Direct dynamic atomic mechanisms of strain-induced grain rotation in nanocrystalline, textured, columnar-structured thin gold films

P. Liu, S. C. Mao, L. H. Wang, X. D. Han, Z. Zhang

    Research output: Contribution to journalArticlepeer-review

    120 Citations (Scopus)

    Abstract

    A thin film tensile technique with in situ atomic-scale observations was developed to directly characterize the atomic-scale plastic deformation mechanisms and fracture process of nanocrystalline gold thin films. The grain rotation accompanying the tensile fracture processes was studied at the atomic scale. Grain boundary disclination nucleation for accommodating inter-grain rotation plasticity was directly dynamically observed in situ. These results appear to support the concept of nucleation, growth and mobilization of disclinations for nanocrystalline plasticity by grain rotations.

    Original languageEnglish
    Pages (from-to)343-346
    Number of pages4
    JournalScripta Materialia
    Volume64
    Issue number4
    DOIs
    Publication statusPublished - 2011 Feb

    Keywords

    • Grain rotation
    • In situ atomic scale
    • Nanocrystalline
    • Thin films

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering
    • Metals and Alloys

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