Journal
SCRIPTA MATERIALIA
Volume 62, Issue 7, Pages 477-480Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2009.12.015
Keywords
Free volume; Yielding; Metallic glass
Categories
Funding
- NSF of China [50731008, 50621061, 50890171]
- US Department of Energy, Office of Basic Energy Sciences
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Based on the free volume model, a critical value of reduced free volume is proposed to be the sufficient condition for the onset of yielding in metallic glasses. The corresponding stress for the onset of yielding is found to be less than the macroscopically measured yield strength, which is consistent with experimental observations. The difference in deformability between brittle and plastic metallic glasses can be explained in terms of the free volume evolution in the localized shear zone. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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