Molecular dynamics study on the nano-void growth in face-centered cubic single crystal copper
作者: K.J. ZhaoC.Q. ChenY.P. ShenT.J. Lu
作者单位: 1MOE Key Laboratory for Strength and Vibration, School of Aerospace, Xi’an Jiaotong University, Xi’an 710049, PR China
2AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, PR China
刊名: Computational Materials Science, 2009, Vol.46 (3), pp.749-754
来源数据库: Elsevier Journal
DOI: 10.1016/j.commatsci.2009.04.034
关键词: Molecular dynamicsNano-void growthSingle crystal copperSize effectIncipient yielding
英文摘要: Abstract(#br)Cylindrical nano-void growth in face-centered cubic single crystal copper is studied by mean of molecular dynamics with the Embedded Atom Method. The problem is modeled by a periodic unit cell containing a centered nano-sized cylindrical hole subject to uniaxial tension. The effects of the cell size, crystalline orientation, and initial void volume fraction on the macroscopic stress–strain curve, incipient yield strength, and macroscopic effective Young’s modulus are quantified. Defect evolution in terms of dislocation emission immediately after incipient yielding is also investigated. Obtained results show that, for a given void volume fraction, cell size has apparent effects on the incipient yield strength but negligible effects on the macroscopic effective Young’s modulus....
全文获取路径: Elsevier  (合作)
影响因子:1.878 (2012)

  • crystal 晶体
  • growth 生长
  • cubic 三次方程
  • single 单独的
  • study 学习
  • dynamics 动力学
  • centered 中心馈电的
  • copper 
  • effect 效应
  • yielding 收获量