Effects of Processing Parameters on Wire Arc Additive Manufactured Inconel® 718

The wire arc additive manufacturing (WAAM) process has demonstrated the potential to produce large parts with enhanced strength properties. This process is cost-efficient though challenging. In this research, the WAAM process was used to produce Inconel 718 parts. An investigation of the process parameters' impact on the mechanical properties and geometric characterization of the parts was conducted. In addition, the microstructure was evaluated to analyze the solid-state phase evolution and intermetallics formation. The results showed that the size of intermetallics was different in the inner-layer and inter-layer regions of the WAAM part. The overall properties of the parts with diverse parameters indicated a small range variation. The WAAM material showed a lower strength in the layer direction than in the build direction due to grain growth orientation.