物理学报Issue(19)：388-394,7.DOI:10.7498/aps.62.196201
纳米铜薄膜塑性变形中空位型缺陷形核与演化的分子动力学研究
Generation and evolution of vacancy-type defects in nano-Cu films during plastic deformation by means molecular dynamics
摘要
Abstract
Molecular dynamics simulations were performed to study the plastic deformation of Cu films under uniaxial tension. The genera-tion and evolution mechanisms of vacancy-type defects were carefully studied. In the simulations, embedded atom method (EAM) was selected as the interatomic potential function. Simulation results indicate that the plastic deformation is due to the dislocation nucle-ation near free surfaces. Both the generation and evolution of vacancy-type defects are related to dislocation activities. Vacancy-type defects prefer to nucleate at the position of dislocation jogs and the intersection of stacking faults initially, and finally exist in the form of single vacancy, vacancy clusters and stacking-fault tetrahedrons.关键词
纳米薄膜/塑性变形/空位/层错四面体Key words
nano-Cu film/plastic deformation/vacancy/stacking-fault tetrahedron引用本文复制引用
徐爽,郭雅芳..纳米铜薄膜塑性变形中空位型缺陷形核与演化的分子动力学研究[J].物理学报,2013,(19):388-394,7.基金项目
国家自然科学基金(批准号:11072026)资助的课题 （批准号:11072026）
