基于动态相变的CSiMn系热轧相变诱导塑性钢

钢铁研究学报, 2009, 21(5): 36-0.

基于动态相变的CSiMn系热轧相变诱导塑性钢

李建成 , 尹云洋 , 李龙飞 , 杨王玥 , 孙祖庆

1.1. 北京科技大学材料科学与工程学院, 北京 100083；2. 北京科技大学新材料国家重点实验室, 北京 100083

1.1. School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

关键词： TRIP钢;过冷奥氏体;动态相变;残余奥氏体;铁素体

Microstructure Control of Hot Rolled CSiMn TRIP Steel Based on Dynamic Transformation of Undercooled Austenite

LI Jiancheng , YIN Yunyang , LI Longfei , YANG Wangyue , SUN Zuqing

Keywords： TRIP steel;undercooled austenite;dynamic transformation;retained austenite;ferrite

利用热模拟压缩变形，扫描电子显微镜(SEM)，X射线衍射(XRD)以及金相实验，探讨了用过冷奥氏体动态相变控制低碳硅锰系相变诱导塑性(TRIP)钢组织的工艺过程，并初步研究了不同工艺条件下组织与性能的关系。结果表明：采用过冷奥氏体动态相变工艺控制TRIP钢的组织是可行的，用相应工艺得到的TRIP钢的抗拉强度达到Rm=900 MPa，伸长率A=24%。

The microstructure and mechanical properties of CSiMn TRIP steel based on the dynamic transformation of undercooled austenite were investigated by means of hot uniaxial compression, OM, SEM and XRD. The results show that the hot rolled TRIP steel can be manufactured by the process based on dynamic transformation of undercooled austenite, and the tensile strength of the investigated TRIP steel is up to 900 MPa with total elongation of 24%.

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