1800MPa级热冲压钢的研究  

Research on 1 800 MPa Class Hot Forming Steel

作　　者：宋佳男 李海阳 张梅[1,2,3] 

机构地区：[1]省部共建高品质特殊钢冶金与制备国家重点实验室,上海200072 [2]上海市钢铁冶金新技术开发应用重点实验室,上海200072 [3]上海大学材料科学与工程学院,上海200072

出　　处：《上海汽车》2017年第2期40-43,共4页Shanghai Auto

摘　　要：以DIL805型热膨胀仪和Gleeble3500热力模拟实验机为平台,利用热膨胀法结合金相法,分别研究了新开发1 800 MPa级热成形钢B1800HS的静态连续冷却转变曲线和10%变形量下的动态连续冷却转变曲线,并对不同冷却速度下的显微组织和硬度变化进行了观察和检测分析,用于指导热成形试验的工艺参数制定。The continuous cooling transformation curves under 10% deformed and un - de- formed conditions of a novel developed 1800MPa class hot forming steel B1800HS are obtained through thermal expansion method and metallographic method, by means of DILS05 dilatometer and Gleeble - 3500. Microstructure transformation and hardness under different cooling rates are investigated. Both of static and dynamic continuous cooling transformation （CCT） diagrams are established. Results could be taken to choose or optimize the hot forming process parameters.

关 键 词：连续冷却转变特性 组织转变 CCT图 热膨胀仪 

分 类 号：TG142.1[一般工业技术—材料科学与工程]