• Scripta Materialia - Article in Press, Uncorrected Proof - [Scripta Materialia]

    2008-12-26

    Micropillar compression studies on a bulk metallic glass in different structural states

    A. Dubacha, b, R. Raghavanb, c, J.F. Löfflera, J. Michlerb and U. Ramamurtyc

    aLaboratory of Metal Physics and Technology, Department of Materials, ETH Zurich, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
    bEMPA Materials Science and Technology, Feuerwerkerstrasse 39, 3602 Thun, Switzerland
    cDepartment of Materials Engineering, Indian Institute of Science, Bangalore 560 012, India

    Received 10 November 2008; revised 3 December 2008; accepted 4 December 2008. Available online 24 December 2008.

    Uniaxial compression experiments on 0.3, 1 and 3 μm diameter micropillars of a Zr-based bulk metallic glass in as-cast, shot-peened and structurally relaxed conditions were conducted. Shear band formation and stable propagation is observed to be the plastic deformation mode in all cases, with no detectable difference in yield strength according to either size or condition. The limitations of uniaxial compression tests in assessing the influence of various material conditions on plasticity, when it is inhomogeneous in nature, are illustrated.
    Keywords: Compression test; Metallic glasses; Plastic deformation; Shear bands; Free volume
    Tag：Ramamurty_U Löffler_JF
    Steven 发表于11:36:44 | 阅读全文 | 评论 0 | 编辑 | 分享 0
共1页 1