Gas Metal Arc Welding Modes in Wire Arc Additive Manufacturing of Ti-6Al-4V.

ABSTRACT: In wire arc additive manufacturing of Ti-alloy parts (Ti-WAAM) gas metal arc welding (GMAW) can be applied for complex parts printing. However, due to the specific properties of Ti, GMAW of Ti-alloys is complicated. In this work, three different types of metal transfer modes during Ti-WAAM were investigated: Cold Metal Transfer, controlled short circuiting metal transfer, and self-regulated metal transfer at a direct current with a negative electrode. Metal transfer modes were studied using captured waveform and high-speed video analysis. Using these modes, three walls were manufactured; the geometry preservation stability was estimated and compared using effective wall width calculation, the microstructure was analyzed using optical microscopy. Transfer process data showed that arc wander

SUBMITTER: Panchenko O 

PROVIDER: S-EPMC8125978 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature