Method for refining the microstructure of beta processed ingot m

Details Method for refining the microstructure of beta processed ingot m Method for refining the microstructure of beta processed ingot m

1990-03-26

1991-07-16

Roy, Upendra

Metal treatment

Compositions

Heat treating

148 127B, 148407, 148421, 420420, C22F 118

Patent

active

050321897

ABSTRACT:
Near-alpha and alpha+beta titanium alloy components are produced by a process which comprises the steps of forging an alloy billet to a desired shape at a temperature at or above the beta-transus temperature of the alloy to provide a forged component, heat treating the forged component at a temperature approximately equal to the beta-transus temperature of the alloy, cooling the component at a rate in excess of air cooling to room temperature, annealing the component at a temperature in the approximate range of 10 to 20% below said beta-transus temperature for about 4 to 36 hours, and air cooling the component to room temperature.

REFERENCES:
patent: 4543132 (1985-09-01), Berczik et al.
patent: 4842652 (1989-06-01), Smith et al.
patent: 4854977 (1989-08-01), Alheritiere et al.
patent: 4902355 (1990-02-01), Jaffee et al.

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