海洋平台用钢D36超大厚度焊接接头CTOD试验  

CTOD fracture toughness test for super-thick welded joints of D36 offshore platform steel

作　　者：王志坚 蒋军 王东坡[2] 邓彩艳[2] 

机构地区：[1]深圳赤湾胜宝旺工程有限公司,广东深圳518068 [2]天津大学材料科学与工程学院,天津300072

出　　处：《焊接学报》2007年第8期103-107,共5页Transactions of The China Welding Institution

摘　　要：依据英国标准BS7448断裂韧度试验标准(ISO/TC164/SC4-N400)和DNV-OS-C401,采用埋弧焊和CO2气体保护焊工艺对国产钢板板厚为80mm的海洋石油平台导管架对接接头试样进行了低温裂纹尖端张开位移(CTOD)试验。测试了零度下该工艺的焊缝和热影响区的CTOD断裂韧度,探讨了这种大厚板焊接接头在埋弧焊和CO2气体保护焊工艺下免除焊后热处理的可能性,为海洋平台施工建造提供科学依据。Based on BS7448 fracture toughness test experiment standard (ISO/TC164/SC4-N400) and DNV-OS-C401, crack tip opening displacement (CTOD) tests are carried out on 80 mm thick plates butt joints of offshore petroleum platform joined by the submerged-arc welding and CO2 gas shielded welding. The CTOD values of weld metal and the heat-affected zone are tested at 0 ℃. The possibility of avoiding post-weld heat treatment in thick welded joints is discussed using the submerged-arc welding and CO2 gas shielded welding. These work provide the scientific basis on the offshore platform construction.

关 键 词：焊接接头 裂纹尖端张开位移 断裂韧度 

分 类 号：TG115.28[金属学及工艺—物理冶金]