Effect of welding processes on mechanical and microstructural characteristics of high strength low alloy naval grade steel joints

被引：137

作者：

Nathan, S. Ragu ^{[1
]}

Balasubramanian, V. ^{[2
]}

Malarvizhi, S. ^{[2
]}

Rao, A. G. ^{[3
]}

机构：

[1] Annamalai Univ, Dept Mfg Engn, Annamalainagar 608002, Tamil Nadu, India

[2] Annamalai Univ, Dept Mfg Engn, Ctr Mat Joining & Res CEMAJOR, Annamalainagar 608002, Tamil Nadu, India

[3] Naval Mat Res Lab, Bombay 421506, Maharashtra, India

来源：

DEFENCE TECHNOLOGY | 2015年 / 11卷 / 03期

关键词：

High strength low alloy steel; Friction stir welding; Shielded metal arc welding; Gas metal arc welding; Tensile properties; Impact toughness;

D O I：

10.1016/j.dt.2015.06.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Naval grade high strength low alloy (HSLA) steels can be easily welded by all types of fusion welding processes. However, fusion welding of these steels leads to the problems such as cold cracking, residual stress, distortion and fatigue damage. These problems can be eliminated by solid state welding process such as friction stir welding (FSW). In this investigation, a comparative evaluation of mechanical (tensile, impact, hardness) properties and microstructural features of shielded metal arc (SMA), gas metal arc (GMA) and friction stir welded (FSW) naval grade HSLA steel joints was carried out. It was found that the use of FSW process eliminated the problems related to fusion welding processes and also resulted in the superior mechanical properties compared to GMA and SMA welded joints. Copyright (C) 2015, China Ordnance Society. Production and hosting by Elsevier B.V. All rights reserved.

引用

页码：308 / 317

页数：10

共 28 条

[1] The role of microsegregation in centreline cold cracking of high strength low alloy steel weldments [J].