两相区部分奥氏体化对连续退火双相钢相变过程的影响  

Effect of Partial Austenitization in Two-Phase Region on Phase Transition of Continuous Annealing Dual Phase Steel

作　　者：祝志峰[1] 赵爱民[1] 赵征志[1] 唐荻[1] 牛枫[1] 

机构地区：[1]北京科技大学冶金工程研究院,北京100083

出　　处：《机械工程材料》2011年第7期27-30,共4页Materials For Mechanical Engineering

基　　金：北京市科委重大项目(D07010300700701);"十一五"国家科技支撑计划项目(2006BAE03A06)

摘　　要：将连续退火双相钢部分奥氏体化与完全奥氏体化后的CCT曲线进行对比分析,讨论了部分奥氏体化的影响。结果表明:部分奥氏体化后,该钢铁素体和贝氏体转变区的范围扩大,珠光体转变受到抑制且晶粒尺寸减小,马氏体转变的开始温度从368℃下降到349℃;部分奥氏体化时马氏体的转变温度区域大于完全奥氏体化时的。CCT curves of partial austenitization of continuous annealing dual phase steel were compared with that of complete austenitization and the effects of partial austenitization were discussed. The results show that ferrite and bainite transformation zones expanded after partial austenitization, pearlite transformation was inhibited and the grain size diminished, the beginning temperature of martensitic transition decreased from 368℃ to 349 ℃. The transition temperature zone of partial martenitization was larger than that of complete martenitization.

关 键 词：部分奥氏体化 双相钢 相变 CCT曲线 

分 类 号：TG151.1[金属学及工艺—热处理]