The atomic structure of a [100], 45° twist plus 17.5° tilt grain boundary in aluminium by high-resolution electron microscopy

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

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

A [100], 45° twist plus 17.5° tilt mixed character aperiodic grain boundary in aluminium has been studied by high-resolution electron microscopy. Most of the boundary is asymmetric and exhibits coherency and/or anticoherency dislocations due to lattice mismatch across the interface. The boundary structure was found to be constituted of two basic structural units and could not be characterized on the basis of coincident-site lattice, displacement shift complete and the O-lattice geometric models of grain boundaries. Steps and microfacets observed at the boundary have also been characterized within the framework of the same structural unit model.

Original languageEnglish (US)
Pages (from-to)719-733
Number of pages15
JournalPhilosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties
Volume64
Issue number3
DOIs
StatePublished - Sep 1991

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Science(all)
  • Condensed Matter Physics
  • Physics and Astronomy (miscellaneous)
  • Metals and Alloys

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