Journal
SCRIPTA MATERIALIA
Volume 57, Issue 2, Pages 173-176Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2007.02.013
Keywords
metallic glasses; shear bands; plastic deformation; transmission sample preparation
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A small variation in the composition of (Zr50Cu50)(100-x)Al-x bulk metallic glasses (BMGs) results in a markedly different mechanical behavior. In contrary to the previous reports, no chemical or structural inhomogeneities were observed in the sample that exhibits a large plastic strain, indicating that the plasticity of Zr-Cu-Al BMGs is not inherently related to their microstructural features. The shear bands in plastic Zr47.5Cu47.5Al5 show localized nanocrystallization whereas the macroscopically brittle Zr45Cu45Al10 shows no indications of nanocrystallization during deformation. (C) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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