MGH754合金冷轧板材的再结晶行为  

Recrystallization Behavior of the MGH754 Cold-Rolled Sheet

作　　者：雷喆[1] 柳光祖[1] 杨峥[1] 

机构地区：[1]钢铁研究总院高温材料研究所,北京100081

出　　处：《钢铁研究学报》2013年第5期49-53,共5页Journal of Iron and Steel Research

摘　　要：通过扫描电镜EBSD技术与透射电镜研究分析了不同温度的预退火和二次退火对MGH754合金冷轧板材显微组织结构和微区织构变化的影响。研究表明,MGH754合金冷轧板材在700到800℃之间即发生一次再结晶,高温预退火与二次退火均不能使MGH754合金冷轧板材发生二次再结晶。在预退火过程中,板材从冷轧态锋锐的{110}<112>形变织构逐渐转变为{225}<253>再结晶织构。而二次退火后的再结晶织构与高温预退火后产生的再结晶织构又有所不同。Through the analysis of microstructure of col＆rolled MGH754 alloy sheet after pre-annealing and secondary- annealing using scanning electron microscopy EBSD system and transmission electron microscopy, the effect of pre-annealing and secondary-annealingon microstructure and texture of Lhe alloy sheet was investigated. The results show that the cold-rolled sheet recrystallizes between 700 and 800 ℃, but the sheet cannot grow into coarsegrained either after pre-annealing or secondary-annealing. Additionally, the strong deformation texture { 110 } 〈 112〉 is gradually transformed into the recrystallization texture { 225}〈253〉 during pre-annealing, and the secondary- annealing texture differs from the pre-annealing one.

关 键 词：MGH754合金冷轧板材 预退火 二次退火 再结晶 织构 

分 类 号：TG335.12[金属学及工艺—金属压力加工]