ATI Titan 23TM a new low distortion β titanium alloy for additive manufacturing

The high specific strength of titanium and its alloys makes these materials critical for aerospace applications. The advent of additive manufacturing (AM) enables the production of new designs that were previously unattainable. Most AM has adopted Ti-6Al-4V due to the large material property data sets, accessibility, and proven manufacturability. However, Ti-6Al-4V is limited in AM production due to the evolution of high residual stresses that result in part distortion and restricting the design window. The use of highly beta stabilized alloys that print and stay in a fully beta condition result in lower residual stress and part distortion. ATI’s novel Titan 23^TM is a newly developed high strength β-Ti alloy that enables printing of large format parts with negligible distortion relative to Ti-6Al-4V. Titan 23^TM demonstrates an improved combination of properties that enable wider applications of additively manufactured titanium parts. This work provides a direct comparison of ATI Titan 23^TM vs ATI 6-4^TM materials produced via laser powder bed fusion and the resulting microstructures, mechanical properties, and residual stresses developed during printing.