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Stick-slip dynamics and recent insights into shear banding in metallic glasses

Klaumünzer, David ; Maaß, Robert ; Löffler, Jörg F.

In: Journal of Materials Research, 2011, vol. 26, no. 12, p. 1453-1463

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    Title
    • Stick-slip dynamics and recent insights into shear banding in metallic glasses
    Author
    • Klaumünzer, David. Laboratory of Metal Physics and Technology, Department of Materials, 8093 Zurich, Switzerland
    • Maaß, Robert. Laboratory of Metal Physics and Technology, Department of Materials, 8093 Zurich, Switzerland
    • Löffler, Jörg F.. Laboratory of Metal Physics and Technology, Department of Materials, 8093 Zurich, Switzerland
    Document Type
    • Postprint
    Language
    • English
    Published in
    • Journal of Materials Research, 2011, vol. 26, no. 12, p. 1453-1463. Cambridge University Press
    Other Version
    OAI-PMH Identifier
    • oai:doc.rero.ch:300847
    Summary
    Despite extensive research, the understanding of the fundamental processes governing yielding and plastic flow in metallic glasses remains poor. This is due to experimental difficulties in capturing plastic flow as a result of a strong localization in space and time by the formation of shear bands at low homologous temperatures. Unveiling the mechanism of shear banding is hence key to developing a deeper understanding of plastic deformation in metallic glasses. We will compile recent progress in studying the dynamics of shear-band propagation from serrated flow curves. We will also take a perspective gleaned from stick-slip theory and show how the insights gained can be deployed to explain fundamental questions concerning the origin, mechanism, and characteristics of flow localization in metallic glasses