Al-Er-Cu合金架空导线的导电性能  

Conductive property of Al-Er-Cu alloy for overhead wire

作　　者：马晓杰[1] 刘立宁[1] 陈祥光[1,2] 臧伟 Ma Xiaojie;Liu Lining;Chen Xiangguang;Zang Wei(College of Engineering,Yantai Nanshan University,Yantai Shandong 265713,China;School of Chemistry and Chemical Engineering,Beijing Institute of Technology,Beijing 100081,China;Shandong Nanshan Aluminum Co.,Ltd.,Yantai Shandong 265713,China)

机构地区：[1]烟台南山学院工学院,山东烟台265713 [2]北京理工大学化学与化工学院,北京100081 [3]山东南山铝业股份有限公司,山东烟台265713

出　　处：《金属热处理》2021年第5期156-160,共5页Heat Treatment of Metals

基　　金：山东省重点研发计划(2017GGX20130);烟台市“双百计划”人才项目(YT201803)。

摘　　要：通过导电率、硬度测试方法研究了Al-Er-Cu合金在等时时效与等温时效过程中的性能变化规律,利用透射电镜(TEM)、能谱分析(EDS)观察了合金析出相的析出及生长规律。结果表明:随着时效温度升高,整体上同一合金的导电率与硬度峰值出现时间均提前;300℃时效时,Al-Er-0.22Cu合金已经析出大量纳米级弥散相,析出强化了合金强度,提高了导电率,时效2 h时达到导电率峰值60.15%IACS,10 h达到硬度峰值43.1 HV0.05,Al-Er-0.22Cu合金在拥有高导电率的同时保持了较好的硬度。Properties change rule of the Al-Er-Cu alloy during aging was studied via electrical conductivity and hardness testing.The precipitation and growth law of the precipitated phase in the alloy were observed by means of TEM and EDS.The results show that with the increase of aging temperature,both electrical conductivity and hardness peaks of the same alloy appear earlier on the whole.When aged at300℃,there are a lot of dispersed nano-precipitates in the Al-Er-0.22 Cu alloy,and the precipitated phases reinforce the alloy strength and enhance the electrical conductivity.When aged for 2 h,the electrical conductivity reaches the peak value of 60.15%IACS and the hardness peak of 43.1 HV0.05 achieves when aged for 10 h,so the Al-Er-0.22 Cu alloy has both high electrical conductivity and good hardness.

关 键 词：Al-Er-Cu合金 导电率 时效 弥散相 析出强化 

分 类 号：TN604[电子电信—电路与系统]