Microstructural Transition of (CuFeMnNi)1-xCrx (x=0-0.25) High-Entropy Alloys

被引：9
|
作者：
Chen, X. [1 ,2 ]
Zhai, S. D. [1 ,2 ]
Gao, D. [1 ,2 ]
Xu, J. [1 ,2 ,3 ]
Liu, Y. [1 ,2 ,4 ]
Liu, Y. [1 ,2 ,4 ]
Yin, F. C. [1 ,2 ]
机构：
[1] Xiangtan Univ, Sch Mat Sci & Engn, Key Lab Mat Design & Preparat Technol Hunan Prov, Xiangtan 411105, Peoples R China
[2] Xiangtan Univ, Sch Mat Sci & Engn, Hunan Prov Key Lab Thin Film Mat & Devices, Xiangtan 411105, Peoples R China
[3] Guangdong Inst Mat & Proc, Guangdong Prov Key Lab Technol & Applicat Met Tou, Guangzhou 510650, Guangdong, Peoples R China
[4] Xiangtan Univ, Sch Mech Engn, Xiangtan 411105, Peoples R China
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2019年 / 28卷 / 07期
基金：
中国国家自然科学基金;
关键词：
CuCrFeMnNi high-entropy alloy; microstructure; transition; Vickers hardness; MECHANICAL-PROPERTIES; BEHAVIOR;
D O I：
10.1007/s11665-019-04171-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of Cr on the microstructure and hardness of the cast and annealed (CuFeMnNi)(1-x)Cr-x (x = 0, 0.05, 0.1, 0.15, 0.2 and 0.25) high-entropy alloys were investigated systematically. The results revealed that the microstructures of (CuFeMnNi)(1-x)Cr-x (x = 0, 0.05 and 0.1) alloys were composed of (Fe, Ni and Cr)-rich FCC1 and (Cu, Mn)-rich FCC2 phases. No obvious change in the dendritic size was detected between cast and related annealed alloys, indicating the excellent thermal structure stability of the studied alloys. The microstructures of the cast (CuFeMnNi)(1-x)Cr-x (x = 0.15, 0.2 and 0.25) alloys contained FCC1, FCC2 and (Cr, Fe)-rich BCC phases, while those of the annealed alloys were composed of FCC1, FCC2 and rho phases. The significant transition from BCC phase to rho phase was detected. Moreover, the hardness of both cast and annealed (CuFeMnNi)(1-x)Cr-x alloys increased with the increasing Cr content. The hardness of annealed (CuFeMnNi)(1-x)Cr-x (x = 0, 0.05 and 0.10) alloys reduced slightly as compared to corresponding cast alloys, whereas the hardness of the annealed (CuFeMnNi)(1-x)Cr-x (x = 0.15, 0.2 and 0.25) alloys increased.
引用
收藏
页码：4502 / 4509
页数：8
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