Power-law creep from discrete dislocation dynamics. Academic Article uri icon

abstract

  • We report two-dimensional discrete dislocation dynamics simulations of combined dislocation glide and climb leading to "power-law" creep in a model aluminum crystal. The approach fully accounts for matter transport due to vacancy diffusion and its coupling with dislocation motion. The existence of quasiequilibrium or jammed states under the applied creep stresses enables observations of diffusion and climb over time scales relevant to power-law creep. The predictions for the creep rates and stress exponents fall within experimental ranges, indicating that the underlying physics is well captured.

published proceedings

  • Phys Rev Lett

altmetric score

  • 0.25

author list (cited authors)

  • Keralavarma, S. M., Cagin, T., Arsenlis, A., & Benzerga, A. A.

citation count

  • 86

complete list of authors

  • Keralavarma, Shyam M||Cagin, T||Arsenlis, A||Benzerga, A Amine

publication date

  • December 2012