Influence of weld size on fatigue crack growth characteristics of flux cored arc welded cruciform joints

被引：12

作者：

Balasubramanian, V ^{[1
]}

Guha, B ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Met Engn, Mech Testing Lab, Chennai 600036, India

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1999年 / 265卷 / 1-2期

关键词：

cruciform joint; fatigue crack growth; flux cored arc welding; LOP; weld size;

D O I：

10.1016/S0921-5093(99)00007-6

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The influence of weld size (L/T-p) on fatigue crack growth characteristics of flux cored are welded (FCAW) cruciform joints, containing lack of penetration (LOP) defect, has been studied. Quenched and tempered (Q&T) steel of ASTM 517 'F' grade has been used as the base material. Fatigue crack growth experiments were carried out in a vertical pulsar under constant amplitude loading (R = 0). Crack growth rates were found to be relatively lower in the larger welds fabricated by the multipass technique. The number of weld passes involved in the fabrication of joints is mainly attributed to the changes in microstructure of weld metals, which in turn caused the differences in fatigue crack growth characteristics. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：7 / 17

页数：11

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