Enhanced plastic deformation capacity in hexagonal-close-packed medium entropy alloys via facilitating cross slip

Xiaocan Wen,Hailong Huang,Honghui Wu,Meisa Zhou,Yeqiang Bu,Xiaoyuan Yuan,Suihe Jiang,Hui Wang,Xiongjun Liu,Hongtao Wang,Jiabin Liu,Yuan Wu,Zhaoping Lu

Journal of Materials Science & Technology（2023）

引用 7|浏览17

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摘要

•A novel Hfx(ZrTi)100-x (x=0, 20, 33 and 40 at.%) MEAs with single phase HCP was developed.•Addition of Hf enhanced the strain hardening rate and tensile ductility.•Effects of Hf on stacking fault energy and dislocation slip behavior were revealed.•Facilitated cross slip and pyramidal dislocations is responsible for the outstanding mechanical properties.

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关键词

Cross slip,Pyramidal dislocation,Stacking fault energy,First principles calculations,Ductility

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