High-entropy alloy reinforced high-speed steel wear-resistant material and preparation method thereof

A high-entropy alloy and wear-resistant material technology, applied in additive processing, additive manufacturing, etc., can solve problems such as high cost and insufficient high-temperature wear resistance, and achieve fewer molding defects, improved molding finish, and improved service life. Effect

Active Publication Date: 2022-08-09
河北中凯新创耐磨材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a high-entropy alloy reinforced high-speed steel wear-resistant material to overcome the current high-speed steel roll The use of wear-resistant materials has problems such as insufficient high-temperature wear resistance and high cost

Method used

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  • High-entropy alloy reinforced high-speed steel wear-resistant material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Take Fe, Cr, Co, Ni, Hf, B powders with a purity of 99% and a particle size of 5-20 microns. According to the atomic ratio: 1:1:1:1:0.2:0.8, weigh the mixed powder and add the mass fraction. 5% anhydrous ethanol is used as the dispersing medium, which is put into the stainless steel ball mill jar, and the stainless steel grinding ball is put into the ball-to-material ratio of 5:1, and then the ball mill jar is evacuated to 10 -3 Pa, mechanical alloying was achieved by ball milling in a vacuum ball mill, the ball milling speed was 300 r / min, and the ball milling time was 6 hours. Then, the alloy powder was dried in a vacuum drying box at 75 °C for 3 hours to obtain FeCrCoNiHf 0.2 B 0.8 The high-entropy alloy powder obtained is sieved to obtain a high-entropy alloy powder below 20 microns, which is used for later use.

[0035] The matrix of high-speed steel is high-speed steel containing Cr, Mo, V, W, Co, Al and B, and the specific components are calculated by mass perce...

Embodiment 2

[0038] The Fe, Cr, Co, Ni, Hf, B powders with a purity of 99% and a particle size of 5-20 microns are weighed according to the atomic ratio: 1:1:1:1:0.8:0.2, and the mass fraction is added. 5% anhydrous ethanol is used as the dispersing medium, which is put into the stainless steel ball mill jar, and the stainless steel grinding ball is put into the ball-to-material ratio of 5:1, and then the ball mill jar is evacuated to 10 -3 Pa, mechanical alloying was achieved by ball milling in a vacuum ball mill, the ball milling speed was 300 r / min, and the ball milling time was 6 hours. Then, the alloy powder was dried in a vacuum drying box at 75 °C for 3 hours to obtain FeCrCoNiHf 0.8 B 0.2 The high-entropy alloy powder obtained is sieved to obtain a high-entropy alloy powder below 20 microns, which is used for later use.

[0039] The matrix of high-speed steel is high-speed steel containing Cr, Mo, V, W, Co, Al and B, and the specific components are calculated by mass percentage: C...

Embodiment 3

[0042] Take Fe, Cr, Co, Ni, Hf, B powders with a purity of 99% and a particle size of 5-20 microns. According to the atomic ratio: 1:1:1:1:0.2:0.8, weigh the mixed powder and add the mass fraction. 5% anhydrous ethanol is used as the dispersing medium, which is put into the stainless steel ball mill jar, and the stainless steel grinding ball is put into the ball-to-material ratio of 5:1, and then the ball mill jar is evacuated to 10 -3 Pa, mechanical alloying was achieved by ball milling in a vacuum ball mill, the ball milling speed was 300 r / min, and the ball milling time was 6 hours. Then, the alloy powder was dried in a vacuum drying box at 75 °C for 3 hours to obtain FeCrCoNiHf 0.2 B 0.8 The high-entropy alloy powder is sieved to obtain a high-entropy alloy powder below 20 microns for use.

[0043] The matrix of high-speed steel is high-speed steel containing Cr, Mo, V, W, Co, Al and B, and the specific components are calculated by mass percentage: C0.75%, Si 0.30%, Mn 0....

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Abstract

The invention belongs to the technical field of metal materials, and relates to a high-entropy alloy reinforced high-speed steel wear-resistant material which is formed by compounding a high-entropy alloy and a high-speed steel matrix, the high-entropy alloy is FeCrCoNiHf (0.2 + x) B (0.8-x), the atomic ratio of Fe, Cr, Co, Ni, Hf and B in the high-entropy alloy is 1: 1: 1: 1: (0.2 + x): (0.8-x), x is equal to 0-0.6, the matrix is a high-speed steel material, and the high-entropy alloy is FeCrCoNiHf (0.2 + x) B (0.8-x). The mass fraction ratio of the high-entropy alloy to the high-speed steel matrix is (3-10): (97-90). The invention also discloses a preparation method of the material. The comprehensive performance of the wear-resistant material disclosed by the invention is greatly improved, particularly, key wear-resistant indexes such as high-temperature toughness and red hardness are superior to those of the existing high-speed steel wear-resistant material, the forming defects are few, and major defect accidents such as material stripping and meat falling accidents are controlled; and the high-entropy alloy is added to replace strengthening phases such as carbides separated out by depending on element supersaturation in high-alloy high-speed steel, alloying elements of the wear-resistant material are reduced, and the cost is reduced. The service life is prolonged, and the dimensional stability and the material forming finishing degree are improved.

Description

technical field [0001] The invention belongs to the technical field of metal materials, relates to high-speed steel wear-resistant materials, and particularly relates to a high-entropy alloy reinforced high-speed steel wear-resistant material and a preparation method thereof. Background technique [0002] Alloys with high wear resistance at high temperatures are highly desirable for applications under modern extreme working conditions, just exemplified in the field of metal material processing. Rolls are an indispensable tool and consumable key component for rolling steel or non-ferrous metals. Their quality and performance directly determine the rolling efficiency of the rolling mill and the quality of the rolled metal. More than 3,000 steel products are usually used. Most have to go through the rolling stage. Throughout the development of the world iron and steel industry, with the continuous development of steel varieties and rolling technology, higher and higher require...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/00B22F9/04C22C38/02C22C38/04C22C38/22C22C38/24C22C38/30C22C38/06C22C38/32C22C33/06C22C33/02B22F10/28B33Y10/00B33Y70/00C22C38/44C22C38/46C22C38/52C22C38/54
CPCC22C30/00C22C19/07C22C27/00B22F9/04C22C38/02C22C38/04C22C38/22C22C38/24C22C38/30C22C38/06C22C38/32C22C33/06C22C33/0207B22F10/28B33Y10/00B33Y70/00C22C38/44C22C38/46C22C38/52C22C38/54C22C38/002B22F2009/041B22F2009/043Y02P10/25
Inventor 王宏明黄泽洪周俊龙卢相军刘梓成代明杰
Owner 河北中凯新创耐磨材料科技有限公司
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