Molecular dynamics simulation on torsion deformation of copper aluminum core–shell nanowires

被引：0
作者：
Zailin Yang
Minghe Li
Ying Li
Yong Yang
Jianwei Zhao
机构：
[1] College of Aerospace and Civil Engineering,Key Laboratory of Advanced Material of Ship and Mechanics, Ministry of Industry and Information Technology
[2] Harbin Engineering University,College of Materials and Textile Engineering
[3] Harbin Engineering University,undefined
[4] Jiaxing University,undefined
来源：
Journal of Nanoparticle Research | 2021年 / 23卷
关键词：
Core–shell nanowire; Copper aluminum alloy; Torsion deformation; Molecular dynamics; Modeling and simulation;
D O I：
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中图分类号：
学科分类号：
摘要：
Nanowires are one-dimensional structures with a cross-sectional size of less than 100 nm, which are one of the classic nanomaterials; especially core–shell nanowires have excellent properties. The torsion of copper aluminum core–shell nanowires is simulated by molecular dynamics method. We found that the stability of copper aluminum core–shell nanowires with the lattice mismatch between core and shell is mainly due to the dislocation ring structure at the interface. Furthermore, the effects of torsion rate and temperature on the torsional response are discussed. The results show that the torsion rate does not change the elasticity of the nanowires, but a slight strengthening phenomenon appears at the higher torsion rate. The increase of temperature will greatly weaken the elastic deformation resistance of the nanowires.
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