Affiliation:
1. Henan Pinggao Electric Co.Ltd.
Abstract
Although alloy QCr0.5 has been used as the contact materials in the high-voltage equipment extensively, but it always confronts the awkwardness of over aging in the heat treatment, and results in brittleness during the switching on and breaking process. In the present work by the technology of interalloy-adding, the Zr-containing alloy Cu-0.8Cr-0.2Zr has been prepared and investigated. The results of the microstructure and properties indicate that the alloy matrix maintains FCC microstructure and lots of Zr-containing precipitation is dispersed in the matrix uniformly. The brinell hardness, the ultimate tensile strength and the elastic modulus increase greatly, reach 140 MPa, 430 Mpa and 130 GPa respectively, meanwhile the electric conductivity maintains 75%IACS and the softening temperature is up to 550 °C.
Publisher
Trans Tech Publications, Ltd.
Reference10 articles.
1. Y. J Wang, Z. F Li, et al. The development situation of electrical contact materials, The academic seminar collection of the twelfth Chinese nonferrous metal materials science and alloy processing technology [C] (2007) 132-138. (In chinese).
2. Q. H Ye, P Liu. Review of high-strength and high-conductivity Cu-Cr-Zr alloys [J], Journal of Henan University of Science and Technology 26(5) (2005) 1-4. (In chinese).
3. A Vinogradov, V Patlan, et al. Structure and properties of ultra-fine grain Cu-Cr-Zr alloy produced by equal-channel angular pressing [J], Acta Materialia 50(7) (2002) 1639-1651.
4. A Takeuchi, A Inoue. Classification of bulk metallic glasses by atomic size difference, heat of mixing and period of constituent elements and its application to characterization of the main alloying element, Materials Transactions 46 (2005).
5. S. Y Zhang The latest metal speed manual of the performance-application and comparison of Chinese and foreign brands [M]. Chinese Science and Technology Press (2005) 1036-1164. (In chinese).
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献