摘要
Inspired by the controversy over tensile deformation modes of single-crystalline 〈110〉/{111} Au nanowires, we investigated the dependency of the deformation mode on diameters of nanowires using the molecular dynamics technique. A new criterion for assessing the preferred deformation mode-slip or twin propagation--of nanowires as a function of nanowire diameter is presented. The results demonstrate the size-dependent transition, from superplastic deformation mediated by twin propagation to the rupture by localized slips in deformed region as the nanowire diameter decreases. Moreover, the criterion was successfully applied to explain the superplastic deformation of Cu nanowires.
在单人赛水晶的 110/ 的张力的变丑模式上由争吵启发了 { 111 } Au nanowires，我们用分子的动力学技术在 nanowires 的直径上调查了变丑模式的相关性。为估计比较喜欢的变丑 modeslip 或 nanowire 直径的功能被介绍的成双的 propagationof nanowires 的一个新标准。结果表明尺寸依赖者转变，从 superplastic 变丑由成双的繁殖调停了到破裂由局部性当 nanowire 直径减少，在使变形的区域滑倒。而且，标准成功地被使用解释 Cu nanowires 的 superplastic 变丑。
