期刊
ACTA MATERIALIA
卷 57, 期 5, 页码 1437-1441出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2008.11.032
关键词
MD-simulations; Metallic glasses; Deformation inhomogeneities; Low-temperature deformation
资金
- Gesellschaft fur wissenschaftliche Datenverarbeitung Gottingen
- German DFG-PAK 36
Dynamic heterogeneities in metallic glasses are investigated for the model glass Cu50Ti50 with the help of classical molecular dynamics computer simulations. By rapid quenching from melt at various Cooling rates (spanning five orders of Magnitude). differently relaxed amorphous cells are prepared. During subsequent shearing at T = 10 K, we observe a series of highly localized shear events. termed shear transformation zones (STZs). Detailed analysis focuses on the dynamics of STZ formation and the correlation with local properties. We identify a local mechanical stress bias its the physical origin of STZ formation during low-temperature shear deformation. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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