Plasticity enhancement of Zr-based bulk metallic glasses by direct current electropulsing
Resource
Journal of Alloys and Compounds, 525, 68-72
Journal
Journal of Alloys and Compounds
Pages
68-72
Date Issued
2012
Date
2012
Author(s)
Abstract
Direct current electropulsing was used to improve the plasticity of (Zr 53Cu 30Ni 9Al 8) 99.5Si 0.5 bulk metallic glasses. After the electropulsing treatment, the specimen showed reductions in both the glass transition and the crystallization temperatures while retaining its amorphous structure, and both Young's modulus and the hardness decreased while the nanoindentation loading curve became more serrated. Using the bond-interface method and Vickers indentation, the treated specimen showed more branching of semi-circular shear bands and less radial shear bands compared to its as-cast counterpart. The possible plasticity enhancement mechanism of the electropulsing treatment was also discussed. © 2011 Elsevier Ltd. All rights reserved. All rights reserved.
Type
journal article
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