Dislocation mechanisms and 3D twin architectures generate exceptional strength-ductility-toughness combination in CrCoNi medium-entropy alloy

Zijiao Zhang; Hongwei Sheng; Zhangjie Wang; Bernd Gludovatz; Ze Zhang; Easo P. George; Qian Yu; Scott X. Mao; Robert O. Ritchie

doi:10.1038/ncomms14390

Nature Communications (Feb 2017)

Dislocation mechanisms and 3D twin architectures generate exceptional strength-ductility-toughness combination in CrCoNi medium-entropy alloy

Zijiao Zhang,
Hongwei Sheng,
Zhangjie Wang,
Bernd Gludovatz,
Ze Zhang,
Easo P. George,
Qian Yu,
Scott X. Mao,
Robert O. Ritchie

Affiliations

Zijiao Zhang: Department of Materials Science & Engineering, Center of Electron Microscopy & State Key Laboratory of Silicon Materials, Zhejiang University
Hongwei Sheng: Department of Physics and Astronomy, George Mason University
Zhangjie Wang: Department of Materials Science and Engineering, Xi’an Jiaotong University
Bernd Gludovatz: Materials Sciences Division, Lawrence Berkeley National Laboratory
Ze Zhang: Department of Materials Science & Engineering, Center of Electron Microscopy & State Key Laboratory of Silicon Materials, Zhejiang University
Easo P. George: Materials Sciences & Technology Division, Oak Ridge National Laboratory
Qian Yu: Department of Materials Science & Engineering, Center of Electron Microscopy & State Key Laboratory of Silicon Materials, Zhejiang University
Scott X. Mao: Department of Materials Science & Engineering, Center of Electron Microscopy & State Key Laboratory of Silicon Materials, Zhejiang University
Robert O. Ritchie: Materials Sciences Division, Lawrence Berkeley National Laboratory

DOI: https://doi.org/10.1038/ncomms14390
Journal volume & issue: Vol. 8, no. 1
pp. 1 – 8

Abstract

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Materials that show twinning-induced plasticity can offer unusual combinations of strength and ductility. Here, authors study deformation twinning and dislocation behaviour in a medium-entropy alloy CrCoNi and find a three-dimensional (3D) hierarchical twin network that forms from the activation of three twinning systems.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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