形变热处理对Cu-Ti-Fe-Sn合金组织与性能的影响  

Effect of thermo-mechanical heat treatment on microstructure and properties of Cu-Ti-Fe-Sn alloy

作　　者：靖青秀[1] 孙玉晴 肖翔鹏[1] 魏渺 彭勇[1] 黄晓东[1] Jing Qingxiu;Sun Yuqing;Xiao Xiangpeng;Wei Miao;Peng Yong;Huang Xiaodong(Faculty of Materials Metallurgy and Chemistry,Jiangxi University of Science and Technology,Ganzhou Jiangxi 341000,China)

机构地区：[1]江西理工大学材料冶金化学学部,江西赣州341000

出　　处：《金属热处理》2022年第10期24-30,共7页Heat Treatment of Metals

基　　金：国家自然科学基金(51561008)。

摘　　要：利用真空熔炼法制备了Cu-3Ti-0.2Fe-1Sn合金,通过均匀化退火、固溶+冷轧(变形量分别为40%、60%、80%)+450℃时效处理,研究了形变热处理对Cu-3Ti-0.2Fe-1Sn合金显微组织、导电率及硬度的影响。结果表明:真空熔炼制得的Cu-3Ti-0.2Fe-1Sn合金铸态组织中含有大量的枝状晶组织,经固溶处理后组织中出现了晶粒长大;铸态合金的硬度和导电率分别为178.1 HV和10.85%IACS,固溶处理后硬度和导电率都相应降低,分别为102.7 HV和4.58%IACS。经过冷变形和时效处理后Cu-3Ti-0.2Fe-1Sn合金硬度明显提高,变形量为60%时,时效480 min时硬度达到峰值,合金硬度为310.2 HV,此时合金的导电率为18.59%IACS。Cu-3 Ti-0.2 Fe-1 Sn alloy was prepared by the vacuum melting method. The alloy was treated by homogenization annealing, solution treatment, cold rolling(deformation of 40%, 60% and 80%, respectively) and aging at 450 ℃. The effect of thermo-mechanical on microstructure, conductivity and hardness of the alloy were investigated. The results show that microstructure of the as-cast Cu-3 Ti-0.2 Fe-1 Sn alloy prepared by vacuum melting contains a large amount of dendritic microstructure, and grain growth occurs in the microstructure after solution treatment. The hardness and conductivity of the as-cast alloy are 178.1 HV and 10.85%IACS, respectively. After solution treatment, the hardness and conductivity of the alloy are reduced to 102.7 HV and 4.58%IACS, respectively. After cold deformation and aging treatment, the hardness is obviously improved. When the deformation is 60%, the hardness aging for 480 min reaches the peak value, the hardness and conductivity of the Cu-3 Ti-0.2 Fe-1 Sn alloy are 310.2 HV and 18.59%IACS, respectively.

关 键 词：Cu-Ti合金 形变热处理 显微组织 硬度 导电率 

分 类 号：TG146.1[一般工业技术—材料科学与工程]