High strength fatigue crack-resistant alloy article

Details High strength fatigue crack-resistant alloy article High strength fatigue crack-resistant alloy article

1989-10-04

1992-01-14

Dean, R.

Metal treatment

Stock

Age or precipitation hardened or strengthened

148 127N, 148428, 420448, C22C 1905, C22F 110

Patent

active

050807340

ABSTRACT:
Improved, high strength, fatigue crack-resistant nickel-base alloys for use at elevated temperatures are disclosed. The alloys are suitable for use as turbine disks in gas turbine engines of the type used in jet engines, or for use as hub sections of dual alloy turbine disks for advanced turbine engines, maintaining stability at engine operating temperatures up to about 1500.degree. F. The alloy is characterized by a microstructure having an average grain size of from about 10 microns to 20 microns. Coarse and fine intragranular gamma prime particles are distributed throughout the grains, of sizes 0.15-0.2 microns and 15 nanometers, respectively. The grain boundaries are substantially free of gamma prime, but have carbides and borides. A method for achieving the desired properties in such turbine disks is also disclosed.

REFERENCES:
patent: Re29920 (1979-02-01), Baldwin
patent: 3046108 (1962-07-01), Eiselstein
patent: 3151981 (1964-10-01), Smith et al.
patent: 3457066 (1969-07-01), Pohlman et al.
patent: 4207098 (1980-06-01), Shaw
patent: 4318753 (1982-03-01), Anderson et al.
patent: 4765956 (1988-08-01), Smith et al.
patent: 4769087 (1988-09-01), Genereux
patent: 4820358 (1989-04-01), Chang

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