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High-strength Cu–Zr binary alloy with an ultrafine eutectic microstructure

Published online by Cambridge University Press:  31 January 2011

Kyou-Hyun Kim,
Jae-Pyoung Ahn,
Jae-Hoon Lee and
Jae-Chul Lee
Kyou-Hyun Kim
Affiliation:
Department of Materials Science and Engineering, Korea University, Seoul 136-701, Korea
Jae-Pyoung Ahn
Affiliation:
Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 136-791, Korea
Jae-Hoon Lee
Affiliation:
Light Material team, Korea Institute of Industrial Technology, Incheon, Korea
Jae-Chul Lee*
Affiliation:
Department of Materials Science and Engineering, Korea University, Seoul 136-701, Korea
*
a)Address all correspondence to this author. e-mail: jclee001@korea.ac.kr
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Abstract

In this study, we synthesized Cu–Zr binary alloys reinforced with an ultrafine eutectic microstructure. The alloys consisted of alternating layers of a hard superlattice phase and a ductile Cu phase with a very fine interlamellar spacing of ∼60 nm. The superlattice phase enhanced the strength of the alloys while the laminated composite structure helped improve their plasticity, making their mechanical properties comparable to those of the earlier reported high strength alloys. This paper discusses the fundamental microstructural aspects that influence the mechanical properties of these alloys.

Keywords

CastingCompositeNanostructure

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Type
Articles
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Journal of Materials Research , Volume 23 , Issue 7 , July 2008, pp. 1987 - 1994
Copyright
Copyright © Materials Research Society 2008

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References

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