A review on weldability of additive manufactured titanium alloys

The Additive manufacturing technologies familiarize many innovative and monetary gains when compared to conservative subtractive manufacturing methods in rapid prototyping (RP) and small production capacity. In other exceedingly industrialized fields including aerospace, automobile, and bio-medical industries, additive manufacturing has turned out to be a subject of high interest. Nowadays, Additive manufacturing (AM) of Titanium alloys has grown into an imperative field of study. The foremost prominence of Titanium alloys is excellent strength to weight ratio, high weathering resistance, and admirable characteristics involving high tensile strength and toughness with comparatively low electrical and thermal conductivity. The manufacturing of Titanium through AM technology is marginally expensive and durable as it enables to create freedom in design community to fabricate user defined and complex structures which is hard to produce through other conventional manufacturing methods. The Ti-6Al-4V alloy is popularly known as the "work horse" of titanium is comprehensively used in aerospace and biomedical industries. At present, several studies have focused on hybrid manufacturing and enhancing the mechanical properties of Ti-6Al-4V with additive manufacturing techniques. In this research work, a short review on additive manufacturing of Ti-6Al-4V alloys has been investigated to define its mechanical and metallurgical properties in both as-built and heat treated conditions. (C) 2019 Elsevier Ltd. All rights reserved.