Weld metal hydrogen-assisted cracking in thick steel plate weldments

被引：17

作者：

Lee, H. W. ^{[1
]}

机构：

[1] Hanjin Heavy Ind, Res Ctr, Pusan 600814, South Korea

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2007年 / 445卷

关键词：

cold crack; residual stress; diffusible hydrogen content; preheating; interpass temperature;

D O I：

10.1016/j.msea.2006.09.046

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The transverse crack, a type of cold crack, occurs perpendicular to the welding direction. From experience, preheating and interpass temperature are important factors in cold crack occurrence. Transverse cracks were detected in the specimen welded with preheating and interpass temperatures below 30 degrees C, but cracks were not detected for the specimen welded with preheat and interpass temperatures of 100-120 degrees C. Hardness values of preheating and interpass temperatures below 30 degrees C were higher than preheating and interpass temperatures below 100-120 degrees C in deposited weld metal. The residual stress values for the specimen welded with a preheating and interpass temperature below 30 degrees C were higher than the specimen welded with a preheating and interpass temperature at 100-120 degrees C. The result of weld metal impact test shows higher impact values for the weld condition with preheating and interpass temperature at 100-120 degrees C, compared to the specimen welded with a preheating and interpass temperature below 30 degrees C. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：328 / 335

页数：8

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