Exploring scanning strategies for enhanced surface integrity in thin-walled nozzles

The use of additively manufactured conduits for aerospace applications is currently limited due to the lack of standardized procedures for their characterization under actual operating conditions and the negative impact of high process-related roughness on fluid dynamics. To address these issues, the effect of three scanning strategies on the mechanical performance and surface integrity of additively manufactured Inconel 718 thin-walled nozzles is investigated. The results showcase reductions in roughness of up to 50 % with variations in static strength lower than 1 %. Furthermore, the application of additively manufactured nozzles in realistic scenarios and the potential to outperform conventional manufacturing are demonstrated.