The interaction between extended dislocations and antiphase domain boundaries - I: Superpartial separation and the yield stress

Tiesheng Rong, Mark Aindow, Ian Jones

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The interaction between an extended superdislocation in an ordered structure and an antiphase domain boundary (APB) has been analysed. In contrast to previous treatments (Cottrell AH. Relation of properties to microstructure. ASM Monograph 1954. p. 131; Ardley GW. Acta Metall 1955;3:525) we include the effects of (i) the small strip of perfect crystal within an extended dislocation straddling an APDB and (ii) the ledge in an APDB which has been cut by a dislocation. We also revisit the concept of APDB thickness'. The new analysis leads to a more marked variation of superpartial separation with domain size than previously calculated and also predicts a variation of yield stress with domain size which is in better agreement with experiment than are previous calculations. (C) 2001 Elsevier Science Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)499
Number of pages1
JournalIntermetallics
Volume9
Issue number6
DOIs
Publication statusPublished - 1 Jun 2001

Keywords

  • yield stress
  • mechanical properties, theory

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