高压和时效处理对铜铬合金电导率的影响
Effects of High Pressure and Aging Treatment on Electrical Conductivity of Cu-Cr Alloy
摘 要
研究了高压和时效处理对铜铬合金电导率的影响。结果表明: 高压处理能降低合金的电导率, 而高压处理后再经适当的时效处理能提高合金的电导率, 并能显著缩短电导率达到较高值所需的时效时间; 合金经3 GPa压力处理后再在500 ℃时效2 h, 可获得较高的电导率, 为18.76 MS·m-1。
高压处理
时效处理
电导率
Cu-Cr alloy
high pressure treatment
aging treatment
electrical conductivity
Abstract
Effects of high pressure and aging treatments on electrical conductivity of Cu-Cr alloy were studied. The results show that high pressure treatment could decrease electrical conductivity of the Cu-Cr alloy, however, high pressure treatment followed by optimum aging treatment could increase the electrical conductivity and remarkably shorten aging time to reach higher electrical conductivity. The higher electrical conductivity, 18.76 MS·m-1, could be obtained after the alloy was treated with 3 GPa pressure and followed by aging at 500 ℃ for 2 h.
中图分类号 TG146.2
所属栏目 材料性能及其应用
基金项目
收稿日期 2012/3/22
修改稿日期 2012/10/1
网络出版日期
作者单位点击查看
备注段文燕(1976-), 女, 河北秦皇岛人, 副教授, 硕士。
引用该论文: DUAN Wen-yan. Effects of High Pressure and Aging Treatment on Electrical Conductivity of Cu-Cr Alloy[J]. Materials for mechancial engineering, 2013, 37(3): 77～79
段文燕. 高压和时效处理对铜铬合金电导率的影响[J]. 机械工程材料, 2013, 37(3): 77～79
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参考文献
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【2】鲁世强,胡春文,李鑫,等.机械活化热压制备 CuCr50 触头材料的组织与性能［J］.稀有金属材料与工程, 2007,36(6):1041-1045.
【3】朱建娟,田保红,刘平.Cu-Cr合金触头材料制备技术的研究进展［J］.铸造,2006,55(11):1110-1113.
【4】梁淑华,范志康,胡锐.细晶CuCr 系触头材料的研究［J］.粉末冶金技术,2000,18(3):196-199.
【5】岳学庆,段文燕,薛云,等.高压固溶及常压时效处理对AM60镁合金组织及压缩性能的影响［J］.热加工工艺,2012,41(2):195-197.
【6】CHEN Y, LIU L, WANG Y H, et al. Microstructure evolution and thermal expansion of Cu-Zn alloy after high pressure heat treatment［J］. Trans Nonferrous Met Soc China, 2011,21(10):2205-2209.
【7】VERHOEVEN J D, CHUEH S C, GIBSON E D. Strength and conductivity of in situ Cu-Fe alloys［J］.J Mater Sci,1989,24:1748-1750
【8】常立民,肖莹,郝文光.形变与热处理对CuCr合金中Cr相形貌及性能的影响［J］.稀有金属材料与工程,2005,34(12):1952-1956.
【9】董企铭,苏娟华,刘平,等.Cu-0.7Cr-0.3Zr合金时效强化行为的研究［J］.材料科学与工艺,2004,12(6):630-632.
【10】WU LL, LIU L, LIU J H, et al. Effects of high pressure heat treatment on microstructure and micro-mechanical properties of Cu77.96Al22.04 alloy［J］.Matterials Transactions,2012,53(3):504-507.
【11】方俊鑫,陈栋.固体物理［M］.北京:高等教育出版社,1981:156.
【12】LU W, LIU L, LIU J H, et al. Influence of deformation and heat treatment on electrical conductivity of CuMoCr alloy［J］. Journal of Harbin Institute of Technology,2009,16(4):485-488.
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