Mechanical Properties and Microstructural Evaluation of High Strength Titanium Alloy Upset Forgings

TIMET has manufactured upset forgings from a variety of titanium alloys including Ti-6Al-4V, 54M, 54M+, Ti550, and Ti5553. Room and elevated temperature tensile tests, fracture toughness, low cycle fatigue (LCF), and high cycle fatigue (HCF) properties were evaluated for pancakes of all alloys and heat treatment conditions. Fatigue crack growth rate, precision modulus, and other tests were also performed on selected forgings. Summaries of mechanical properties and microstructural observations will be presented.