|
| 高强高导Cu-Cr-Ag-Y合金的时效特征及其载流滑动磨损性能 |
| Aging Characteristics and Electrical Sliding Wear Properties of Cu-Cr-Ag-Y Alloy with High Strength and High Conductivity |
| 投稿时间：2014-07-03 |
| DOI： |
| 中文关键词: 金属材料 Cu-Cr-Ag-Y合金 时效处理 组织与性能 载流磨损 |
| 英文关键词: metal materials Cu-Cr-Ag-Y alloy aging microstructure and property electrical sliding wear |
| 基金项目:国家自然科学基金项目(51164015)、云南省省院省校科技合作项目(2012IB002)、云南省应用基础研究项目(2011FB126)和昆明市科技创新团队项目(20120101AR070005)。 |
|
| 摘要点击次数: 3565 |
| 全文下载次数: 3101 |
| 中文摘要: |
| 对经过连续铸造、固溶和冷拉拔的Cu-Cr-Ag-Y合金进行时效处理，研究了时效工艺参数对合金组织和性能的影响，探讨了合金的时效特征，并在自制磨损试验机上对合金线材进行载流滑动磨损试验。结果表明:铜基体中球形第二相的均匀析出是合金综合性能提高的根本原因。Cu-0.6Cr-0.15Ag-0.03Y合金经450℃/4 h时效处理后可以获得较好的综合性能，其显微硬度与导电率达到245Hv和80.7% IACS。随着加载电流的增加，合金磨损量变大，其载流磨损机制为电侵蚀磨损、磨粒磨损和粘着磨损。 |
| 英文摘要: |
| 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-0.03Y alloy aged at 450℃ for 4 h, the micro-hardness and electrical conductivity of the alloy are 245Hv 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. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
