Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Reexamination Certificate
2004-06-28
2008-11-11
Sheehan, John P. (Department: 1793)
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
C148S421000
Reexamination Certificate
active
07449075
ABSTRACT:
A titanium-alloy article is produced by providing a workpiece of an alpha-beta titanium alloy having a beta-transus temperature, and thereafter mechanically working the workpiece at a mechanical-working temperature above the beta-transus temperature. The mechanically worked workpiece is solution heat treated at a solution-heat-treatment temperature of from about 175° F. below the beta-transus temperature to about 25° F. below the beta-transus temperature, quenched, overage heat treated 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 cooled from the overage-heat-treatment temperature.
REFERENCES:
patent: 2974076 (1961-03-01), Vordahl
patent: 3151003 (1964-09-01), Vordahl
patent: 3489617 (1970-01-01), Wuerfel
patent: 3649259 (1972-03-01), Heitman
patent: 3901743 (1975-08-01), Sprague et al.
patent: 4309226 (1982-01-01), Chen
patent: 4842652 (1989-06-01), Smith et al.
patent: 5795413 (1998-08-01), Gorman
patent: 6127044 (2000-10-01), Yamamoto et al.
patent: 6332935 (2001-12-01), Gorman et al.
patent: 6536110 (2003-03-01), Smith et al.
Davis et al., ASM Handbook, 1993, ASM International, vol. 2, 603-604 and 611-612.
Davis et al., ASM Handbook, 1995, ASM International, vol. 4, 916-918.
The ASM Handbook (Davis et al.), Specific Metals and Alloys, Oct. 31, 1993, vol. 2, p. 598.
The ASM Handbook (Davis et al.), Wrought Titanium and Titanium Alloys, Oct. 31, 1993, vol. 2, p. 619.
Broderick Thomas Froats
Lawless Bernard Harold
Pridemore Wesley Douglas
Sullivan Nancy Ann
Wayte Peter
General Electric Company
McNees Wallace & Nurick LLC
Roe Jessee R.
Sheehan John P.
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