期刊
INTERNATIONAL JOURNAL OF PLASTICITY
卷 65, 期 -, 页码 206-225出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijplas.2014.08.013
关键词
Crystal plasticity; Nanolamellar composites; Interface stability; Slip transfer; Accumulative roll bonding
资金
- Center for Materials at Irradiation and Mechanical Extremes, an Energy Frontier Research Center - US Department of Energy, Office of Science, Office of Basic Energy Sciences [2008LANL1026]
- Los Alamos National Laboratory Directed Research and Development (LDRD) [ER20140348]
- DOE [DE AC52 06NA25396]
This work presents a crystal plasticity modeling framework that accounts for the influence of material interfaces on the plastic behavior of the two crystals on either side of the interface. Within an interface-affected zone (IAZ) extending from both sides of the interface, slip system activity is presumed to be biased towards systems that permit slip transfer across the interface. The preferred slip transfer pathways are determined from the geometric alignment of the slip systems and the stress state within each crystal. The IAZ model is applied to study the plastic stability of Cu-Nb biaystals under plane strain compression. Our results show that the additional constraints imposed through the enforcement of slip continuity across the interface leads to reduced plastic stability as compared to the case without an IAZ for several of the interfaces studied. (C) 2014 Elsevier Ltd. All rights reserved.
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