In situ atomic-scale observation of dislocation climb and grain boundary evolution in nanostructured metal

Shufen Chu; Pan Liu; Yin Zhang; Xiaodong Wang; Shuangxi Song; Ting Zhu; Ze Zhang; Xiaodong Han; Baode Sun; Mingwei Chen

doi:10.1038/s41467-022-31800-8

Nature Communications (Jul 2022)

In situ atomic-scale observation of dislocation climb and grain boundary evolution in nanostructured metal

Shufen Chu,
Pan Liu,
Yin Zhang,
Xiaodong Wang,
Shuangxi Song,
Ting Zhu,
Ze Zhang,
Xiaodong Han,
Baode Sun,
Mingwei Chen

Affiliations

Shufen Chu: Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University
Pan Liu: Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University
Yin Zhang: Woodruff School of Mechanical Engineering, Georgia Institute of Technology
Xiaodong Wang: Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University
Shuangxi Song: Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University
Ting Zhu: Woodruff School of Mechanical Engineering, Georgia Institute of Technology
Ze Zhang: Center of Electron Microscopy and State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University
Xiaodong Han: Institute of Microstructure and Properties of Advanced Materials, Beijing University of Technology
Baode Sun: Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University
Mingwei Chen: Department of Materials Science and Engineering, Johns Hopkins University

DOI: https://doi.org/10.1038/s41467-022-31800-8
Journal volume & issue: Vol. 13, no. 1
pp. 1 – 8

Abstract

Read online

Dislocation climb is crucial to plasticity and creep of materials. Here, the authors report real-time atomic-scale observations of grain boundary dislocation climb in nanostructured Au at room temperature. The dislocation climb occurs by reconstruction of two atomic columns in the dislocation core.

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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