Issue 18, 2022
From the journal:

Nanoscale Advances

Deformation twinning via the motion of adjacent dislocations in a nanostructured CoCrFeNi high-entropy alloy

Jinpo Zhai,a   Zhigang Yan ORCID logo *b  and  Hao Yu*a  

* Corresponding authors

a School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
E-mail: yuhao@ustb.edu.cn

b Analysis and Testing Center, Shenzhen Technology University, Shenzhen, Guangdong 518118, China
E-mail: yanzhigang@sztu.edu.cn

Abstract

Deformation twinning was observed in a nanostructured CoCrFeNi high-entropy alloy processed by cold rolling. A three-layer twin with two incoherent twin boundaries was identified using high-resolution transmission electron microscopy, and its twinning mechanism was analyzed. Twinning is formed by dissociated dislocations meeting on the adjacent slip plane. This twinning mechanism possibly works for low-SF materials with high dislocation density.

Graphical abstract: Deformation twinning via the motion of adjacent dislocations in a nanostructured CoCrFeNi high-entropy alloy

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Article information

DOI
https://doi.org/10.1039/D2NA00285J
Article type
Communication
Submitted
06 May 2022
Accepted
08 Aug 2022
First published
09 Aug 2022
This article is Open Access
Creative Commons BY-NC license

Nanoscale Adv., 2022,4, 3711-3717

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Deformation twinning via the motion of adjacent dislocations in a nanostructured CoCrFeNi high-entropy alloy

J. Zhai, Z. Yan and H. Yu, Nanoscale Adv., 2022, 4, 3711 DOI: 10.1039/D2NA00285J

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