A CoCrFeNiMnSi high entropy alloy showing a good combination of shape memory effect and mechanical properties
Liao Q. 1Jing T. 1Wang Y. 1Peng H. 1Wen Y.1
扫码查看
点击上方二维码区域，可以放大扫码查看
作者信息
1. School of Mechanical Engineering Sichuan University
折叠
Abstract
? 2022 Elsevier B.V.We realized a good combination of shape memory effect and mechanical properties in a hot-rolled Fe47.7Mn15.5Co9.8Cr10.8Ni5.1Si11.1 high entropy alloy (HEA) by Si alloying and proper heat treatment to guarantee a low density of annealing twin boundaries. Its maximal recovery strain of 5.7% reached the level that conventional FeMnSi-based and Co-based shape memory alloys (SMAs) showing the same FCC to HCP martensitic transformation can realize. It showed a better combination of ultimate tensile strength and fracture strain than the reported CoCrFeNiMn-based HEAs with FCC matrix did. This result showed that to marry the shape memory effect with the excellent mechanical properties will be a promising direction for developing novel HEAs.
NSTL
Elsevier