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

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 d...

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Bibliographic Details
Published in:Chinese physics B 2015-09, Vol.24 (9), p.376-380
Main Author: 杨萌 徐建刚 宋海洋 张云光
Format: Article
Language:English
Subjects:
BOUNDARIES
Camber
COMPOSITES
COMPUTER SIMULATION
Copper
Dislocations
INTERFACES
INTERLAYERS
MECHANICAL PROPERTIES
Multilayers
Nickel
Thickness
Tilt
YIELD STRENGTH
倾斜角度
分子动力学模拟
多层复合
材料力学性能
界面
纳米金属
边界
铜/镍
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Summary: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.
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/24/9/096202