Aging response and uniformity in beta-titanium alloys

Details Aging response and uniformity in beta-titanium alloys Aging response and uniformity in beta-titanium alloys

1992-12-17

1994-10-25

Roy, Upendra

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148421, 420417, 420421, C22C 1400

Patent

active

053585860

ABSTRACT:
The invention relates to a process for improving the aging response and uniformity in a beta titanium alloy comprising the steps of:
(a) cold working said beta titanium alloy to at least about 5% so that a reasonable degree of recrystallization can be obtained during subsequent solution treatment;
(b) pre-aging said cold worked alloy at about 900.degree. to about 1300.degree. F. for a time in excess of about 5 minutes to obtain a pre-aged alloy;
(c) solution treating said pre-aged alloy at a time and temperature to achieve a reasonable degree of recrystallization of said pre-aged alloy above the beta transus; and
(d) aging said solution treated alloy at temperature and times to achieve a pre-aged, solution treated and aged beta titanium alloy substantially in a state of metallurgical equilibrium.

REFERENCES:
patent: 4799975 (1989-01-01), Ouchi et al.
patent: 4859415 (1989-08-01), Shida et al.
patent: 4889170 (1989-12-01), Mae et al.
patent: 5171375 (1992-12-01), Wakabayashi et al.

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