非等原子Alx(FeCoNiCr)88-xMn12高熵合金的微观组织及力学性能

doi:10.11896/cldb.22040007

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Abstract Al_x(FeCoNiCr)_88-xMn₁₂ (x=0,4,12,24) high-entropy alloys were prepared by dry ball milling, vacuum hot-pressing sintering and annealing process. The effect of different Al content and annealing temperature on the microstructure and mechanical properties of the alloys was stu-died. The results show that Al_x(FeCoNiCr)_88-xMn₁₂ HEAs were composed of FCC+BCC dual phases, and the BCC phases increased with the increase of Al content. The Al₄(FeCoNiCr)₈₄Mn₁₂ alloy had higher comprehensive mechanical properties, the compressive yield strength was 572.7 MPa, the ultimate compressive strength was 1 759.3 MPa and the fracture strain was 39.9%. The mechanical properties of the alloy were further improved and the texture in BCC phases was more pronounced after annealing at 650 ℃ for 1 h. The excellent mechanical properties of the Al₄(FeCoNiCr)₈₄Mn₁₂ alloy are attributed to the second-phase strengthening and Hall-Petch effect, and the adjustment effect of small angle grain boundaries of BCC phases.

Key words： high-entropys alloys (HEAs) microstructure mechanical properties second-phase strengthening texture

Published: Online: 2022-07-26

CLC number:

TG146.2

Fund:Scientific Research Program of Shaanxi University of Technology, China (SLG1906), the Scientific Research Startup Program for Introduced Talents of Shaanxi University of Technology, China (SLGQD1801).

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	Articles by authors
	ZHAO Kun
	BO Haiwa
	AI Taotao
	LIAO Zhongni
	DING Liu
	FENG Xiaoming

Cite this article:

ZHAO Kun,BO Haiwa,AI Taotao, et al. Microstructure and Mechanical Properties of Non-equiato Al_x(FeCoNiCr)_88-xMn₁₂ High-entropy Alloys[J]. Materials Reports, 2022, 36(14): 22040007-7.

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http://www.mater-rep.com/EN/10.11896/cldb.22040007 OR http://www.mater-rep.com/EN/Y2022/V36/I14/22040007

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