In-situ observation of deformation twin associated sub-grain boundary formation in copper single crystal under bending

Shuang Li; Lei Li; Ayoub Soulami; Cynthia A. Powell; Suveen Mathaudhu; Arun Devaraj; Chongmin Wang

doi:10.1080/21663831.2022.2057201

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In-situ observation of deformation twin associated sub-grain boundary formation in copper single crystal under bending

Original Reports | 更新时间：2026-08-19

- In-situ observation of deformation twin associated sub-grain boundary formation in copper single crystal under bending
- Materials Research Letters Vol. 10, Issue 7, Pages: 488-495(2022)
- 作者机构：
  
  1. a Environmental Molecular Sciences Laboratory Pacific Northwest National Laboratory Richland
  2. b Physical and Computational Sciences Directorate Pacific Northwest National Laboratory Richland
  3. c Energy and Environment Directorate Pacific Northwest National Laboratory Richland
  4. c Energy and Environment Directorate Pacific Northwest National Laboratory Richland WA USA
  5. d Metallurgical and Materials Engineering Department Colorado School of Mines Golden
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2022.2057201
  CLC：
- Online First：14 April 2022，
  
  Published：2022
- 稿件说明：
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Shuang Li, Lei Li, Ayoub Soulami, et al. In-situ observation of deformation twin associated sub-grain boundary formation in copper single crystal under bending[J]. Materials Research Letters, 2022, 10(7): 488-495.
DOI：

Shuang Li, Lei Li, Ayoub Soulami, et al. In-situ observation of deformation twin associated sub-grain boundary formation in copper single crystal under bending[J]. Materials Research Letters, 2022, 10(7): 488-495. DOI： 10.1080/21663831.2022.2057201.

摘要

Abstract

In this work

we use

in-situ

TEM in combination with finite elemental analysis to reveal the sub-grain boundary formation during bending of Cu single crystal. The deformation process is featured by dislocations propagation

formation of stacking faults and deformation twins

and subsequent formation of a sub-grain boundary. Finite element analysis of stress distribution indicates the stacking faults and deformation twins are all initiated from the region that corresponds to the maximum shear stress. The formation of the sub-grain boundary is through the intersection between primary and secondary stacking faults/deformation twins.

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Related Institution

State Key Laboratory of High-Performance Roll Materials and Composite Forming School of Materials Science and Engineering Hebei University of Technology

d Institute of Materials Intelligent Technology Liaoning Academy of Materials

c School of Materials Science and Engineering Taiyuan University of Science and Technology

a School of Materials Science and Engineering MOE jointly Collaborative Innovation Center for High-performance Al/Mg based Materials Shanxi Key Laboratory of Intelligent Casting and Advanced Forming for New Materials North University of China Taiyuan People’s Republic of China

b Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology Beijing Beijing People’s Republic of China

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