Patent ID: 7008491

Claim:
A method for fabricating an article of a titanium-base alloy for a gas turbine application, comprising the steps of providing a starting ingot having a thickness of at least about 20 inches, wherein the starting ingot is made of a titanium-base Ti-6Al-4V alloy having a temperature-composition phase diagram with a beta-phase field and an alpha-beta phase field; thereafter first forging the starting ingot in the beta-phase field to form an in-process billet; thereafter second forging the in-process billet in the alpha-beta phase field; thereafter heating the in-process billet into the beta-phase field to recrystallize the in-process billet; and thereafter third forging the in-process billet, wherein the step of third forging includes a step of forging the in-process billet from a first forging thickness of not less than about 15 inches to a second forging thickness of not more than about 13 inches, at a third-forging temperature of from about 1600° F. to about 1700° F. to develop a fine alpha grain size of about 5 micrometers or less.