800MPa级冷轧双相钢的组织与性能  

Microstructures and Properties of Cold Rolled DP780 Dual Phase Steel

作　　者：赵征志[1] 徐刚[1] 金光灿[1] 张增良[1] 赵爱民[1] 刘光明[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,北京100041

出　　处：《重庆工学院学报（自然科学版）》2008年第6期28-30,69,共4页Journal of Chongqing Institute of Technology

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

摘　　要：在实验室试制了800MPa级C-Si-Mn系冷轧双相钢，研究了双相钢的处理工艺，并对所研究钢板进行了力学性能测试和显微组织分析．研究结果表明，随着退火温度的增加，屈服强度和抗拉强度呈逐渐增加的趋势，当退火温度在740～760℃时，增加不太明显；温度高于760℃以后，屈服强度和抗拉强度均有较大幅度的增加；当退火温度达800℃时，屈服强度为490MPa，抗拉强度达到955MPa，延伸率为18．0％．The 800MPa grade dual phase steels are piloted based on C-Si-Mn alloy system in laboratory. Heat treatment techniques for dual phase steel are studied, and mechanical property test and microstructure analysis are conducted for the subject steel plate. The resuhs show that, both yield strength and tensile strength increase with annealing temperature increase. From 740℃ to 760℃, the trend is unobvious, when annealing at 800℃, yield strength of steel is 490MPa, tensile strength reaches 955MPa, elongation is 18.0%.

关 键 词：双相钢 连续退火 组织 力学性能 

分 类 号：TG142.1[一般工业技术—材料科学与工程]