Hostname: page-component-848d4c4894-p2v8j Total loading time: 0.001 Render date: 2024-05-30T01:45:00.339Z Has data issue: false hasContentIssue false

Deformation Behavior of Nanocrystalline Co-Cu Alloys

Published online by Cambridge University Press:  31 January 2011

Motohiro Yuasa
Affiliation:, Kyoto University, Kyoto, Japan
Hiromi Nakano
Affiliation:, Toyohashi University of Technology, Toyohashi, Japan
Kota Kajikawa
Affiliation:, Kyoto University, Kyoto, Japan
Takumi Nakazawa
Affiliation:, Kyoto University, Kyoto, Japan
Mamoru Mabuchi
Affiliation:, Kyoto University, Kyoto, Japan
Get access


Three kinds of nanocrystalline Co-Cu alloys: a nanocrystalline Co-Cu alloy with nanoscale lamellar structure, a supersaturated solid solution Co-Cu alloy and a nanocrystalline two-phase Co-Cu alloy were processed by electrodeposition, and their mechanical properties were investigated at room temperature. These nanocrystalline Co-Cu alloys showed the high hardness and the low activation volume. The mechanical properties of the nanocrystalline Co-Cu alloys strongly depended on the grain boundary characteristics. Molecular dynamics simulations were performed in the two-phase nanocrystalline Co-Cu alloy to investigate the dislocation emission at the Co/Cu interface. The MD simulations showed that the stacking faults, which are generated by the intense geometrical strain at the Co/Cu interface, play an important role in the dislocation emission.

Research Article
Copyright © Materials Research Society 2010

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)


1 Wang, N, Wang, Z, KT, Aust, Erb, U (1997) Mater Sci Eng A237:150.Google Scholar
2 Iwasaki, H, Higashi, K, TG, Nieh (2004) Scripta Mater 50:395.Google Scholar
3 Schiotz, J, FDD, Tolla, KW, Jacobsen (1998) Nature 391:561.Google Scholar
4 RJ, Asaro, Suresh, S (2005) Acta Mater 53:3369.Google Scholar
5 KS, Kumar, HV, Swygenhoven, Suresh, S (2003) Acta Mater 51:5743.Google Scholar
6 Jiang, Z, Zhang, H, Gu, C, Jiang, Q, Lian, J (2008) J Appl Phys 104:053505.Google Scholar
7 HV, Swygenhoven, PM, Derlet, AG, Frøseth (2006) Acta Mater 54:1975.Google Scholar
8 Dao, M, Lu, L, RJ, Asaro, JTMD, Hosson, Ma, E (2007) Acta Mater 55:4041.Google Scholar
9 YM, Wang, AV, Hamza, Ma, E (2006) Acta Mater 54:2715.Google Scholar
10 Nakamoto, Y, Yuasa, M, Chen, Y, Kusuda, H, Mabuchi, M (2008) Scripta Mater 58:731.Google Scholar
11 YF, Shen, Lu, L, QH, Lu, ZH, Jin, Lu, K (2005) Scripta Mater 52:989.Google Scholar
12 YF, Shen, Lu, L, Dao, M, Suresh (2006) Scripta Mater 55:319.Google Scholar
13 Lu, L, Schwaiger, R, ZW, Shan, Dao, M, Lu, K (2005) Acta Mater.53:2169.Google Scholar
14 AA, Karimpoor, Erb, U, KT, Aust, Palumbo, G (2003) Scripta Mater 49:651.Google Scholar