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http://dx.doi.org/10.12656/jksht.2020.33.5.226

Hardness and Electrical Conductivity Changes according to Heat Treatment of Cu-1.6Co-0.38Si Alloy  

Kwak, Wonshin (Institute of Material Technology, Poongsan Corporation)
Lee, Sidam (Institute of Material Technology, Poongsan Corporation)
Publication Information
Journal of the Korean Society for Heat Treatment / v.33, no.5, 2020 , pp. 226-231 More about this Journal
Abstract
The Cu-Co-Si alloy shows high strength by forming precipitates by aging precipitation heat treatment of supersaturated solid solution treated with solution treatment such as Cu-Ni-Si alloy, and the Co2Si precipitated phase is dispersed in the copper matrix. The effect of aging treatment on the microstructure, mechanical and electrical properties of Cu-Co-Si alloys for electronic devices was investigated. As a results of SEM/EDS analysis, it was found that Co2Si precipitates of 30~300 nm size were distributed in grains. By performing the double aging treatment, it was possible to improve the strength and electrical conductivity by dispersing the fine precipitate evenly.
Keywords
Cu-Co-Si alloy; Precipitation; Aging treatment; Double stage aging; Electrical conductivity;
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