Tailoring Strength and Toughness of a New High Strength α+β Titanium Alloy: ATI Titan 27(R)

ATI Titan 27® is an α+β alloy with superior strength, ductility, and workability compared to the legacy workhorse alloy Ti-6Al-4V. This alloy has a wider hot working range and can be produced in a variety of product forms: hot rolled or forged bar, billet, extrusion and plate, as well as cold-drawn or rolled bar, wire and sheet. The room temperature strength of ATI Titan 27® is 15% greater than that of Ti-6Al-4V. Additionally, less room-temperature load drop during stress relaxations tests indicates the potential of this alloy as a replacement for Ti-6Al-4V in applications sensitive to dwell fa­tigue. The improved strength and ductility of ATI Titan 27, with increased slip activation of non-close-packed planes, could enable future lightweighting and improved dwell fatigue resistance.