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
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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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