Patent ID: 7449075

Claim:
A method for producing a titanium-alloy article, comprising the steps of providing a workpiece of an alpha-beta titanium alloy having a beta-transus temperature; thereafter mechanically working the workpiece at a mechanical-working temperature above the beta-transus temperature; thereafter solution heat treating the workpiece at a solution-heat-treatment temperature below the beta-transus temperature, and quenching the workpiece from the solution-heat-treatment temperature; thereafter precipitation heat treating the workpiece at a temperature of from about 1100° F. to about 1225° F.; thereafter utilizing the workpiece by machining the workpiece or using the workpiece in service; thereafter second solution heat treating the workpiece at a second solution-heat-treatment temperature of from about 175° F. below the beta-transus temperature to about 25° F. below the beta-transus temperature, and quenching the workpiece from the second solution-heat-treatment temperature; and thereafter overage heat treating the workpiece at an overage-heat-treatment temperature of from about 400° F. below the beta-transus temperature to about 275° F. below the beta-transus temperature, and cooling the workpiece from the overage-heat-treatment temperature.