ISSN 2360-7955
Abstract
The research examined how Electric Arc Welding (EAW), Gas Metal Arc Welding (GMAW) and Spot Welding affect the corrosion resistance of mild steel when exposed to 2 M hydrochloric acid (HCl) solution. The corrosion tests used gravimetric (weight-loss) and thermometric methods to measure corrosion rates on welded specimens. The researchers performed impact testing to evaluate both the mechanical properties and the structural stability of welds that underwent corrosion. The research showed that all welded joints showed corrosion in the acidic solution, but the degree of damage depended on the welding process used. The research demonstrates that Gas Metal Arc Welding (GMAW) produces the most suitable mild steel joints for acidic environments, providing excellent corrosion protection and durability.
Keywords: Mild steel, welding techniques, corrosion resistance, gas metal arc welding, weight loss, microstructure, hydrochloric acid.