Evaluation of the forging of a carbon steel coated with 316L stainless steel alloy by arc thermal spray

Abstract

Surface coating by Arc Thermal Spray is used in industry to modify the surface of materials to improve mechanical, tribological, and corrosion properties. The objective of this work is to coat 1045 carbon steel with 316L stainless steel using Arc Thermal Spray followed by hot forging, aiming for the cladding (pressure welding) of the coating onto the base steel. Arc thermal spraying was performed on 1045 steel bars, applying two coating layers. Hot forging was carried out at a temperature of 1200°C. The specimens were characterized by metallography and microhardness. Through metallography, it was observed that cladding occurred between the coating and the base steel, resulting in a layer of approximately 0.25mm. The microhardness results corroborated the metallographic findings