平整工艺对冷轧780MPa级双相钢力学性能的影响  

Influence of temper rolling on the mechnical properties of 780MPa cold rolled dual phase steel

作　　者：刘华赛[1] 邝霜[1] 常安[1] 滕华湘[1,2] 

机构地区：[1]首钢技术研究院,北京100043 [2]北京科技大学材料科学与工程学院,北京100083

出　　处：《中国冶金》2015年第6期13-16,共4页China Metallurgy

摘　　要：采用不同的平整工艺对连续退火780MPa级别的冷轧双相钢进行平整试验,研究了平整伸长率对连续退火780MPa级别双相钢力学性能的影响,并建立了平整伸长率与780MPa级别双相钢力学性能的函数关系模型。研究表明:随着平整伸长率的提高,780MPa级别双相钢的屈服强度提高,抗拉强度保持不变,同时均匀伸长率和总伸长率均有所下降。The tensile properties of 780 MPa grade cold-rolled continuous annealed dual phase steel were investigated under different temper rolling reductions.The function relationships between temper rolling reduction and the ten-sile properties were founded.The results indicate that with the increase of the temper rolling reduction,the yield strength of the steel increases simultaneously,while the ultimate tensile strength remains the same.In addition,the uniform elongation and total elongation of the steel decrease slightly.

关 键 词：平整工艺 连续退火 780MPa 双相钢 力学性能 

分 类 号：TG335[金属学及工艺—金属压力加工]