The effect of twist angle on anisotropic mobility of {1 1 0} hexagonal dislocation networks in α-iron

J. B. Yang, Y. N. Osetsky, R. E. Stoller, Y. Nagai, M. Hasegawa

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

The anisotropic mobility of hexagonal dislocation networks (HDNs) in a series of (1 1̄ 0) twist boundaries under applied shear stress has been studied at the atomic scale in α-iron. A strong angular effect on the HDN mobility is found to be correlated with the dislocation core structure. The vector form of the Orowan equation and differential displacement maps of dislocation cores are used to account for the HDN behavior under loading.

Original languageEnglish
Pages (from-to)761-764
Number of pages4
JournalScripta Materialia
Volume66
Issue number10
DOIs
Publication statusPublished - 2012 May

Keywords

  • Atomic simulation
  • Dislocations
  • Grain boundary defects
  • Plastic deformation
  • Yield phenomena

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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