Theoretical and experimental study of phase transformation and twinning behavior in metastable high-entropy alloys

Zhibiao Yang ¹Song Lu ²Yanzhong Tian ³Zijian Gu ³Jian Sun ⁴Levente Vitos⁵

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作者信息

1. Shanghai Key Laboratory of Advanced High-Temperature Materials and Precision Forming,School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Applied Materials Physics,Department of Materials Science and Engineering,Royal Institute of Technology,Stockholm SE-100 44,Sweden
2. Applied Materials Physics,Department of Materials Science and Engineering,Royal Institute of Technology,Stockholm SE-100 44,Sweden
3. Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education),School of Materials Science and Engineering,Northeastern University,Shenyang 110819,China
4. Shanghai Key Laboratory of Advanced High-Temperature Materials and Precision Forming,School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China
5. Applied Materials Physics,Department of Materials Science and Engineering,Royal Institute of Technology,Stockholm SE-100 44,Sweden;Division of Materials Theory,Department of Physics and Materials Science,Uppsala University,P.O.Box 516,Uppsala SE-75120,Sweden;Research Institute for Solid State Physics and Optics,Wigner Research Center for Physics,Budapest H-1525,P.O.Box 49,Hungary
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Abstract

Combined theoretical and experimental efforts are put forward to study the critical factors influencing deformation mode transitions in face-centered cubic materials.We revisit the empirical relationship be-tween the stacking fault energy(SFE)and the prevalent deformation mechanism.With ab initio calcu-lated SFE,we establish the critical boundaries between various deformation modes in the model Cr-Co-Ni solid solution alloys.Satisfying agreement between theoretical predictions and experimental observa-tions are reached.Our findings shield light on applying quantum mechanical calculations in designing transformation-induced plasticity and twinning-induced plasticity mechanisms for achieving advanced mechanical properties.

Key words

Metastable alloys/Stacking fault energy/Twinning/Martensitic transformation/Co-Cr-Ni alloys

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基金项目

financial support is provided by the Major State Basic Research Development Program of China(2016YFB0701405)

KTH-SJTU collaborative research and development seed grant,the Swedish Research Council,the Swedish Foundation for Strategic(ResearchprojectOTKA128229)

Fun-damental Research Funds for the Central Universities(N180204015)

Swedish National Infrastructure for Computing SNIC)at the National Supercomputer centre in Linkoping partially funded by the(2018-05973)

出版年

2022

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI

影响因子：0.657

ISSN：1005-0302

参考文献量36

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