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Realization of high tensile ductility in a bulk metallic glass composite by the utilization of deformation-induced martensitic transformation

Title
Realization of high tensile ductility in a bulk metallic glass composite by the utilization of deformation-induced martensitic transformation
Authors
Kim, CPOh, YSLee, SKim, NJ
POSTECH Authors
Lee, SKim, NJ
Date Issued
Aug-2011
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Abstract
A new class of bulk metallic glass composite is introduced that possesses a large tensile ductility along with significant work hardening capacity under tensile stress mode. It shows that the deformation of the composite is initiated in the harder amorphous matrix, followed by the plastic deformation of softer crystalline dendrites at a later deformation stage. This unique property is attributed to the deformation-induced transformation of crystalline dendrites to martensite phase. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Keywords
Bulk metallic glass; Composite; Microstructure; Ductility; Martensitic transformation; STACKING-FAULT ENERGY; MECHANICAL-PROPERTIES; MATRIX COMPOSITES; AMORPHOUS-ALLOYS; BEHAVIOR; ZR; MICROSTRUCTURE; PLASTICITY; TITANIUM; PROPERTY
URI
http://oasis.postech.ac.kr/handle/2014.oak/17201
DOI
10.1016/J.SCRIPTAMAT.2011.04.037
ISSN
1359-6462
Article Type
Article
Citation
SCRIPTA MATERIALIA, vol. 65, no. 4, page. 304 - 307, 2011-08
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 LEE, SUNG HAK
Dept of Materials Science & Enginrg
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