Mechanical properties of wire arc additive manufactured carbon steel cylindrical component made by cold metal transferred arc welding process

Abstract

Abstract Wire arc additive manufacturing (WAAM) offers high-quality technology for producing large complex geometry structures in close proximity to near-net form, using cost-effective manufacturing resources, such as welding and wiring materials. In this study, the cold-metal-transfer-based WAAM system was utilized to manufacture the steel cylindrical component. The mechanical properties and microstructure analysis of the component were analyzed at two regions (bottom and top region) along the building direction. The results showed that the microstructure of the part differed from the bottom to the top region, resulting in a hardness difference between 169 and 181 (Hv0.5), and impact toughness varied from 72 to 80 J. There were also anisotropic features in the tensile properties: the yield strength and the ultimate tensile strength ranging from 401 to 457 MPa and between 492 and 543 MPa, respectively.