Assessment of Fatigue Life Prediction on Gas Metal Arc Welded DMR249A Steel Joints for Ship Hull Structure

被引：0

作者：

P. Hariprasath

P. Sivaraj

V. Balasubramanian

Srinivas Pilli

K. Sridhar

机构：

[1] Annamalai University,Centre for Materials Joining and Research (CEMAJOR), Department of Manufacturing Engineering, Faculty of Engineering and Technology

[2] DRDO,Naval Materials Research Laboratory (NMRL)

来源：

Journal of Failure Analysis and Prevention | 2023年 / 23卷

关键词：

Fatigue life; S–N curve; IIW standard; Tensile strength; Microstructure; Fractography;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

This study aims to focus on fatigue life assessment on GMAW of DMR249A steel (UNS K12249). The fatigue test was carried out using five levels of yield strength and completely reversed stress cycle. The fatigue behavior of HSLA steel correlated with tensile, impact, hardness, and microstructural characteristics. The maximum recorded fatigue life of the GMAW and parent metal is about 355 and 394 MPa, respectively. The fatigue properties of GMAW joints are relatively lower due to internal residual stress, grain deformation, and microstructural changes. Although, the produced S–N curves of the DMR249A steel were compared to the conventional IIW FAT curve.

引用

页码：436 / 448

页数：12

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