Microstructure and Mechanical Properties of Non-equiato Alx(FeCoNiCr)88-xMn12 High-entropy Alloys

被引：0
|
作者：
Zhao K. [1 ]
Bo H. [1 ,2 ]
Ai T. [1 ,2 ]
Liao Z. [1 ,2 ]
Ding L. [1 ,2 ]
Feng X. [1 ,2 ]
机构：
[1] School of Materials Science and Engineering, Shaanxi University of Technology, Shaanxi, Hanzhong
[2] National & Local Joint Engineering Laboratory for Environmental Protection Technology for Comprehensive Utilization of Slag, Shaanxi University of Technology, Shaanxi, Hanzhong
来源：
Cailiao Daobao/Materials Reports | 2022年 / 36卷 / 14期
关键词：
high-entropys alloys (HEAs); mechanical properties; microstructure; second-phase strengthening; texture;
D O I：
10.11896/cldb.22040007
中图分类号：
学科分类号：
摘要：
Alx(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 studied. The results show that Alx(FeCoNiCr) 88-x Mn12 HEAs were composed of FCC+BCC dual phases, and the BCC phases increased with the increase of Al content. The Al4 (FeCoNiCr) 84 Mn12 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) 84 Mn12 alloy are attributed to the second-phase strengthening and Hall-Petch effect, and the adjustment effect of small angle grain boundaries of BCC phases. © 2022 Cailiao Daobaoshe/ Materials Review. All rights reserved.
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