Patent ID: 8551264
Filing Date: 2013-10-08
Classification: C22C,C22F

Abstract:
1. A method of producing fine grain Ti-5Al-4V-0.6Mo-0.4Fe sheets through a hot rolling process comprising, a. forging Ti-5Al-4V-0.6Mo-0.4Fe slab to sheet bar, intermediate gage of plates; b. heating the sheet bar to a temperature between about 100° F. to about 250° F. higher than beta transus for about 15 to about 30 minutes followed by cooling; c. heating the sheet bar to a temperature between about 1450° F. to about 1500° F. then hot rolling to an intermediate gage; d. heating the intermediate gage to a temperature between about 1450° F. to about 1500° F. then hot rolling to a final gage; e. annealing the final gage to a temperature between about 1350° F. to about 1500° F. for about 30 min to about 1 hour followed by cooling; and f. grinding the annealed gage with a sheet grinder followed by pickling to remove oxides and alpha case formed during thermo-mechanical processing.