轧制工艺对双辊铸轧AZ61镁合金组织性能的影响  

Effects of Rolling Process on Microstructure and Properties of Twin Rolling-casting AZ61 Magnesium Alloy Strip

作　　者：许光明[1] 王东钢[2] 李金涛[1] 崔建忠[1] 

机构地区：[1]东北大学材料电磁过程研究教育部重点实验室 [2]浙江工商职业技术学院

出　　处：《特种铸造及有色合金》2009年第7期599-600,共2页Special Casting & Nonferrous Alloys

基　　金：国家重点基础研究发展计划(973计划)资助项目(2007641547703)

摘　　要：研究了利用双辊铸轧镁合金铸轧坯直接进行热轧的生产工艺,研究了不同热轧工艺过程对产品品质的影响。研究表明,在400℃热轧时,随着压下量增加,铸轧镁合金显微组织的再结晶程度提高,晶粒细化;随着轧制温度的提高,显微组织中孪晶减少,再结晶程度提高,晶粒变得均匀且细小;在400℃下连续热轧到1.5mm,得到的板材力学性能最优。Effects of different hot rolling processing parameters on microstructure and mechanical properties of twin rolling-casting AZ61 magnesium alloy strip were investigated. The results indicate that with hot rolling at 400℃,the grain size in the microstructure of the rolling-casting AZ61 magnesium alloy is refined as a result of the increase of recrystallization with increasing in reduction. In addition,with increasing rolling temperature,twin crystal is reduced and recrystallization is increased in the microstructure,resulting in the refinement and uniform distribution of grain. The sheets exhibit desirable mechanical properties with hot rolling at 400 ℃ to 1.5 mm in thickness.

关 键 词：AZ61镁合金 铸轧板 热轧 孪晶 

分 类 号：TG146.22[一般工业技术—材料科学与工程]