文档介绍：: .
材料与冶金学 Co 含量的增加，合金中析出的 B2 相
逐渐减少，从而导致其屈服强度下降。Co45Cr25Al10Fe10Ni10 合金的屈服强度约为
850 MPa, 而 Co57Cr25Al6Fe6Ni6 合金的屈服强度下降到不足 500 MPa. 在另一方
面，随着 Co 含量的增加，Co51Cr25Al8Fe8Ni8 和 Co57Cr25Al6Fe6Ni6 合金在拉伸过
程中均发生了形变诱导的 FCC-HCP 型马氏体相变，使得它们拥有着接近 50%的
良好塑性。
关键词：高熵合金；力学性能；沉淀强化；形变诱导相变
中图分类号：TG 135 文献标识码：A
Effect of Co content on microstructure and mechanical
properties of CoxCr25(AlFeNi)75-x high entropy alloy
Huang Dong, Zhuang Yanxin
(Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education),
Northeastern University, Shenyang 110819, China)
Abstract: In view of the low yield strength of FCC based TRIP high entropy alloy,
CoxCr25(AlFeNi)75-x alloy system was designed and prepared to realize the synergy
between precipitation strengthening of B2 phase and FCC-HCP type deformation
收稿日期：2022-05-18.
基金项目：博士生科研创新项目（N2009007）
作者简介：黄东（1993-），男，博士研究生。庄艳歆（1971-），女，教授，******@ transformation. The effect of Co content on the microstructure and mechanical
properties of the alloy system was investigated by means of thermodynamic simulation
and experiment. The results show that with the increase of Co content, the precipitated
B2 phase in the alloy gradually decreases, resulting in the decrease of its yield strength.
The yield strength of Co45Cr25Al10Fe10Ni10 alloy is about 850 MPa, while the yield