High-resolution electron microscopy of dislocations in a B2-type intermetallic compound CoTi

D. Shindo, M. Yoshida, B. T. Lee, T. Takasugi, K. Hiraga

    Research output: Contribution to journalArticlepeer-review

    18 Citations (Scopus)

    Abstract

    Core structures of edge and screw dislocations in CoTi were studied by high-resolution electron microscopy (HREM). An HREM image of an edge dislocation showed that the spreading of the dislocation core was limited within a distance of about 1.2 nm. From an HREM image of screw dislocations in CoTi, it was shown that the core was spreading on the (010) plane and the spreading of the core was limited within a distance of about 1.8 nm. It was suggested that the core spreading on the {010} plane, which was different from the slip plane of {110}, affected the abnormal temperature dependence of yield stress of CoTi.

    Original languageEnglish
    Pages (from-to)167-171
    Number of pages5
    JournalIntermetallics
    Volume3
    Issue number2
    DOIs
    Publication statusPublished - 1995

    Keywords

    • B2-type structure
    • CoTi
    • core spreading
    • high-resolution electron microscopy
    • yield stress

    ASJC Scopus subject areas

    • Chemistry(all)
    • Mechanics of Materials
    • Mechanical Engineering
    • Metals and Alloys
    • Materials Chemistry

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