Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 93, Issue 1, Pages 174-177Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2005.03.011
Keywords
metallic glasses; ductility; shear band; etch
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The deformation behavior of Zr41.2Ti13.8Cu12.5Ni10Be22.5 bulk metallic glass was studied by in situ scanning electron microscopy (SEM) quasi-static uniaxial compression tests at room temperature. Multiple shear bands were observed with a large plasticity. Microscopic examination demonstrates that slipping, branching and intersecting of multiple shear bands are the main mechanisms for enhancing the plasticity of this metallic glass. Additionally, nano/micro-scale voids and cracks at the intersecting sites of shear bands and preferential etching of shear bands were observed as well. These observations demonstrated that the formation of shear bands in bulk metallic glasses is resulted mainly from local free volume coalescence. (c) 2005 Elsevier B.V. All rights reserved.
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