Structural refinement and deformation mechanisms in nanostructured metals

K. Lu, Niels Hansen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Deformation mechanisms in metals deformed to ultrahigh strains are analyzed based on a general pattern of grain subdivision down to structural scales 10 nm. The materials analyzed are medium- to high-stacking fault energy face-centered cubic and body-centered cubic metals with different loading conditions. The analysis points to dislocation glide as the dominant deformation mechanism at different length scales supplemented by a limited amount of twinning at the finest scales. With decreasing deformation temperature and increasing strain rate, the contribution of twinning increases
    Original languageEnglish
    JournalScripta Materialia
    Volume60
    Issue number12
    Pages (from-to)1033-1038
    ISSN1359-6462
    DOIs
    Publication statusPublished - 2009

    Keywords

    • Materials research
    • Light strong materials for wind turbines and for transportation

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