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Received: 2008-05-22

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Journal of Zhejiang University SCIENCE A 2009 Vol.10 No.3 P.458~463

http://doi.org/10.1631/jzus.A0820389


Morphology evolution of two-phase Cu-Ag alloys under different conditions


Author(s):  Jin-li HU, Jin-dong ZHANG, Liang MENG

Affiliation(s):  Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   mengliang@zju.edu.cn

Key Words:  Cu-Ag alloy, Microstructure, Strain, Filamentary composite


Jin-li HU, Jin-dong ZHANG, Liang MENG. Morphology evolution of two-phase Cu-Ag alloys under different conditions[J]. Journal of Zhejiang University Science A, 2009, 10(3): 458~463.

@article{title="Morphology evolution of two-phase Cu-Ag alloys under different conditions",
author="Jin-li HU, Jin-dong ZHANG, Liang MENG",
journal="Journal of Zhejiang University Science A",
volume="10",
number="3",
pages="458~463",
year="2009",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A0820389"
}

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%T Morphology evolution of two-phase Cu-Ag alloys under different conditions
%A Jin-li HU
%A Jin-dong ZHANG
%A Liang MENG
%J Journal of Zhejiang University SCIENCE A
%V 10
%N 3
%P 458~463
%@ 1673-565X
%D 2009
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A0820389

TY - JOUR
T1 - Morphology evolution of two-phase Cu-Ag alloys under different conditions
A1 - Jin-li HU
A1 - Jin-dong ZHANG
A1 - Liang MENG
J0 - Journal of Zhejiang University Science A
VL - 10
IS - 3
SP - 458
EP - 463
%@ 1673-565X
Y1 - 2009
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A0820389


Abstract: 
Cu-Ag filamentary microcomposites with different Ag contents were prepared by cold drawing and intermediate heat treatments. The microstructure characterization and filamentary distribution were observed for two-phase alloys under different conditions. The effect of heavy drawing strain on the microstructure evolution of cu-Ag alloys was investigated. The results show that the microstructure components consist of Cu dendrites, eutectic colonies and secondary Ag precipitates in the alloys containing 6%~24% (mass fraction) Ag. With the increase in Ag content, the eutectic colonies in the microstructure increase and gradually change into a continuous net-like distribution. The Cu dendrites, eutectic colonies and secondary Ag precipitates are elongated in an axial direction and developed into the composite filamentary structure during cold drawing deformation. The eutectic colonies tend to evolve into filamentary bundles. The filamentary diameters decrease with the increase in drawing strain degree for the two-phase alloys, in particular for the alloys with low Ag content. The reduction in filamentary diameters becomes slow once the drawing strain has exceeded a certain level.

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