期刊
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
卷 166, 期 2, 页码 193-198出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2004.08.013
关键词
in situ composite; Cu-Cr alloy; thermal stability; M index
The in situ composite Cu-Cr alloy, a new type of potential electric material that can be used for contact cables, is reported in this paper. The combination property and thermal stability of the in situ composite Cu-Cr alloy were investigated. Experimental results showed that the in situ composite Cu-Cr alloy has not only high room temperature properties, including ultimate tensile strength Orb, elongation rate 5, relative conductivity sigma(r), and combination property that is scaled by M index (sigma(2)(b)kappa(r)), but also excellent thermal stability of these properties. At room temperature, the combination property of in situ composite Cu-Cr could be up to 18.3 x 10(6) MPa2%, which is higher than those of commonly used copper contact cables all over the world. After being heated for 3 h at 500 degrees C, the combination property of the in situ composite Cu-Cr alloy only decreased 3%. In this paper, the relationship between thermal stability and strengthening mechanism of in situ composite alloy was analyzed. (c) 2004 Elsevier B.V. All rights reserved.
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