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Phase Transition of As-Milled and Annealed CrCuFeMnNi High-Entropy Alloy Powder

School of Physics and Engineering, Key Lab of Materials Physics, Zhengzhou University, No.75 Daxue Road, Henan Province, Zhengzhou 450052, P. R. China

College of Science, Henan Institute of Engineering, No.1, Xianghe Road, Xinzheng, Zhengzhou 451191, P. R. China

E-mail Address: Zhaoruifeng0@163.com

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Bo Ren

School of Mechanical Engineering, Henan Institute of Engineering, No.1, Xianghe Road, Xinzheng, Zhengzhou 451191, P. R. China

E-mail Address: Renbo193513@163.com

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Guo-Peng Zhang

School of Physics and Engineering, Key Lab of Materials Physics, Zhengzhou University, No.75 Daxue Road, Henan Province, Zhengzhou 450052, P. R. China

E-mail Address: gpzhang@zzu.edu.cn

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Zhong-Xia Liu

http://orcid.org/0000-0003-4794-4546

School of Physics and Engineering, Key Lab of Materials Physics, Zhengzhou University, No.75 Daxue Road, Henan Province, Zhengzhou 450052, P. R. China

E-mail Address: liuzhongxia@zzu.edu.cn

Corresponding author.

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, and

Jian-Jian Zhang

School of Physics and Engineering, Key Lab of Materials Physics, Zhengzhou University, No.75 Daxue Road, Henan Province, Zhengzhou 450052, P. R. China

E-mail Address: zhangjj@163.com

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https://doi.org/10.1142/S179329201850100XCited by:7 (Source: Crossref)

Abstract

The CrCuFeMnNi high entropy alloy (HEA) powder was synthesized by mechanical alloying. The effects of milling time and subsequent annealing on the structure evolution, thermostability and magnetic property were investigated. After 50h of milling, the CrCuFeMnNi HEA powder consisted of a major FCC phase and a small amount of BCC phase. The crystallite size and strain lattice of 50h-ball-milled CrCuFeMnNi HEA powder were 12nm and 1.02%, respectively. The powder exhibited refined morphology and excellent chemical homogeneity. The supersaturated solid solution structure of the as-milled HEA powder transformed into FCC1, FCC2, a small amount of BCC and $ρ$ $ρ$ phase in annealed state. Most of the BCC phase decomposed into FCC (mainly FCC2 phase) and $ρ$ $ρ$ phases, and the dynamic phase transition was almost in equilibrium at 900 $^{\circ}$ $^{\circ}$ C. The saturated magnetization and coercivity force of the 50h-ball-milled CrCuFeMnNi HEA powder were respectively 16.1emu/g and 56.2Oe.

Keywords:

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