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加热温度对TRIP钢连续冷却转变曲线及室温组织的影响
引用本文:范东亮,米振莉,李志超,刘强.加热温度对TRIP钢连续冷却转变曲线及室温组织的影响[J].北京科技大学学报,2011,33(4):434-438.
作者姓名:范东亮  米振莉  李志超  刘强
作者单位:北京科技大学高效轧制国家工程研究中心;
基金项目:国家高技术研究发展计划资助项目(No.2008AA03Z502)
摘    要:采用膨胀法在DIL805热膨胀仪上测定了不同加热温度下实验钢的连续冷却转变(CCT)曲线,通过光学显微镜和扫描电镜分析不同加热温度对CCT曲线和冷却试样显微组织的影响.结果表明:当加热温度由完全奥氏体化温度降低到两相区内较高温度时,CCT曲线中铁素体转变区左移;当加热温度处在两相区范围内时,随着加热温度的降低,铁素体转变被推迟,使得CCT曲线右移;新生铁素体外延生长方式和奥氏体中碳富集程度的差异是导致上述变迁的主要因素.

关 键 词:TRIP钢  连续冷却转变  微观组织  外延生长

Effect of heating temperature on the continuous cooling transformation and microstructure of TRIP steel
FAN Dong-liang,MI Zhen-li,LI Zhi-chao,LIU Qiang.Effect of heating temperature on the continuous cooling transformation and microstructure of TRIP steel[J].Journal of University of Science and Technology Beijing,2011,33(4):434-438.
Authors:FAN Dong-liang  MI Zhen-li  LI Zhi-chao  LIU Qiang
Institution:FAN Dong-liang,MI Zhen-li,LI Zhi-chao,LIU Qiang National Engineering Research Center for Advanced Rolling Technology,University of Science and Technology Beijing,Beijing 100083,China
Abstract:The continuous cooling transformation(CCT) curves of experimental steel were determined by thermal dilation method with a DIL805 thermal dilatometer.Optical microscopy and scan electron microscopy(SEM) were used to analyze the effect of heating temperature on the CCT curves and the microstructure of cooled samples.Experimental results show that when the heating temperature decreases from the complete austenitizing temperature to a higher temperature of the two-phase region,the ferrite transformation of the ...
Keywords:TRIP steel  continuous cooling transformation  microstructure  epitaxial growth  
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