L12-type Nano-ordered Precipitation Phase Reinforced (FeNiCoCr)93Al5Ti2 High Entropy Alloy

被引：0
作者：
Wang, Peijin [1 ]
Zhuo, Jiale [1 ]
Ai, Taotao [1 ,2 ]
Dong, Hongfeng [1 ,2 ]
机构：
[1] School of Materials Science and Engineering, Shaanxi University of Technology, Shaanxi, Hanzhong
[2] National & Local Joint Engineering Laboratory for Slag Comprehensive Utilization and Environmental Technology, Shaanxi University of Technology, Shaanxi, Hanzhong
来源：
Cailiao Daobao/Materials Reports | 2024年 / 38卷 / 22期
关键词：
high entropy alloy; mechanical property; microstructure; nano-precipitation phase;
D O I：
10.11896/cldb.23110207
中图分类号：
学科分类号：
摘要：
High entropy alloys(HEAs)with face-centered cubic structure strengthened by L12-type nano-ordered precipitates can obtain ideal strength-ductility equilibrium. In the present study,(FeNiCoCr)93Al5Ti2 HEA reinforced by L12-type nano-ordered precipitation phase was prepared by hot pressing technique. It could be found that the alloy was consisted of FCC matrix phase,a small amount of Cr-rich phase,and Fe-rich phase. Spheroidal L12-type structured Ni3(Al,Ti)particles were precipitated inside the matrix grains and had a coherent relationship with the matrix phase. It was estimated that the incremental contribution of ordered strengthening to the yield strength of the alloy was 221. 0 MPa,which was much higher than that of the coherent dispersion strengthening and the modulus mismatch strengthening. The(FeNiCoCr)93Al5Ti2 HEA exhibited excellent compressive properties,as its engineered yield strength,compressive strength,and compressive strain were 717 MPa,2 304 MPa, and 44%,respectively. © 2024 Cailiao Daobaoshe/ Materials Review. All rights reserved.
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