Mechanical properties and microstructure of SS 316 L created by WAAM based on GMAW

In this study, the Metal Arc Gas Welding (GMAW) process was used to develop Wire Arc Additive Manufacturing (WAAM) of austenitic Stainless Steel 316 L. The WAAM processed SS 316 L was fine shaped with no imperfections and solidification cracks were observed between the two layers. Microstructural characteristics demonstrated an abrupt transition at the contact with a terminating dendritic structure. EDS analysis verified that the components near the interface were well dissolved and that there was no significant variation in composition. The microstructures are mainly austenitic with a low fraction of ferrite in SS 316 L layers. The ultimate tensile strength (UTS), yield strength (YS), and wear rate of SS 316 L are calculated. In this scenario, WAAM's ability to produce SS 316 L with desired properties is useful and WAAM is a viable option for fabrication using traditional manufacturing techniques. [Display omitted]