期刊
CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE
卷 17, 期 6, 页码 284-297出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cossms.2013.11.002
关键词
Grain boundaries; Dislocations; Deformation; Fracture; Molecular dynamics
资金
- Department of Energy, Office of Basic Energy Sciences [DE-FG02-08ER46525]
- NSF IRD program
This paper reviews recent results in the simulation of the mechanical response of metallic microstructures at the atomic level. The role of the grain boundary network in deformation process is the concentration of this paper as studied by virtual tensile and nanoindentation tests. The grain boundary network is found to contribute to plastic deformation through the process of dislocation nucleation, absorption and transmission, as well as grain boundary accommodation mechanisms such as grain boundary sliding and migration. The microstructural grain boundary network is also critical to the nucleation and propagation of cracks. The challenges and opportunities in this area are discussed. (C) 2013 Published by Elsevier Ltd.
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