1000MPa级冷轧热镀锌双相钢的研发  

Development of 1000MPa Cold Rolling Hot Dip Galvanized Dual Phase Steel

作　　者：金光灿[1] 赵爱民[1] 赵征志[1] 牛枫[1] 刘利[2] 

机构地区：[1]北京科技大学冶金工程研究院,北京100083 [2]首钢技术研究院,北京100039

出　　处：《轧钢》2010年第1期28-31,共4页Steel Rolling

基　　金："十一五"国家科技支撑计划(2006BAE03A06);北京市科技计划(D07010300700701)

摘　　要：介绍了实验室内开发的1000MPa级冷轧热镀锌双相钢的化学成分、热镀锌退火工艺及其室温组织和力学性能。实验表明,实验用钢的Ac_1、Ac_3、Ms点分别为725、850、390℃,经退火温度为820℃、保温时间为80s的热镀锌退火后,室温组织为典型的铁素体+马氏体组织,抗拉强度可达1014MPa,伸长率达13.7%。1000MPa grade cold rolling hot dip galvanized dual phase steels were exploited in laboratory.The chemical composition,hot dip galvanizing and annealing processes,microstructures and properties of this steel were introduced.The experimental results indicated that the temperatures of Ac_1,Ac_3 and Ms are 725℃, 850℃and 390℃respectively.After hot dip galvanized annealing process,which annealing temperatures and soaking time are 820℃and 80s,the tensile strength and elongation of hot dip galvanized dual phase steel could reach 1014MPa and 13.17%respectively.Typical ferrite and martensite structure can be observed by SEM at room temperature.

关 键 词：冷轧热镀锌双相钢 CCT曲线 显微组织 力学性能 

分 类 号：TG335.12[金属学及工艺—金属压力加工]