机构地区: 东北大学材料与冶金学院轧制技术及连轧自动化国家重点实验室
出 处: 《特殊钢》 2007年第3期10-12,共3页
摘 要: 研究了热轧后空冷(800-850℃→750℃)+水冷(750℃→300~180℃)的两段式和水冷(782℃→760℃)+空冷(760℃→713℃)+水冷(713℃→414℃)三段式冷却方式对双相钢(%:0.08C、1.02Mn、0.22Si、0.02Nb、0.01Ti)组织和机械性能的影响。结果表明,采用两段式冷却方式可得到铁素体+分散的板条马氏体组织,并使铁素体尺寸达5.5μm,钢的屈服强度为345~365 MPa,抗拉强度为565~575 MPa、屈强比为0.60~0.65,优于三段式冷却方式轧制的双相钢。 The effect of hot rolled plate air cooling (800 - 850 ℃ to 750 ℃ ) + water cooling (750 ℃ to 300 - 180 ℃ ) two stage cooling mode and water cooling (782 ℃ to 760 ℃ ) + air cooling (760 ℃ to 713 ℃ ) + water cooling (713 ℃ to 414 ℃ ) three stage cooling mode on structure and mechanical properties of dual steel 0. 08C, 1.02Mn, 0. 22Si, 0. 02Nb, 0. 01Ti has been studied. Results showed that 5.5 um ferrite + dispersed lath martensite structure could be got by two stage cooling mode, and yield strength of steel was 345 - 365 MPa, tensile strength 565 - 575 MPa, yield strength-tensile strength ratio 0. 60 -0. 65 which were better than that by three stage cooling mode.