低合金高强度结构钢Q390ME焊接接头组织性能研究  

FABRICATION AND PROPERTIES OF Q390ME WELDED JOINT OF LOW ALLOY HIGH STRENGTH STRUCTURAL STEEL

作　　者：李娜[1] 赵良生[2] 石杰 姜烁[2] Li Na;Zhao Liangsheng;Shi Jie;Jiang Shuo(Anyang Iron and Steel Group Co.,Ltd)

机构地区：[1]安阳钢铁集团有限责任公司技术中心,河南安阳455004 [2]安阳钢铁集团有限责任公司

出　　处：《河南冶金》2021年第3期4-7,共4页Henan Metallurgy

摘　　要：利用焊接热模拟技术,通过设定不同的热输入量、不同的峰值温度,模拟低合金高强度钢板Q390M不同的焊接热影响区。结果表明焊接热输入量在15~25 kJ/cm时,回火区、不完全相变区、正火区、淬火区四个不同的热影响区低温性能均表现良好。采用CO_(2)气体保护焊、20 kJ/cm的焊接热输入量对35 mm的Q390M进行焊接,焊接接头性能优良,可满足E级钢的要求。By using welding heat simulation technology,different heat input and peak temperature are set to simulate the welding heat affected zone of Q390M low alloy high strength steel plate.The results show that at 15~25 kJ/cm,the low temperature performance of tempering zone,incomplete phase change zone,normalizing zone and quenching zone is good.The Q390M of 35 mm is welded by CO_(2)gas shielded welding and 20 kJ/cm welding heat input.The welding joint has excellent performance and can meet the requirements of grade E steel.

关 键 词：焊接热模拟 焊接 显微组织 力学性能 

分 类 号：TG457.11[金属学及工艺—焊接]