Cross-slip and annihilation of screw dislocations in Cu: A molecular dynamics study

Dan Mordehai, I. Kelson, Guy Makov

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Cross-slip of screw dislocations and the annihilation of screw dislocation dipoles in Cu were simulated using constant-temperature constant-stress molecular dynamics. The cross-slip mechanism and annihilation process of flexible dislocations in a large dipole configuration was identified as a dynamic variant of the Friedel-Escaig mechanism. The cross-slip rate was found to exhibit exponential dependence on the temperature, from which the activation enthalpy for the cross-slip process was calculated by the Arrhenius relation.

Original languageEnglish
Pages (from-to)37-39
Number of pages3
JournalMaterials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume400-401
Issue number1-2 SUPPL.
DOIs
StatePublished - 25 Jul 2005

Keywords

  • Cross-slip
  • Dislocations
  • Molecular dynamics

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