Cu-Cr-Fe-Ni合金形变热处理过程中的组织与性能  

Microstructure and properties of Cu-Cr-Fe-Ni alloy during thermo-mechanical heat treatment processing

作　　者：靖青秀[1] 张泽辉 汪航[1] 杨斌[1] Jing Qingxiu;Zhang Zehui;Wang Hang;Yang Bin(College 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》2020年第4期84-89,共6页Heat Treatment of Metals

基　　金：国家科技部重点研发计划(2016YFB0301400)。

摘　　要：采用非真空熔炼并经热轧-固溶-冷轧-时效热处理工艺制备Cu-0. 59Cr-0. 078Fe-0. 081Ni合金板,探究热处理和冷变形对合金显微组织、电导率和硬度的影响。结果表明:Cu-Cr-Fe-Ni合金大气熔铸后呈明显的枝状晶组织,经固溶处理后合金发生再结晶,硬度和电导率都相应的降低,分别为65. 9 HV0. 2、41. 7%IACS;经过冷变形处理后合金的硬度显著提高,变形量达90%时,合金的硬度高达144. 7 HV0. 2;合金变形后在450℃时效的过程中硬度先增加后减少,变形量为60%时,时效30 min达到峰时效,此时硬度、电导率分别为155. 5 HV0. 2、71. 4%IACS。Cu-0. 59 Cr-0. 078 Fe-0. 081 Ni alloy was prepared by non-vacuum melting + hot rolling + solid solution treatment + cold rolling +aging. The effects of heat treatments and deformation processes on the microstructure,electrical conductivity and hardness of the alloy were investigated. The results show that after atmospheric melting and casting,the Cu-Cr-Fe-Ni alloy shows obvious dendritic structure. After solid solution treatment,the alloy recrystallizes,and the hardness and conductivity of it decrease correspondingly,with values of 65. 9 HV0. 2 and 41. 7% IACS,respectively. After cold rolling,the hardness of the alloy increases significantly. When the deformation amount reaches90%,the hardness of the alloy is as high as 144. 7 HV0. 2. After the deformation,the alloy hardness first increases and then decreases during the aging process at 450 ℃ .When the alloy deformation is 60%,the peak aging is reached at aging 30 min,leading the hardness and conductivity to 155. 5 HV0. 2 and 71. 4% IACS,respectively.

关 键 词：Cu-Cr-Fe-Ni合金 形变热处理 组织 硬度 电导率 

分 类 号：TG146.1[一般工业技术—材料科学与工程]