摘要
利用MMS-200热模拟试验机测定了07MnNiMoVDR钢的动态CCT曲线,研究了07MnNiMoVDR钢奥氏体连续冷却时的相变行为规律和显微组织。结果表明:随着冷却速度的增大,其组织由铁素体+珠光体逐渐向贝氏体转变;随冷却速度不同,在CCT图中存在两个相变区,即低冷速的先共析铁素体+珠光体相变区、中冷速的贝氏体相变区。
The dynamic CCT curves of 07MnNiMoVDR steel were determined by means of MMS-200 thermomechanical simulator.The phase transformation behavior and microstructure were investigated during continuous cooling.The results showed that with the cooling rate increase,the microstructure transformed gradually from ferrite and pearlite to bainite;and with different cooling rate,two phase transitions existed in the CCT diagram,that is,the pro-eutectoid ferrite and pearlite transformation area at low cooling rate and the bainite transformation area at middle cooling rate.
出处
《山东冶金》
CAS
2010年第5期35-36,共2页
Shandong Metallurgy
