高熵硬质合金WC-AlCo<sub>0.4</sub>CrFeNi<sub>2.7</sub>的制备及表征

doi:10.11896/cldb.22060288

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Abstract AlCo_0.4CrFeNi_2.7 high entropy alloy (HEA) powder prepared by gas atomization and tungsten carbide (WC) was used as binder phase and hard phase, respectively, and high-entropy cemented carbide was prepared by spark plasma sintering. The effects of binder phase content and sintering temperature on the microstructure and mechanical properties of cemented carbide were studied. The results show that the high-entropy cemented carbide with a binder phase ratio of 10wt% and sintered at 1 300 ℃ has the best mechanical properties, the hardness and fracture toughness are 1 575HV₃₀ and 9.2 MPa·m^1/2 , respectively. Compare to the influence of the binder phase content on performance, the effect of sintering temperature on performance is more significant. They affect the mechanical properties of high-entropy cemented carbide by influencing the grain size, relative density and production of harmful brittle intermetallic compounds of tungsten carbide, respectively.

Key words： high-entropy alloy cemented carbides binder phase

Published: 25 February 2024 Online: 2024-03-01

CLC number:

TG135.3

Fund:Guangdong Basic and Applied Basic Research Foundation (2019B1515120020), and the Funds for Creative Research Groups of China (51921001).

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	ZHANG Mingchen
	GUO Ruipeng
	ZHANG Yong

Cite this article:

ZHANG Mingchen,GUO Ruipeng,ZHANG Yong. Preparation and Characterization of High-entropy Cemented Carbide WC-AlCo_0.4CrFeNi_2.7[J]. Materials Reports, 2024, 38(4): 22060288-6.

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http://www.mater-rep.com/EN/10.11896/cldb.22060288 OR http://www.mater-rep.com/EN/Y2024/V38/I4/22060288

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