时效制度对LC52铝合金组织与性能的影响  

Effects of Ageing Treatment on Structure and Properties of LC52 Aluminum Alloy

作　　者：林高用[1] 张颖[1] 杨立斌[1] 彭大暑[1] 

机构地区：[1]中南大学材料科学与工程学院

出　　处：《金属热处理》2004年第10期32-35,共4页Heat Treatment of Metals

基　　金：塑性成形模拟及模具技术国家重点实验室开放基金资助 ( 0 4-6)

摘　　要：研究了在单级时效、双级时效、回归再时效 (RRA)处理条件下 ,LC5 2铝合金的微观组织、室温力学性能、抗剥落腐蚀性能和应力腐蚀开裂敏感性。结果表明 ,LC5 2铝合金经 12 0℃× 2 4h +2 5 0℃× 2min(油浴 ) +12 0℃×30h回归再时效处理后 。The microstructure,mechanical properties at room temperature, exfoliation corrosion resistance and the stress-corrosion-cracking sensitivity of LC52 aluminum alloy were studied under different ageing processes. The results show that after retrogression and re-aging at 120℃×24h+250℃×2min(oil bath) +120℃×30h,the alloy possesses good comprehensive properties.

关 键 词：LC52铝合金 时效 回归再时效 剥落腐蚀 应力腐蚀开裂敏感性 

分 类 号：TG166.3[金属学及工艺—热处理]