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作者:

Wang, Lihua (Wang, Lihua.) (学者:王立华) | Zhang, Ze (Zhang, Ze.) | Ma, En (Ma, En.) | Han, X. D. (Han, X. D..) (学者:韩晓东)

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摘要:

A detailed in situ investigation of dislocation processes has been rare for nanograined materials with grain sized near or less than 10 nm. Here, we report a time-resolved and atomic-scale in situ transmission electron microscopy observation of the nucleation, motion, annihilation, and storage of full dislocations in nanograins with diameters less than similar to 10 nm. Annihilation of dislocation dipoles appears to be a major contributor to the reduction in dislocation density, in addition to annihilation at grain boundary sinks. The accumulation of a high density of dislocations inside nanograins is found to be possible when they are surrounded by neighboring grains. (c) 2011 American Institute of Physics. [doi: 10.1063/1.3549866]

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作者机构:

  • [ 1 ] [Wang, Lihua]Beijing Univ Technol, Inst Microstruct & Properties Adv Mat, Beijing 100124, Peoples R China
  • [ 2 ] [Zhang, Ze]Beijing Univ Technol, Inst Microstruct & Properties Adv Mat, Beijing 100124, Peoples R China
  • [ 3 ] [Han, X. D.]Beijing Univ Technol, Inst Microstruct & Properties Adv Mat, Beijing 100124, Peoples R China
  • [ 4 ] [Zhang, Ze]Zhejiang Univ, Dept Mat Sci, Hangzhou 310008, Zhejiang, Peoples R China
  • [ 5 ] [Ma, En]Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA

通讯作者信息:

  • 王立华

    [Wang, Lihua]Beijing Univ Technol, Inst Microstruct & Properties Adv Mat, Beijing 100124, Peoples R China

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来源 :

APPLIED PHYSICS LETTERS

ISSN: 0003-6951

年份: 2011

期: 5

卷: 98

4 . 0 0 0

JCR@2022

ESI学科: PHYSICS;

ESI高被引阀值:182

JCR分区:1

中科院分区:2

被引次数:

WoS核心集被引频次: 43

SCOPUS被引频次: 48

ESI高被引论文在榜: 0 展开所有

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