Fine grain titanium forgings and a method for their production

Details Fine grain titanium forgings and a method for their production Fine grain titanium forgings and a method for their production

1989-10-23

1991-06-25

Roy, Upendra

Alloys or metallic compositions

Titanium base

148 115F, 148 127B, 148133, C22F 118

Patent

active

050265202

ABSTRACT:
Fine grain titanium forgings and to a process for refining the grain size of .alpha. and .alpha.-.beta. titanium alloys through forging and recrystallization above the alloy's .beta.-transus temperature. Specifically, the method employs an isothermal press in which a billet heated above the alloy's .beta.-transus temperature, forged to produce an elongated, flattened grain structure, is held above the alloy's .beta.-transus temperature for a predetermined time to allow fine grains to nucleate and grow through recrystallization, and then is quenched to arrest grain growth and to establish a fine grained titanium alloy. A second forging step may be employed to attain an aspect ratio of the grains. The fine grained titanium forgings made by this process have a maximum prior .beta.-grain size of 0.5 mm throughout the workpiece.

REFERENCES:
patent: 3313138 (1967-04-01), Spring et al.
patent: 3470034 (1969-09-01), Kastanek et al.
patent: 3489617 (1970-01-01), Wuerfel
patent: 3635068 (1972-01-01), Watmough et al.
patent: 3686041 (1972-08-01), Lee
patent: 4098623 (1978-07-01), Ibaraki et al.
patent: 4675055 (1987-06-01), Ouchi et al.
patent: 4799975 (1989-01-01), Ouchi et al.
patent: 4854977 (1989-08-01), Alheritiere et al.
patent: 4878966 (1989-11-01), Alheritiere et al.

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