Microstructure and Properties of the Dispersion-Strengthened Cu-ZrO2 Composite for Application of Spot-Welding Electrode

Yu Song Xu; Cui Ping Jin; Peng Li; Yun Hua Xu

doi:10.4028/www.scientific.net/AMR.887-888.32

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 887-888Microstructure and Properties of the...

Microstructure and Properties of the Dispersion-Strengthened Cu-ZrO₂ Composite for Application of Spot-Welding Electrode

Abstract:

This paper prepared Cu-ZrO₂ composite by a modified internal oxidation in order to improve the high temperature strength of resistance Spot-welding electrode. The results showed that with the increasing of the cold deformation, Hardness increased while electrical conductivity decreases. Hardness reached 100HV and electrical conductivity was up to 86%IACS after cold drawn in 56%. With the increasing of annealing temperature and annealing time, Hardness of the composite decreased more slowly compared with the conventional Cu-Cr-Zr alloy and was higher than that of the Cu-Cr-Zr alloy after annealed above 700°C for 2h and at 600°C for 5h , which was attributed to the dispersion strengthening effect of the Zirconia particles. Thus, the Cu-ZrO₂ composite has good high-temperature stability and can be used for the electrode

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Periodical:

Advanced Materials Research (Volumes 887-888)

Pages:

32-38

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.887-888.32

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Online since:

February 2014

Authors:

Yu Song Xu, Cui Ping Jin*, Peng Li, Yun Hua Xu

Keywords:

Cu-ZrO₂ Composite, Internal Oxidation, Microstructure, Property, Spot-Welding Electrode

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