Fatigue and Fracture of Titanium Aluminides

Abstract
Future tactical aircraft engine designs depend heavily on advanced materials technology to meet thrust-to-weight and durability goals. Several types of materials currently under development are candidates for use in these advanced engines, including intermetallic titanium aluminides. Titanium aluminide alloys offer low density, high specific strength, and elevated temperature capabilities. If the materials are used in major structural and rotating components, these properties could significantly increase-engine thrust-to-weight ratio. Monolithic titanium aluminides are currently being evaluated for static components where they offer strength and stiffness advantages at temperatures above conventional titanium alloy capability.

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