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

M. Shamsuzzoha, David Smith, P. A. Deymier

    Research output: Contribution to journalArticlepeer-review

    11 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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