海洋平台焊接接头大型CTOD低温试验  

Large Sized Crack Tip Opening Displacement(CTOD)Test for the Welded Joints in Offshore Platform

作　　者：杨新岐[1] 王东坡[1] 王文先[1] 阳代军[1] 李小魏 李磊[2] 曹军[2] 

机构地区：[1]天津大学材料科学与工程学院,天津300072 [2]海洋石油工程股份有限公司,天津300452

出　　处：《中国海洋平台》2003年第1期33-38,共6页China offshore Platform

摘　　要：依据英国BS7448断裂韧性试验标准,对焊接接头超大尺寸低温裂纹尖端张开位移(CTOD)试验测试技术进行了探讨,对采用手工焊(SAMW)与埋弧焊(SMW)工艺施焊的、板厚为63.5mm的海洋石油平台焊接接头试样进行了CTOD试验,分别测试了-18℃下两种工艺焊缝金属和热影响区的CTOD断裂韧性,对试验结果及试验中的有关技术问题进行了分析讨论。试验结果为评价这种板厚焊接接头的焊后热处理规范提供了依据。The measuring and testing technique of large sized crack tip opening displacement (CTOD)tests for welded joints used in the construction of offshore platform under low environmental temperature of -18 C were performed in accordance with the BS 7448 standard (part 2,1997).The CTOD tests on the weld metal and heat affected zone were conducted for the welded joints with a thickness of 63.5mm welded by SMAW and SAW technology respectively.The testing reasults and some technique problems during the test perocedure were discussed in detail.

关 键 词：海洋平台 焊接接头 大型CTOD 低温试验 大尺寸焊接接头 裂纹尖端张开位移 试验测试 

分 类 号：P75[天文地球—海洋科学] TG404[金属学及工艺—焊接]