Microstructures and mechanical properties of FeCoNi(MoW)x high-entropy alloys

被引：8
|
作者：
Pan, Lei [1 ,2 ]
Liu, AnJin [1 ,2 ]
Wang, Lin [1 ,2 ]
Cheng, XingWang [1 ,2 ]
机构：
[1] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China
[2] Natl Key Lab Sci & Technol Mat Shock & Impact, Beijing 100081, Peoples R China
来源：
MATERIALS LETTERS | 2022年 / 308卷
关键词：
FeCoNi(MoW)(x) high-entropy alloys; Microstructure; Mechanical properties; mu phase; Metals and alloys; OXIDATION BEHAVIOR;
D O I：
10.1016/j.matlet.2021.131250
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
FeCoNi(MoW)(x) (x = 0.2, 0.3, 0.5) high-entropy alloys with different W and Mo additions are investigated in this paper. There was segregation of W and Mo elements in the as-cast alloy. FeCoNi(MoW)(x) alloys are mainly FCC phase and mu phase. With the increase of W and Mo content, more it phase is precipitated in the FCC matrix. After room temperature quasi-static compressive and tensile tests, with the increase of mu phase content, due to its precipitation strengthening effect, the FeCoNi(MoW)(x) alloy compressive yield strength increase from 288 MPa to 930 MPa. But its inherent brittleness resulte in a significant decrease in plasticity, when x = 0.5, the elongation is only 0.45%.
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页数：4
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