Kawasaki Heavy Industries (Japan)

Control of fatigue-critical defect size by pulsed current parameters in GTAW-based wire arc additive manufacturing of Ti-6Al-4V

Abstract Wire arc additive manufacturing (WAAM) can suffer from lack of fusion (LoF) and gas porosity, which degrade fatigue performance. Although pulsed arc current has been widely used for defect reduction in welding, its mechanistic role in controlling molten-pool dynamics and...