A study of grain boundary translational states in a Σ3[110]/(111) bicrystal

P. A. Deymier, M. Shamsuzzoha, J. D. Weinberg

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3 Scopus citations

Abstract

High-resolution electron microscopy images of a Σ3[110]/(111) bicrystal produced by heavy cold rolling and annealing show a multiplicity of grain boundary core structures. Two grain boundary states are separated by a partial grain boundary dislocation with Burgers vector b = 1 2 b1 (where b1 = 1 6[112] is the Burgers vector of a secondary dislocation). This implies a change in translational state. All other structures are related through continuous transport of atoms from one grain to the other resulting in [111] grain boundary steps. Calculations of the energy associated with the observed structures indicate that the two perfect twin states t = 0 and 2b1 are stable, while all other grain boundary translational states are metastable.

Original languageEnglish (US)
Pages (from-to)1571-1577
Number of pages7
JournalActa Metallurgica Et Materialia
Volume39
Issue number7
DOIs
StatePublished - Jul 1991

ASJC Scopus subject areas

  • Engineering(all)

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