Effects of tilt interface boundary on mechanical properties of Cu/Ni nanoscale metallic multilayer composites  

作　　者：杨萌 徐建刚 宋海洋 张云光 

机构地区：[1]School of Science,Xi'an University of Posts and Telecommunications [2]College of Materials Science and Engineering,Xi'an Shiyou University

出　　处：《Chinese Physics B》2015年第9期376-380,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.10902083);the Program for New Century Excellent Talent in University of Ministry of Education of China(Grant No.NCET-12-1046);the Program for New Scientific and Technological Star of Shaanxi Province,China(Grant No.2012KJXX-39);the Natural Science Basic Research Plan in Shaanxi Province,China(Grant No.2014JQ1036)

摘　　要：The effect of tilt interfaces and layer thickness of Cu/Ni multilayer nanowires on the deformation mechanism are investigated by molecular dynamics simulations. The results indicate that the plasticity of the sample with a 45° tilt angle is much better than the others. The yield stress is found to decrease with increasing the tilt angle and it reaches its lowest value at 33°. Then as the tilt angle continues to increase, the yield strength increases. Furthermore, the studies show that with the decrease of layer thickness, the yield strength gradually decreases. The study also reveals that these different deformation behaviors are associated with the glide of dislocation.The effect of tilt interfaces and layer thickness of Cu/Ni multilayer nanowires on the deformation mechanism are investigated by molecular dynamics simulations. The results indicate that the plasticity of the sample with a 45° tilt angle is much better than the others. The yield stress is found to decrease with increasing the tilt angle and it reaches its lowest value at 33°. Then as the tilt angle continues to increase, the yield strength increases. Furthermore, the studies show that with the decrease of layer thickness, the yield strength gradually decreases. The study also reveals that these different deformation behaviors are associated with the glide of dislocation.

关 键 词：multilayer composite molecular dynamics simulation mechanical property 

分 类 号：TB383.1[一般工业技术—材料科学与工程]