均匀化退火对Al-Cu-Mg-Ag系合金组织和性能的影响  

Effect of Homogenizing Annealing on Microstructure and Properties in Al-Cu-Mg-Ag Alloy

作　　者：夏卿坤[1] 刘志义[1] 余日成[1] 李云涛[1] 

机构地区：[1]中南大学材料科学与工程学院

出　　处：《热加工工艺》2006年第14期8-10,共3页Hot Working Technology

基　　金：湖南省教育厅科研基金资助项目(04C004)

摘　　要：通过差热分析(DTA)、金相组织观察等手段,分析了不同均匀化工艺对Al-Cu-Mg-Ag铝合金的微观组织和力学性能的影响。结果表明,采用接近低熔点共晶熔化的温度均匀化退火后,合金的枝晶偏析得以消除,晶内成分分布均匀。合金室温抗拉强度达到470MPa,对应的伸长率也达到8%～10%。Based on differential thermal analysis （DTA）, optical microscope, the effect of different kinds of homogenization heat treatments performing on microstructures and mechanical properties of Al-Cu-Mg-Ag aluminum alloy was investigated. The results show that the processing of homogenizing heat treatment, of which the temperature is close to the melting point of non-equilibrium eutectic phases, can be made the alloy obtain a fine grain boundary and the dendrites segregation is eliminated almost; the structure distributes equality. The second phase solution into the Al matrix. The alloy＇s tensile strength is about 470MPa and the elongation is about 8%～10%.

关 键 词：AL-CU-MG-AG合金 均匀化退火 显微组织 性能 

分 类 号：TG146[一般工业技术—材料科学与工程] TG156.2[金属学及工艺—金属材料]