冷却工艺对高强度热轧双相钢组织与力学性能的影响  

Effect of Cooling Process on Microstructure and Mechanical Properties of Hot-Rolled High Strength Dual Phase Steel

作　　者：刘斌[1,2] 王志刚[1] 王孟 梁文[2] 吴润[1] 

机构地区：[1]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北武汉430081 [2]武钢研究院,湖北武汉430080

出　　处：《热加工工艺》2017年第17期174-176,共3页Hot Working Technology

基　　金：湖北省自然科学基金资助项目(2014CFB799)

摘　　要：通过实验室控轧控冷实验,对C-Mn-Cr热轧双相钢在不同冷却工艺下的组织与性能进行了研究。结果表明,随着第一段水冷结束温度的升高,实验钢金相组织中马氏体体积分数逐渐增加,屈服强度呈下降趋势;随着第二段水冷结束温度的升高,实验钢金相组织无明显差异,力学性能没有明显差别。The microstructure and mechanical properties of hot rolled C-Mn-Cr dual-phase steel under different cooling processes were investigated by controlled rolling and controlled cooling experiments. The results show that with the increase of the first-stage water-cooling end temperature, the martensite volume fraction in the microstructure of the experimental steel increases gradually and the yield strength decreases; with increase of the second-stage water-cooling end temperature, there is no significant difference in the microstructure of the experimental steel, and there is no obvious difference in mechanical properties.

关 键 词：热轧双相钢 冷却工艺 显微组织 力学性能 

分 类 号：TG335.11[金属学及工艺—金属压力加工] TG142.2[一般工业技术—材料科学与工程]