节点文献

Plasticity and melting characteristics of metal Al with Ti-cluster under shock loading

  • 推荐 CAJ下载
  • PDF下载
  • 不支持迅雷等下载工具，请取消加速工具后下载。

【作者】 栾栋林； 王亚斌； 李果蒙； 袁磊； 陈军；

【Author】 Dong-Lin Luan;Ya-Bin Wang;Guo-Meng Li;Lei Yuan;Jun Chen;School of Mechatronic Engineering,Beijing Institute of Technology;System Engineering Research Institute;Beijing Special Vehicle Research Institute;Laboratory of Computational Physics,Institute of Applied Physics and Computational Mathematics;Center for Applied Physics and Technology,Peking University;

【通讯作者】 王亚斌;陈军;

【机构】 School of Mechatronic Engineering Beijing Institute of Technology； System Engineering Research Institute； Beijing Special Vehicle Research Institute； Laboratory of Computational Physics Institute of Applied Physics and Computational Mathematics； Center for Applied Physics and Technology Peking University；

【摘要】 Impurity agglomeration has a significant influence on shock response of metal materials. In this paper, the mechanism of Ti-clusters in metal Al under shock loading is investigated by non-equilibrium molecular dynamics simulations. Our results show that the Ti-cluster has obvious effects on the dislocation initiation and melting of bulk Al. First, the Ti clusters induces the strain concentrate and leads the dislocations to be initiated from the interface of Ti cluster. Second, dislocation distribution from the Ti-cluster model results in a formation of a grid-like structure, while the dislocation density is reduced compared with that from the perfect Al model. Third, the critical shock velocity of dislocation from the Ti-cluster model is lower than from perfect Al model. Furthermore, it is also found that the temperature near the interface of Ti-cluster is100 K–150 K higher than in the other areas, which means that Ti-cluster interface melts earlier than the bulk area.

【Abstract】 Impurity agglomeration has a significant influence on shock response of metal materials. In this paper, the mechanism of Ti-clusters in metal Al under shock loading is investigated by non-equilibrium molecular dynamics simulations. Our results show that the Ti-cluster has obvious effects on the dislocation initiation and melting of bulk Al. First, the Ti clusters induces the strain concentrate and leads the dislocations to be initiated from the interface of Ti cluster. Second, dislocation distribution from the Ti-cluster model results in a formation of a grid-like structure, while the dislocation density is reduced compared with that from the perfect Al model. Third, the critical shock velocity of dislocation from the Ti-cluster model is lower than from perfect Al model. Furthermore, it is also found that the temperature near the interface of Ti-cluster is100 K–150 K higher than in the other areas, which means that Ti-cluster interface melts earlier than the bulk area.

【关键词】 molecular dynamics； impurity cluster； dislocation； shock loading；
【Key words】 molecular dynamics； impurity cluster； dislocation； shock loading；
【基金】 Project supported by the National Natural Science Foundation of China (Grant No. 12072044)
  • 【文献出处】 Chinese Physics B ,中国物理B , 编辑部邮箱 ,2021年07期
  • 【分类号】TG146.21
  • 【下载频次】28
知网节下载
节点文献中： 

本文链接的文献网络图示:

本文的引文网络
二级参考文献(0)
参考文献(0)
共引文献(0)
节点文献
同被引文献(0)
引证文献(0)
二级引证文献(0)