CREEP, STRESS RUPTURE AND HOLD-TIME FATIGUE CRACK RESISTANT ALLOYS

CREEP, STRESS RUPTURE AND HOLD-TIME FATIGUE CRACK RESISTANT ALLOYS

Improved, creep-stress rupture and hold-time fatigue 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 rim sections of dual alloy turbine disks for advanc...

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Bibliographische Detailangaben
Hauptverfasser: CHANG, KEH-MINN, WESSELS, JEFFREY F, KRUEGER, DANIEL D
Format: Patent
Sprache:eng
Schlagworte:
ALLOYS
CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:Improved, creep-stress rupture and hold-time fatigue 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 rim sections of dual alloy turbine disks for advanced turbine engines and are capable of operation at temperatures up to about 1500F. The alloys contains (wt %) The alloys are solution treated above the gamma prime solvus temperature, followed by cooling at a rate suitable to prevent cracking and finally aged.