Ti based alloys for aerospace and biomedical applications fabricated through wire + arc additive manufacturing (WAAM)

Abstract

Wire + arc additive manufacturing (WAAM) gives maximum deposition rate as well as it shows a potential to fabricate a large component at lowest cost among all the other AM method. Titanium alloys has high static, and fatigue strength, low density, excellent fracture toughness, improved specific strength, also shows excellent corrosion and oxidation resistance. Due to these mentioned properties, Ti alloys is a suitable candidate for aerospace, medical implant, and chemical industry. However, there are many challenges are observed during the manufacturing of Ti alloys component through conventional manufacturing methods gives buy-to-fly ratio is high and complex geometries constrained. WAAM is most economical method for the fabrication of which has large in size with complex geometry parts of Ti alloys. This article confers about WAAM technique, different WAAM approaches, WAAM system used for Ti alloys fabrication, thermal and mechanical properties, and post-processing on WAAM Ti alloys, evolved microstructure, mechanical properties applied in aerospace and biomedical applications its associated challenges.