Isothermal forging of nickel-base superalloys in air

Details Isothermal forging of nickel-base superalloys in air Isothermal forging of nickel-base superalloys in air

2005-06-21

2005-06-21

Sheehan, John P. (Department: 1742)

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

C148S676000

Reexamination Certificate

active

06908519

ABSTRACT:
A superalloy made of a forging nickel-base superalloy such as Rene™ 88DT or ME3 is forged in a forging press having forging dies made of a die nickel-base superalloy. The forging is accomplished by heating to a forging temperature of from about 1700° F. to about 1850° F., and forging at that forging temperature and at a nominal strain rate. The die nickel-base superalloy is selected to have a creep strength of not less than a flow stress of the forging nickel-base superalloy at the forging temperature and strain rate.

REFERENCES:
patent: 3660177 (1972-05-01), Brown et al.
patent: 3802938 (1974-04-01), Collins et al.
patent: 4740354 (1988-04-01), Watanabe et al.
patent: 5120373 (1992-06-01), Miller et al.
patent: 5556484 (1996-09-01), Blankenship
patent: 5649280 (1997-07-01), Henry et al.
patent: 2004/0084118 (2004-05-01), Raymond et al.
patent: 1 253 861 (1971-11-01), None
Metals Handbook (10thEdition) vol. 1, Properties and Selection: Irons, Steels, and High Performance Alloys, 1990, pp. 950, 951, 970 and 982.
Huron E. et al, “Control of Grain Size Via Forging Strain Rate Limits for R′88DT”, Superalloys Proceedings International Symposium Superalloys, vol. 9, pp. 49-58 (XP009019521).
Gabb, Timothy P. and O'Connor, Kenneth, “High Temperature, Slow Strain Rate Forging of Advanced Disk Alloy ME3”, National Aeronautics and Space Administration, Aug. 2001, NASA/TM—2001-210901 (XP-01155723).

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