Effect of the electronic state, stoichiometry and ordering energy on the ductility of transition metal-based intermetallics

A. A. Ogwu, T. J. Davies

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The planar defects associated with deformation in ordered intermetallic compounds namely, the antiphase boundary, superlattice intrinsic stacking fault, and complex stacking fault are non-equilibrium structures corresponding to a state of disorder within the ordered structure of the lattice and therefore affect both the electronic energy states and the Brillouin zone structure. It is possible that a relationship exists between the antiphase boundary energy, γAPB, and the sum of the number of unfilled outermost d-state electrons in the transition metals on which this class of intermetallics is based. If this hypothesis is taken in conjunction with a set of rules for improving ductility in intermetallics proposed previously, a coherent explanation of recently observed ductilities in transition metal-based intermetallics would seem to be feasible.

Original languageEnglish
Pages (from-to)847-852
Number of pages6
JournalJournal of Materials Science
Volume28
Issue number3
DOIs
Publication statusPublished - Feb 1993
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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