Title: Aging Characteristics and Electrical Sliding Wear Properties of Cu-Cr-Ag-Y Alloy with High Strength and High Conductivity
Abstract: Effects of aging process parameters on microstructures and properties of a Cu-Cr-Ag-Y alloy which was produced by continuous casting, solution-treated and cold draw were investigated,and the aging characteristics of the alloy was analyzed.The electrical sliding wear experiment was carried out using a self-made electrical wear tester. The results reveal that the uniform precipitation of the spherical second phase from the copper matrix is the root cause of the improvement of comprehensive performance. A better combination of properties is obtained for the Cu-0.6Cr-0.15Ag-0.03 Y alloy aged at 450℃ for 4 h, the micro-hardness and electrical conductivity of the alloy are 245 Hv and 80.7%IACS, respectively. The wear loss of the alloy increased with increasing electrical current, and its electrical sliding wear mechanism is the electrical erosion wear, abrasive wear and adhesion wear.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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