物理学报Issue(4)：046201-1-046201-7,7.DOI:10.7498/aps.63.046201
界面旋转角对双晶镁力学性质影响的分子动力学模拟
Molecular dynamics simulation of effect of tilt angle on mechanical prop erty of magnesium bicrystals
摘要
Abstract
The effects of grain boundary on the deformation behavior of magnesium bicrystals under tensile loading are investigated using molecular dynamics simulation method. Deformation mechanisms of both asymmetric and symmetric magnesium bicrystals are studied. The results show that the twist angle could exert a significant influence on the flow stress in the plastic stage. It is found that the plastic property of symmetric magnesium bicrystal is much better than that of asymmetric counterpart. In addition, for bicrystalline metal with large twist angle, its plastic response is better than that with small angle, owing to the dislocation nucleation activity in the grain boundary region.关键词
分子动力学模拟/力学性能/晶界Key words
molecular dynamics simulation/mechanical properties/grain boundary引用本文复制引用
王琛,宋海洋,安敏荣..界面旋转角对双晶镁力学性质影响的分子动力学模拟[J].物理学报,2014,(4):046201-1-046201-7,7.基金项目
国家自然科学基金(批准号:10902083)、教育部新世纪优秀人才支持计划(批准号：NCET-12-1046)和陕西省青年科技新星支持计划(批准号:2012KJXX-39)资助的课题.* Project supported by the National Natural Science Foundation of China (Grant No.10902083), the Program for New Century Excellent Talents in University, China (Grant No. NCET-12-1046), and the New Scientific and Technological Star of Shaanxi Province, China (Grant No.2012KJXX-39) （批准号:10902083）
