扫描手机二维码

欢迎您的访问
您是第 位访客

开通时间:..

最后更新时间:..

  • 郑勇刚 ( 教授 )

    的个人主页 http://faculty.dlut.edu.cn/zhengyg/zh_CN/index.htm

  •   教授   博士生导师   硕士生导师
论文成果 当前位置: 中文主页 >> 科学研究 >> 论文成果
Hetero interface and twin boundary mediated strengthening in nano-twinned Cu//Ag multilayered materials

点击次数:
论文类型:期刊论文
第一作者:Zheng, Yonggang
通讯作者:Zhang, HW (reprint author), Dalian Univ Technol, Fac Vehicle Engn & Mech, Int Res Ctr Computat Mech, Dept Engn Mech,State Key Lab Struct Anal Ind Equi, Dalian 116024, Peoples R China.
合写作者:Li, Qian,Zhang, Jiayong,Ye, Hongfei,Zhang, Hongwu,Shen, Luming
发表时间:2017-10-13
发表刊物:NANOTECHNOLOGY
收录刊物:Scopus、SCIE、EI、PubMed
卷号:28
期号:41
页面范围:415705
ISSN号:0957-4484
关键字:nanoscale multilayered metallic material; nanoscale twin; cube-on-cube hetero interface; hetero-twin interface; strength; molecular dynamics simulation
摘要:Based on molecular dynamics simulations, tensile mechanical properties and plastic deformation mechanisms of nano-twinned Cu//Ag multilayered materials are investigated in this work. Simulation results show that, due to the stronger strengthening effect of the twin boundary than both the cube-on-cube and hetero-twin interfaces between Cu and Ag layers, the strength increases with the increase of layer thickness for nano-twinned Cu//Ag multilayered materials with a constant twin spacing, while it decreases with the increase of layer thickness for twin-free ones. The strength of hetero-twin multilayered materials is higher than that of the cube-on-cube samples due to the different hetero interfacial configurations. The confined layer slip of dislocation is found to be the dominant plastic deformation mechanism for twin-free hetero-twin multilayered materials and the strength versus twin spacing in nano-twinned samples follows the conventional Hall-Petch relationship. These findings will shed light on the understanding of the plastic deformation mechanisms and the fabrication of high strength nano-twinned multilayered metallic materials.

 

辽ICP备05001357号 地址:中国·辽宁省大连市甘井子区凌工路2号 邮编:116024
版权所有:大连理工大学