Plastic deformation behaviors of amorphous-Cu50Zr50/crystalline-Cu nanolaminated structures by molecular dynamics simulations
Plastic deformation behaviors of amorphous-Cu50Zr50/crystalline-Cu nanolaminated structures by molecular dynamics simulations
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通过分子动力学模拟非晶-Cu50Zr50/结晶-Cu纳米层压结构的塑性变形行为
DOI：
10.1016/j.jallcom.2016.09.184
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发表时间：
2017-02
影响因子：
6.2
通讯作者：
Fei Wang
中科院分区：
文献类型：
--
作者：
Yan Cui;Yoji Shibutani;Shuo Li;Ping Huang;Fei Wang
As promising composites in engineering applications, amorphous/crystalline nanolaminates have attracted great research interests by its excellent mechanical behaviors recently. In this study, plastic deformations of amorphous Cu50Zr50and amorphous-Cu50Zr50/crystalline-Cu/amorphous-Cu50Zr50nanolaminated structures with different crystalline layer thickness under pure shear loading were studied using molecular dynamic simulations. A transition in the plastic deformation mode takes place in the nanolaminated structure from the pure shear banding deformation in the amorphous CuZr to the interactive deformation between interfacial dislocation in the crystalline layer and shear transformation zones (STZs) in the amorphous layer. It is found that the partial dislocation sliding, which is activated by local strain concentration in the amorphous at amorphous/crystalline interface, alleviates and releases the large atomic shear strain concentration in the amorphous. As a result, interfacial dislocation-STZs interaction process prevents the evolution of shear localization at the layer interface and facilitates a more homogeneously plastic deformation in the nanolaminated structure. Besides, the dislocation intersection within a large crystalline layer can cause strain hardening, which provides potentials for the combination between high strength and good plastic deformability at the engineering applications.
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影响因子：
4.4
作者：
M. Wakeda;Y. Shibutani;S. Ogata;Junyoung Park
通讯作者：
M. Wakeda;Y. Shibutani;S. Ogata;Junyoung Park
影响因子：
3.2
作者：
Liyun Zhao;Yun-liang Li;R. Xue;Wen-Qiong Wang;H. Bai
通讯作者：
Liyun Zhao;Yun-liang Li;R. Xue;Wen-Qiong Wang;H. Bai
影响因子：
3.2
作者：
H. Arora;A. Aditya;S. Mukherjee
通讯作者：
H. Arora;A. Aditya;S. Mukherjee
影响因子：
3.2
作者：
Adibi, Sara;Branicio, Paulo S.;Joshi, Shailendra P.
通讯作者：
Joshi, Shailendra P.
DOI：
10.1088/0965-0393/20/8/085007
发表时间：
2012-12-01
影响因子：
1.8
作者：
Stukowski, Alexander;Bulatov, Vasily V.;Arsenlis, Athanasios
通讯作者：
Arsenlis, Athanasios