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Grain Rotation in Plastic Deformation

1
Center for High Pressure Science and Technology Advanced Research, Pudong, Shanghai 201203, China
2
Department of Engineering Mechanics and Center for X-Mechanics, Zhejiang University, Hangzhou 310027, China
3
International Joint Laboratory for Light Alloys, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
4
Department of Chemistry & Biochemistry, University of California, Los Angeles, CA 90095, USA
*
Author to whom correspondence should be addressed.
Quantum Beam Sci. 2019, 3(3), 17; https://doi.org/10.3390/qubs3030017
Received: 16 January 2019 / Revised: 3 June 2019 / Accepted: 23 July 2019 / Published: 26 July 2019
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Abstract

The plastic deformation behaviors of crystalline materials are usually determined by lattice dislocations. Below a certain particle or grain size, focus is placed on the grain-boundary-mediated mechanisms (e.g., grain rotation, grain boundary sliding, and diffusion), which has been observed during recrystallization, grain growth, and plastic deformation. However, the underlying mechanisms of grain rotation remain to be studied. In this article, we review the theoretical models, molecular dynamics simulations, and experimental investigations on grain rotation. The development of in situ transmission electron microscopy (TEM) and X-ray characterization methods for probing grain boundary processes during plastic deformation provides a better understanding of the mechanisms of grain rotation. Especially, the ability to acquire high-quality X-ray diffraction patterns from individual nanograins is expected to find broad applications in various fields such as physics, chemistry, materials science, and nanoscience. View Full-Text
Keywords: grain rotation; nanomaterials; plastic deformation grain rotation; nanomaterials; plastic deformation
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Chen, B.; Zhu, L.; Xin, Y.; Lei, J. Grain Rotation in Plastic Deformation. Quantum Beam Sci. 2019, 3, 17.

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