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Abstract:
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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APPLIED PHYSICS LETTERS
ISSN: 0003-6951
Year: 2011
Issue: 5
Volume: 98
4 . 0 0 0
JCR@2022
ESI Discipline: PHYSICS;
JCR Journal Grade:1
CAS Journal Grade:2
Cited Count:
WoS CC Cited Count: 48
SCOPUS Cited Count: 54
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 4
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