Effect of gas metal arc and electrode metal arc welding coatings on erosive wear behavior of St37 plain carbon steel

This study examined how various coating techniques affected the erosive wear behavior of St37 low-carbon steel. Surface of material was coated using GMAW and EMAW hardening techniques. To compare the erosive wear properties of the samples, slurry erosion wear experiments were conducted. Also, erosive wear resistance of different coatings was examined at various impact velocities (1.5–4.5 m/s) and angles (15°–45°). Microstructural analysis was done on the wear mechanisms discovered using scanning electron microscopy. After experiments, mass loss and surface roughness of the samples were measured after the experiments. The effects of impact angle, impact velocity, and coating parameters on erosive wear behavior were evaluated by examining mass loss, surface roughness, and microstructures. Findings showed that the most important factor in the erosive wear process is the impact velocity, and that mass loss increased at least threefold when the impact velocity was increased to 4.5 m/s. The GMAW-coated specimen outperformed the uncoated St37 in terms of mass loss (28.84% less) even under the most demanding conditions. However, according to surface inspections, the coated specimens exhibited brittle behavior under high-energy impacts. Consequently, the GMAW-coated St37 specimen was determined to be the most efficient solution in terms of service life.