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。
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.
参考文献
| [1] | 吴朋越,谢水生,黄国杰.高速列车用铜合金接触线用材料及其加工工艺[J].稀有金属,2006(02):203-208. |
| [2] | 王松,张吉明,陈永泰,王塞北,谢明.时效态Cu-1.5％Cr合金的组织与性能研究[J].稀有金属与硬质合金,2014(02):64-68. |
| [3] | Lu L;Shen Y F;Chen X H et al.Ultrahigh strength and high electrical conductivity in copper[J].SCIENCE,2004,304:422-426. |
| [4] | Su JH;Dong QM;Liu P;Li HJ;Kang BX .Research on aging precipitation in a Cu-Cr-Zr-Mg alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):422-426. |
| [5] | XIE Haofeng,MI Xujun,HUANG Guojie,GAO Baodong,YIN Xiangqian,LI Yanfeng.Effect of thermomechanical treatment on microstructure and properties of Cu-Cr-Zr-Ag alloy[J].稀有金属（英文版）,2011(06):650-656. |
| [6] | 慕思国,曹兴民,汤玉琼,向朝建,杨春秀,郭富安,唐谟堂.时效态Cu-Cr-Zr-Mg-RE合金的组织与性能[J].中国有色金属学报,2007(07):1112-1118. |
| [7] | Huaqing LI,Shuisheng XIE,Xujun MI,Pengyue WU.Phase and Microstructure Analysis of Cu- Cr-Zr Alloys[J].材料科学技术学报（英文版）,2007(06):795-800. |
| [8] | 陈小红,刘平,田保红,张毅,贾淑果,任凤章,井晓天.Cu-15Cr-0.1Zr原位复合材料中纤维相的组织演变[J].功能材料,2008(12):2011-2014. |
| [9] | A. Vinogradov;V. Patlan;Y. Suzuki .Structure and properties of ultra-fine grain Cu-Cr-Zr alloy produced by equal-channel angular pressing[J].Acta materialia,2002(7):1639-1651. |
| [10] | 齐卫笑,涂江平,杨友志,耐艳,张家涛,王甘国友,刘芙,张孝彬,刘茂森.时效处理对低溶质Cu-Cr-Zr合金力学和电滑动磨损性能的影响[J].摩擦学学报,2001(06):405-409. |
| [11] | 苏娟华,董企铭,刘平,李贺军,田保红.不同固溶方式对引线框架Cu-Cr-Sn-Zn合金时效组织和性能的影响[J].金属热处理,2005(05):49-52. |
| [12] | 周海涛,钟建伟,周啸,赵仲恺,李庆波.多级形变时效对Cu-Cr-Zr合金组织和性能的影响[J].材料热处理学报,2009(03):141-145. |
| [13] | 刘勇,刘平,李伟,田保红.Cu-Cr-Zr-Y合金时效析出行为研究[J].功能材料,2005(03):377-379. |
| [14] | Li H Q;Xie S S;Mi X J et al.Influence of Cerium and Yttrium on Cu-Cr-Zr alloys[J].Journal of Rare Earths,2006,24(Spec.Issue):367-371. |
| [15] | 王俊峰,贾淑果,陈少华,刘平,宋克兴.热轧态Cu-Ni-Si-Mg合金的时效动力学[J].材料热处理学报,2012(07):33-36. |
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