摘要
对5E61合金进行不同的均匀化退火处理,测试合金的显微硬度和电导率,用扫描电镜和透射电镜观察其显微组织,研究均匀化退火工艺对5E61合金组织及性能的影响。结果表明：5E61合金的显微硬度和电导率在均匀化退火过程中都有明显提高,双级均匀化后合金中的析出相更加细小,分布弥散;5E61合金经320℃×20 h＋450℃×20 h均匀化退火后,合金中的枝晶组织消除,晶界处残留第二相最少且合金组织中各元素分布均匀,为最优的均匀化退火工艺。
Effect of homogenization annealing on microstructure and properties of 5 E61 alloy was studied. Microhardness and conductivity of the alloy were tested,and microstructure was studied by means of scanning electron microscopy and transmission electron microscopy.The results show that the microhardness and conductivity of the 5 E61 alloy are significantly improved during homogenization annealing,and the precipitates in the alloy become finer and better dispersed after two-stage homogenization. After homogenization annealing at320 ℃ for 20 h and then at 450 ℃ for 20 h,the dendrite structure of the 5 E61 alloy is eliminated,the residual second phase at grain boundary is the least and the elements in the microstructure are uniformly distributed,indicating that it is the best homogenization annealing process.
作者
苏美华
文胜平
刘勇
王为
黄晖
聂祚仁
SU Mei-hua;WEN Sheng-ping;LIU Yong;WANG Wei;HUANG Hui;NIE Zuo-ren(College of Materials Science and Engineering,Beijing University of Technology,Beijing 100124,China)
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2018年第7期29-35,共7页
Transactions of Materials and Heat Treatment
基金
北京市科技计划课题(Z161100002116004)
海洋工程和货运车辆用新型耐蚀铝合金板材工业化制造技术(2I009011201701)
