0002] Tungsten alloy refers to an alloy composed of tungsten as a matrix and adding other elements to it. At present, the common tungsten alloys include tungsten-nickel-copper alloy, tungsten-nickel-iron alloy and tungsten-copper alloy. Tungsten alloy has high density (16.5~18.6g / cm 3 ), high strength (900~1300MPa), good plasticity (3~20%), excellent corrosion resistance and oxidation resistance, high melting point, good thermal and electrical conductivity, etc., so it is widely used in defense industry and civilian industry , such as rocket nozzles, die-casting molds, armor-piercing projectile cores, contacts, heating elements and heat shields, etc. [0003] However, the matching of strength and plasticity of traditional tungsten alloys is still not ide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C27/04C22C38/04C22C38/06C22C1/05C22C1/10B22F3/15B22F3/24B22F9/04
CPCC22C27/04C22C38/04C22C38/06C22C1/05B22F3/15B22F3/24B22F9/04B22F2009/043B22F2003/248
Inventor 王迎春李宗远程兴旺李壮高冲李树奎
Owner BEIJING INSTITUTE OF TECHNOLOGYGY