冷轧压下率对高强度热镀锌双相钢组织性能的影响  

Effects of cold rolling reduction ratio on microstructure and properties of high strength hot dip galvanized dual phase steel

作　　者：李守华[1] 卢淋 江海涛[2] 

机构地区：[1]河北钢铁集团邯郸钢铁集团有限责任公司,河北邯郸056015 [2]北京科技大学冶金工程研究院,北京100083

出　　处：《轧钢》2014年第5期6-8,共3页Steel Rolling

摘　　要：实验研究了冷轧压下率对高强度热镀锌双相钢基板性能的影响。结果表明:实验钢板为典型的铁素体+岛状马氏体的双相组织,随着冷轧压下率的增加,马氏体体积分数逐渐增加,抗拉强度最高达910MPa,而屈服强度、初始硬化指数n值及塑性应变比r值几乎没有变化,伸长率在14%以上。Under laboratory conditions, the study about performance of the high strength hot dip galvanized dual phase steel with different cold rolling reduction ratio was carried. The results show that typical dual phase structure with ferrite and martensite can be observed in the experimental steel. With the increase of cold rolling reduction ratio, volume fraction of martensite is gradually increased, and the steel＇s tensile strength is reached 910 MPa, yield strength and initial stiffness index n value and plastic strain ratio r value are changed little, elongation rate is reached above 14%.

关 键 词：冷轧压下率 热镀锌双相钢 组织性能 

分 类 号：TG335.12[金属学及工艺—金属压力加工] TG142.1[一般工业技术—材料科学与工程]