Shear band melting and serrated flow in metallic glasses

K. Georgarakis, M. Aljerf, Y. Li, A. Lemoulec, F. Charlot, A. R. Yavari, K. Chornokhvostenko, E. Tabachnikova, G. A. Evangelakis, D. B. Miracle, A. L. Greer, T. Zhang

    研究成果: Article査読

    100 被引用数 (Scopus)

    抄録

    Scanning electron microscopy observations of shear steps on Zr-based bulk metallic glasses show direct evidence of shear band melting due to heat generated by elastic energy release. The estimated range of attained temperatures and the observed morphologies are consistent with shear steps forming at a subsonic speed limited by a required redistribution of local microscopic stresses. The calculations indicate that a 0.2 μm layer melts in the vicinity of a shear band forming a 1 μm shear step. The plastic part of the stress strain curve is serrated but a majority of shear events are not associated to serrations.

    本文言語English
    論文番号031907
    ジャーナルApplied Physics Letters
    93
    3
    DOI
    出版ステータスPublished - 2008 8 4

    ASJC Scopus subject areas

    • 物理学および天文学(その他)

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