低碳Mn-Si-Cr系F/B复相钢的焊接性  

Weldability of Low Carbon Mn-Si-Cr Ferritic/Bainitic Steel

作　　者：王振家[1] 潘勇琨[1] 方鸿生[1] 白炳哲[1] 杨志刚[1] 

机构地区：[1]清华大学机械工程系,北京100084

出　　处：《钢铁研究学报》2005年第2期43-47,共5页Journal of Iron and Steel Research

基　　金：国家"863"计划资助项目(2003AA331040)

摘　　要：对低碳Mn Si Cr系F/B复相热轧钢 JB800的焊接性进行了试验研究。试验结果表明,该钢具有焊接冷裂纹倾向低、可用大线能量焊接、焊后不宜进行消氢处理等特点,可用作高强度大焊接线能量用钢。The weldability of low-carbon Mn-Si-Cr ferritic/bainitic hot-rolled steel JB800 was tested. The results show that the steel has low cold cracking sensibility, and can be welded with high heat input. The heat treatment of 250 ℃×0 5 h after welding is not suitable. According to the results obtained, it is clear that the steel of low-carbon Mn-Si-Cr system with F/B (or M/B) duplex phases is a new high strength steel for high welding heat input.

关 键 词：F/B复相钢 焊接性能 大焊接线能量用钢 

分 类 号：TG406[金属学及工艺—焊接]