用裂纹尖端张开位移法评价焊接接头韧性  

To Evaluate the Toughness of Welded Jointer with Crack Tip Open Displacement Method

作　　者：苗张木[1] 蒋军 王志坚 陶德馨[1] 李永信[1] 陈冰泉[1] 彭永春[3] 

机构地区：[1]武汉理工大学交通学院 [2]深圳赤湾胜宝旺工程有限公司 [3]中国船级社

出　　处：《焊管》2003年第6期17-21,61,共5页Welded Pipe and Tube

摘　　要：用夏比 ( charpy)冲击试验值来评定焊接接头的韧性 ,有一定的局限性 ,而用裂纹尖端张开位移 (简称 CTOD)试验方法能较准确地评价焊接接头的韧性。介绍了裂纹尖端张开位移的含义 ,CTOD试验所用的主要设备及试验过程。用 CTOD试验方法对导管架焊接接头的韧性进行了评定。试验结果表明 :用 CTOD试验评价焊接接头韧性 ,效果良好 ,CTOD试验还可以作为焊接工艺认可试验 。It is certain limitation to assess the toughness of welded jointers by Charp impact test value It can more exactly assess the toughness of welded jointers with CTOD test method.It is introduced the meanings of CTOD,the main equipment used by CTOD test and its test process.It assesses the toughness of welded jointer of conduit stand with CTOD test method.The test result indicates the effect is all right to use CTOD method to assess the welded jointer toughness.The CTOD test can regard as welding procedure approval test and also use for assess the good or bad of different welding procedures.

关 键 词：焊接接头 裂纹尖端张开位移 韧性 夏比冲击试验值 CTOD 评价 

分 类 号：TG407[金属学及工艺—焊接]