Effect of ER70s filler metal on mechanical properties and corrosion behaviour of low carbon steel produced by gas metal arc welding

Mamat, Mohd Fauzi and Mohd Syukor, Siti Nadirah and Mohd Bokhadi, Mohd Faiz and Ab. Majid, Rohah and Paijan, Lailatul Harina and Ali, Mohd Basri and Abu Bakar, Mohd Hadzley and Rosley, Mohd Idain Fahmy (2024) Effect of ER70s filler metal on mechanical properties and corrosion behaviour of low carbon steel produced by gas metal arc welding. International Journal of Nanoelectronics and Materials, 17 (SI). pp. 179-187. ISSN 1985-5761

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Abstract

The Gas Metal Arc Welding (GMAW) process is leading the way in arc welding process growth because it is more efficient, economical, and of high quality. The effects of ER70s fillermetal on mechanical properties and corrosion behaviour in low carbon steel with a base metal thickness of 12 mm are investigated in this study using robotic gas metal arc welding (GMAW). After the welding process, the quality, microstructure, and micro-hardness of each specimen were measured and the effect was studied. The immersion test was studied using weight loss and corrosion rate measurements for 1, 2, 4, 6, and 8 weeks in the absence and presence of 3.5wt.% NaCl. As a result, the microstructure displayed the different grain boundaries of each parameter that affected the welding parameters. Scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) are used to characterise the surface morphologyand pitting areas on the welded substrate. The corrosion rate of the welded sample immersed in 3.5wt.% medium was higher than in the absence of NaCl. The SEM results revealed that NaCl played an aggressive role in inducing the corrosion process and producing significant pits on the welded joint, particularly in the HAZ area. This research may provide a significant understanding of how the welding process, filler metal, and low carbon steel metal caused corrosion behaviour in the marine environment, particularly for oil and gas applications.

Item Type:	Article
Uncontrolled Keywords:	Welded joint, Micro hardness, Heat-affected zone, Corrosion rate
Divisions:	Faculty Of Industrial And Manufacturing Technology And Engineering
Depositing User:	Norfaradilla Idayu Ab. Ghafar
Date Deposited:	14 Mar 2025 16:31
Last Modified:	14 Mar 2025 16:31
URI:	http://eprints.utem.edu.my/id/eprint/28536
Statistic Details:	View Download Statistic

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