High Temperature Titanium Alloy Development for Aerospace Applications: ATI Titan 171™ Alloy

As aerospace and defense applications become increasingly demanding, the need for lightweight, strong, and temperature capable materials has become even more relevant. Modern jet engines rely on titanium alloys that exhibit relatively high elevated temperature strength, and emerging markets such as hypersonics have even more challenging requirements. ATI has undergone a focused effort to improve upon legacy titanium alloys to meet these needs, iterating off high-temperature capable alloys such as Ti-6Al-2Sn-4Zr-2Mo, Ti-5Al-2Sn-2Zr-4Mo-4Cr, and Ti-4Al-4Mo-2Sn. Specifically, a new beta-rich alloy, ATI Titan 171™ has demonstrated superior performance at temperatures up to 1000°F.This presentation will focus on the research and development of ATI Titan 171™, from lab scale trials to production scale heats: including forging, rolling and additive manufacturing; as well as an overview of material properties and microstructure.