Dislocation climb models from atomistic scheme to dislocation dynamics

Preprint English OPEN
Niu, Xiaohua; Luo, Tao; Lu, Jianfeng; Xiang, Yang;

We develop a mesoscopic dislocation dynamics model for vacancy-assisted dislocation climb by upscalings from a stochastic model on the atomistic scale. Our models incorporate microscopic mechanisms of (i) bulk diffusion of vacancies, (ii) vacancy exchange dynamics betwe... View more
  • References (10)

    A. Arsenlis, W. Cai, M. Tang, M. Rhee, T. Oppelstrup, G. Hommes, T. G. Pierce, and V. V. Bulatov. Enabling strain hardening simulations with dislocation dynamics. Modelling Simul. Mater. Sci. Eng., 15: 553-595, 2007.

    C. Ayas, J.A.W. van Dommelen, and V.S. Deshpande. Climb-enabled discrete dislocation plasticity. J. Mech. Phys. Solids, 62:113-136, 2014.

    B. Bako, E. Clouet, L. M. Dupuy, and M. Bletry. Dislocation dynamics simulations with climb: kinetics of dislocation loop coarsening controlled by bulk diffusion. Phil. Mag., 91:3173-3191, 2011.

    R.W. Balluffi, S.M. Allen, and W.C. Carter. Kinetics of Materials. John Wiley & Sons, Inc., 2005.

    K. Danas and V.S. Deshpande. Plane-strain discrete dislocation plasticity with climb-assisted glide motion of dislocations. Modelling Simul. Mater. Sci. Eng., 21:045008, 2013.

    Y. Gao, Z. Zhuang, Liu Z.L., X.C. You, and Z.H. Zhao X.C.and Zhang. Investigations of pipe-diffusion-based dislocation climb by discrete dislocation dynamics. Int. J. Plasticity, 27:1055-1071, 2011.

    P.-A. Geslin, B. Appolaire, and A. Finel. Multiscale theory of dislocation climb. Phys. Rev. Lett., 115: 265501, 2015.

    N.M. Ghoniem, S.-H. S.-H. Tong, and L.Z. Sun. Parametric dislocation dynamics: a thermodynamics-based approach to investigations of mesoscopic plastic deformation. Phys. Rev. B, 61:913-927, 2000.

    Y.J. Gu, Y. Xiang, S.S Quek, and D.J. Srolovitz. Three-dimensional formulation of dislocation climb. J. Mech. Phys. Solids, 83:319-337, 2015.

    Y.J. Gu, Y. Xiang, and D.J. Srolovitz. Relaxation of low-angle grain boundary structure by climb of the constituent dislocations. Scripta Mater., 114:35-40, 2016. 33

  • Related Organizations (5)
  • Metrics
Share - Bookmark