期刊
INTERNATIONAL JOURNAL OF PLASTICITY
卷 49, 期 -, 页码 152-163出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijplas.2013.03.005
关键词
Cu/Co multilayers; Strengthening; Twins; Stacking faults; Partial dislocations
资金
- NSF-DMR [0644835]
- NSF-CMMI [1129065]
- NSFC [50801036]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1129065] Funding Source: National Science Foundation
We investigate the interfaces and mechanical properties of sputtered, highly (1 0 0) and (1 1 1) textured Cu/Co multilayers. In (1 0 0) Cu/Co multilayers, Co has primarily face-centered-cubic (FCC) structure and high density of inclined stacking faults (SFs). In contrast in (1 1 1) textured Cu/Co, dependent on layer thickness, high density SFs and twins parallel to layer interface are observed. When individual layer thickness, h, is a few nanometers, both systems have fully coherent FCC interface. (1 1 1) Cu/Co has similar size dependent strengthening and peak hardness compared to (1 1 1) Cu/Ni multilayers. The peak strength of (1 0 0) Cu/Co may be dominated by the transmission of partial dislocations across interface, and hence it is lower than the peak strength of (1 0 0) Cu/Ni, which is dictated by transmission of full dislocations across interfaces. Published by Elsevier Ltd.
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