Preparation method of tungsten-based high-gravity alloy material

An alloy material and high specific gravity technology, which is applied in the preparation of tungsten-based high specific gravity alloy materials and the preparation of high specific gravity alloy materials, can solve the problem of the decrease in the relative content of the hard phase, the difficulty in maintaining the composition of the binder phase, and the growth of grains, etc. problem, to achieve the effect of ensuring the relative content of the W phase remains unchanged, inhibiting dissolution, and achieving excellent performance

Inactive Publication Date: 2018-12-18
四川煜兴新型材料科技有限公司
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Problems solved by technology

[0005] The present invention aims at the current preparation of tungsten-based high specific gravity alloys, the binder phase components in the multi-component complex alloying or pre-alloying treatment of the binder phase are difficult to maintain, and the solid solution of W in the binder phase leads to grain growth and hardness. To solve the problem of the decrease of the relative content of the solid phase, a method for the preparation of tungsten-based high specific gravity alloy materials based on high-entropy alloy bonding was proposed

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  • Preparation method of tungsten-based high-gravity alloy material

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example 1

[0016] Example 1: Prepare tungsten-based high specific gravity alloy material according to the following steps:

[0017] (1) Preparation of five-component amorphous binder phase powder: Weigh various raw material powders, according to the atomic percentage Co:Ni:Cu:Cr:Fe=1:1:1:1:0.5; the weighed raw materials The powder is stirred and ball milled, the ball milling speed is 600r / min, the ball-to-material ratio of the ball mill is 5:1, and the WC-Co ball with a diameter of 4mm is used. The ball milling medium is absolute ethanol, and the amount added is 18%, filled with 1kPa argon for protection during the ball milling process, the ball milling time is 4h, the ball milling is 1h intermittent 12min, after the ball milling is finished, it is filtered with a 400 mesh screen, dried at 92°C, and passed through a 100 mesh sieve to prepare Pentamorphic binder phase powder;

[0018] (2) Preparation of mixture of W-pentamorphous binder phase powder: Weigh W powder and pentamate amorphou...

example 2

[0020] Example 2: Prepare tungsten-based high specific gravity alloy material according to the following steps:

[0021] (1) Preparation of five-component amorphous binder phase powder: Weigh various raw material powders, according to the atomic percentage Co:Ni:Cu:Cr:Fe=1:1:1:1:1.5; the weighed raw materials The powder is stirred and ball milled, the ball milling speed is 550r / min, the ball-to-material ratio of the ball mill is 5:1, the WC-Co ball with a diameter of 4mm is used, the ball milling medium is absolute ethanol, and the amount added is 19%, filled with 1kPa argon for protection during the ball milling process, the ball milling time is 5h, the ball milling is 1h intermittent 15min, after the ball milling is finished, it is filtered with a 400 mesh screen, dried at 99°C, and passed through a 100 mesh sieve to prepare Pentamorphic binder phase powder;

[0022] (2) Preparation of mixture of W-pentamorphous binder phase powder: Weigh W powder and pentamate amorphous bi...

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Abstract

The invention discloses a preparation method of a tungsten-based high-gravity alloy material. The preparation method is characterized in that quinary amorphous bonded-phase powder of which the proportion of Co to Ni to Cu to Cr to Fe is 1:1:1:1:(0.5 to 1.5) is prepared first by adopting an intermittent mixing ball mill; then the quinary amorphous bonded-phase powder is mixed with W powder; and finally, the powder is put into a die for SPS sintering, the amorphous bonded phase is crystallized by adopting quick heating and short-term insulating processes, and finally, the tungsten-based high-gravity alloy of which the bonded phase is high-entropy alloy of a face-centered cubic structure is prepared. According to the preparation method, the problems of difficulty in keeping bonded-phase components when polynary complex alloying or prealloying treatment is performed on the bonded phase and grain growth and low relative content of the W hard phase due to solid solution of W in the bonded phase when the tungsten-based high-gravity alloy is prepared at present are solved, and the preparation method can be used for preparing the tungsten-based high-gravity alloy used in the fields of aerospace, national defense and military industry, mechanical engineering and the like.

Description

technical field [0001] The invention relates to a preparation method of a high specific gravity alloy material, in particular to a preparation method of a tungsten-based high specific gravity alloy material, and belongs to the field of metal materials. Background technique [0002] Tungsten-based high-density alloys have excellent properties such as high density, high strength and hardness, good electrical conductivity, low thermal expansion coefficient, high corrosion resistance and oxidation resistance, and can be used as bullet cores, shielding materials and contact materials for armor-piercing projectiles, and are widely used in Military, mechanical, aviation and other fields. Tungsten-based high-density alloys are formed by bonding hard and brittle tungsten particles with strong and tough metals such as Ni and Fe. As the service conditions become more and more severe, the traditional Co-bonded tungsten-based high-density alloys are becoming more and more difficult to m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C27/04C22C1/04
CPCC22C1/045C22C27/04
Inventor 曹晨煜江雯倩
Owner 四川煜兴新型材料科技有限公司
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