均匀化退火对耐热铝合金导线组织与性能的影响  

Effects of Homogenization Annealing on Microstructure and Properties of Heat-resistant Aluminum Alloy Wires

作　　者：张填昊 陈非[3] 王泽青 张晓东[3] ZHANG Tianhao;CHEN Fei;WANG Zeqing;ZHANG Xiaodong(School of Chemical and Biological Engineering,Nantong Vocational University,Nantong 226007,China;College of Engineering and Applied Sciences,Nanjing University,Nanjing 210023,China;Center for Molecular Science and Engineering,Northeastern University,Shenyang 110000,China)

机构地区：[1]南通职业大学化工与生物工程学院,江苏南通226007 [2]南京大学现代工程与应用科学学院,江苏南京210023 [3]东北大学分子科学与工程中心,辽宁沈阳110000

出　　处：《热加工工艺》2023年第2期147-150,共4页Hot Working Technology

基　　金：江苏省博士后科研资助计划项目(1701036B)。

摘　　要：对耐热铝合金导线用Al-Fe-Zr-Si-B铸态合金进行了不同温度、时间的均匀化退火试验,采用OM、SEM、导电率测试、硬度测试等研究了不同均匀化退火对Al-Fe-Zr-Si-B合金组织与性能的影响。结果表明:铸态Al-Fe-Zr-Si-B合金组织偏析较为严重,网状枝晶明显。经565℃×2 h均匀化处理的合金中大部分片层状的Al FeSi相发生熔断,呈短棒状、细长条状,组织均匀,合金的导电率和硬度分别为57.8%IACS和37.1 HV,综合性能匹配最好。Al-Fe-Zr-Si-B合金的最佳均匀化退火工艺为565℃×2 h。The homogenization annealing tests of as-cast Al-Fe-Zr-Si-B alloy for heat-resistant aluminum alloy wires were carried out at different temperatures and time. The effects of homogenization annealing on the microstructure and properties of Al-Fe-Zr-Si-B alloy were studied by OM, SEM, conductivity test and hardness test. The results show that the microstructure segregation of as-cast Al-Fe-Zr-Si-B alloy is serious and the network dendrite is obvious. In the alloy treated at565 ℃ ×2 h, most lamellar Al FeSi phases melt, showing short bar shape, elongated strip shape and uniform structure. The conductivity and hardness of the alloy are 57.8% IACS and 37.1 HV, respectively. The best comprehensive properties matching of the alloy is obtained. The optimal homogenization annealing process of Al-Fe-Zr-Si-B alloy is 565 ℃×2 h.

关 键 词：Al-Fe-Zr-Si-B合金 均匀化退火 显微组织 硬度 导电性 

分 类 号：TG166.3[金属学及工艺—热处理]