文献类型：期刊文献

中文题名：均匀化工艺对稀土铝合金电工圆杆组织和性能的影响

英文题名：Effect of Homogenization Process on Microstructure and Properties of Rare Earth Aluminum Alloy Electrical Round Rod

作者：林廷艺 卢燕 曲鹏举 张晓燕

第一作者：林廷艺

机构：[1]贵州理工学院工程训练中心,贵州贵阳550003;[2]贵州大学材料与冶金学院,贵州贵阳550025

第一机构：贵州理工学院工程训练中心

年份：2020

卷号：41

期号：2

起止页码：112-117

中文期刊名：稀土

外文期刊名：Chinese Rare Earths

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：贵州省教育厅青年科技人才成长项目(黔教合KY字[2018]243)。

语种：中文

中文关键词：铝合金电工圆杆;导电率;抗拉强度;均匀化

外文关键词：aluminum alloy electrical round rod;electrical conductivity;tensile strength;homogenization

摘要：采用拉伸力学性能测试、导电率测试、金相显微镜、扫描电镜(SEM)、能谱分析(EDS)以及X射线衍射仪(XRD)等手段,研究了稀土铝合金电工圆杆的组织和性能随均匀化工艺改变而发生的变化。结果表明,均匀化处理可达到细化晶粒、均匀试样组织,净化晶界的效果。与单级均匀化相比,双级均匀化可以使枝晶间未溶物显著减少,且第二相较均匀弥散地分布在基体中。试样在410℃保温2小时后升至425℃继续保温1小时,将获得较佳的综合性能:抗拉强度102 MPa,导电率57.96%IACS;对该试样进行形变量为83%的轧制处理后,强度升高至178 MPa,导电率有所降低,为57.06%IACS。
In the paper, the effects of double stage homogenization treatment on the electrical conductivity, tensile strength and microstructure of rare earth aluminum electrician round rod were investigated by means of tensile test, electrical conductivity test, optical microscopy(OM), scanning electron microscopy(SEM), energy dispersive spectroscopy(EDS) and X-ray diffraction(XRD). The results showed that after homogenization treatment of electrical aluminum alloy rod, its grain was obviously refined, the structure was more uniform and the grain boundary purification effect was clear. Compared with single stage homogenization treatment, interdendritic undissolved substances in double stage homogenization treatment were significantly reduced, and the second phases were distributed in the matrix evenly. Under the double stage homogenization treatment of 410 ℃×2 h+425 ℃×1 h, the sample had favorable comprehensive properties, its tensile strength and electrical conductivity could reach to 102 MPa, 57.96%IACS, respectively;After 83% rolling processing of specimen with better comprehensive performance, the tensile strength of samples could reach to 178 MPa, and the electrical conductivity was about 57.06%IACS.