TiN-Ca处理对EH36大线能量焊接钢HAZ组织韧性的影响  

Effect of TiN-Ca Treatment on Microstructure and Toughness of HAZ for EH36 High Heat Input Welded Steel

作　　者：吴亦泉 王万林[1] 

机构地区：[1]中南大学冶金与环境学院,长沙410083

出　　处：《热加工工艺》2014年第23期207-208,共2页Hot Working Technology

摘　　要：研究了TiN-Ca处理对EH36大线能量焊接热模拟热影响区(HAZ)组织及韧性的影响。试验结果表明,TiN-Ca处理使EH36中典型夹杂物从Al2O3转变为(Al,Ca)O-(Mn,Ca)S-TiN,HAZ组织从魏氏组织为主转变为针状铁素体为主,HAZ韧性大大提高,满足使用要求。The effects of TiN-Ca treatment on the microstructure and toughness of EH36 high input welded steel were studied. The results show that TiN-Ca treatment changes typical inclusion from A1203 to （Al,Ca）O- （Mn,Ca）S-TiN composite inclusion, and the dominant HAZ microstructure changes from Widmannstatten structure to acicular ferrite, which can result in obvious improvement in HAZ impact toughness.

关 键 词：TiN-Ca处理 EH36夹杂物 大线能量焊接 组织 韧性 

分 类 号：TG407[金属学及工艺—焊接]