Microstructure- and surface orientation-dependent mechanical behaviors of Ag nanowires under bending
作者： S.B. Zhang
DOI: 10.1016/J.COMMATSCI.2014.07.016
关键词:
摘要: Abstract The bending mechanical behaviors of Ag nanowires with different microstructures and surface orientations are investigated via molecular dynamics simulations. Our results show the fivefold twin boundary strongly hinders dislocation motion, leading to pile-ups at boundaries which is from tensile tests in does not act as substantive barriers for propagation dislocations can easily pass through boundary. strengthens by strain hardening. In single crystalline nanowires, nucleation sites characteristics determined loading directions orientations. lead ductility when same nanowire loaded along directions. first order effect orientation on dominant deformation mode has been observed present work. stress gradient plays an important role under tension bending.
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