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

Published online by Cambridge University Press:  27 June 2011

David Klaumünzer*
Affiliation:
Laboratory of Metal Physics and Technology, Department of Materials, 8093 Zurich, Switzerland
Robert Maaß
Affiliation:
Laboratory of Metal Physics and Technology, Department of Materials, 8093 Zurich, Switzerland
Jörg F. Löffler
Affiliation:
Laboratory of Metal Physics and Technology, Department of Materials, 8093 Zurich, Switzerland
*
a)Address all correspondence to this author. [email protected]
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Abstract

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.

Type
Invited Feature Paper
Copyright
Copyright © Materials Research Society 2011

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