变形制度对低碳锰钢组织性能的影响  

Influences of deformation parameters on microstructures and mechanical properties of low carbon manganese steel

作　　者：李龙[1] 唐正友[1] 丁桦[1] 杜林秀[2] 宋红梅[3] 郑芳[3] 

机构地区：[1]东北大学材料与冶金学院,沈阳110004 [2]东北大学轧制技术及连轧自动化国家重点实验室,沈阳110004 [3]宝钢集团公司技术中心,上海201900

出　　处：《材料科学与工艺》2009年第3期373-376,380,共5页Materials Science and Technology

基　　金：国家自然科学基金;上海宝钢集团公司联合资助项目(50271015)

摘　　要：为了获得细晶铁素体／贝氏体的复相组织，通过控轧控冷工艺研究了低碳锰钢在奥氏体区变形时变形量、终轧温度和卷取温度对组织演变和力学性能的影响规律．研究表明，增加变形量（对应道次间隔时间缩短）可以细化铁素体晶粒，但当终轧温度降低到800℃时，变形量的增加以及开冷温度的降低不利于贝氏体组织的获得．通过调整变形量、终轧温度、可开冷温度并适当降低卷取温度，可使实验钢获得晶粒尺寸约为5μm的铁素体和10％～20％的贝氏体组织，低碳锰钢强塑性能良好．In order to obtain the fine-grained ferrite/bainite duplex microstructure, influences of deformation amount, finish rolling temperature and coiling temperature on microstructures and mechanical properties of low carbon manganese steel were studied by thermo-mechanical controlled process （TMCP） experiments. The results indicate that the increase in deformation amount refines the ferrite grain but retards the formation of bain- ire at the finish rolling temperature of 800℃. The ferrite grain size of about 5 μm and 10% - 20% bainite can be gained by optimizing the deformation amount, finish rolling temperature, accelerating the cooling temperature and decreasing the coiling temperature. Good mechanical properties for low carbon manganese steel are obtained as well.

关 键 词：低碳锰钢 变形量 终轧温度 贝氏体 力学性能 

分 类 号：TG142.1[一般工业技术—材料科学与工程]