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Deformation Behavior of Nanocrystalline Co-Cu Alloys

Published online by Cambridge University Press:  31 January 2011

Motohiro Yuasa ,
Hiromi Nakano ,
Kota Kajikawa ,
Takumi Nakazawa  and
Mamoru Mabuchi
Motohiro Yuasa
Affiliation:
yuasamotohiro@t03.mbox.media.kyoto-u.ac.jp, Kyoto University, Kyoto, Japan
Hiromi Nakano
Affiliation:
hiromi@crfc.tut.ac.jp, Toyohashi University of Technology, Toyohashi, Japan
Kota Kajikawa
Affiliation:
gabacho@t04.mbox.media.kyoto-u.ac.jp, Kyoto University, Kyoto, Japan
Takumi Nakazawa
Affiliation:
Nakazawa.Takumi@17chikyu.mbox.media.kyoto-u.ac.jp, Kyoto University, Kyoto, Japan
Mamoru Mabuchi
Affiliation:
mabuchi@energy.kyoto-u.ac.jp, Kyoto University, Kyoto, Japan
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Abstract

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.

Keywords

nanostructurestress/strain relationshipelectrodeposition
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1224: Symposia FF/GG – Mechanical Behavior at Small Scales — Experiments and Modeling , 2009 , 1224-FF10-32
Copyright
Copyright © Materials Research Society 2010

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References

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