碳当量对C-Mn型热轧双相钢组织性能的影响  

Effects of Carbon Equivalent on Microstructure and Properties of C-Mn Hot Rolled Dual-phase Steel

作　　者：董瑞峰[1,2] 李德刚[1,2] 闫波 王国栋[1] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110004 [2]包头钢铁集团有限公司薄板坯连铸连轧厂,内蒙古包头014010

出　　处：《轧钢》2011年第3期11-13,共3页Steel Rolling

摘　　要：在包钢CSP生产线上以普碳钢为原料开发热轧双相钢,其采用"减量化"原则进行化学成分设计。本文根据不同钢种连浇过程中的混浇钢水化学成分变化,对最佳工艺进行探索,分析了碳当量对热轧双相钢组织性能的影响。结果表明,当碳当量为0.32%时,试样组织为铁素体+马氏体,拉伸曲线均匀、光滑,初始硬化速率较高,具有良好的冲压成形性能。The hot rolled dual-phase steel taking carton steel as raw material was developed by reduction composition design principle.The effects of carbon equivalent on microstructure and properties of dual-phase steel was analyzed according the chemical change of mix molten.The result shows that the microstructure of DP steel is F＋P,the tensile curve is smooth,the original hardening rate is high and the stamping property is well while C_（eq）=0.32%.

关 键 词：碳当量 热轧双相钢 组织性能 

分 类 号：TG335.11[金属学及工艺—金属压力加工]