PROPERTY-BALANCED NICKEL-BASE SUPERALLOYS FOR PRODUCING SINGLE CRYSTAL ARTICLES

IMPROVED AND PROPERTY-BALANCED NICKEL-BASE SUPERALLOYS FOR PRODUCING SINGLE CRYSTAL ARTICLES The present invention is directed to the achievement of increased gas turbine engine efficiencies through futher improvements in nickel-base superalloys used to make parts and components for gas turbine engi...

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Bibliographische Detailangaben
Hauptverfasser:	WUKUSICK, CARL S, BUCHAKJIAN, LEO JR
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE ALLOYS APPARATUS THEREFOR CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMISTRY CRYSTAL GROWTH FERROUS OR NON-FERROUS ALLOYS METALLURGY PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE REFINING BY ZONE-MELTING OF MATERIAL SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE SINGLE-CRYSTAL-GROWTH TREATMENT OF ALLOYS OR NON-FERROUS METALS UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL
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Beschreibung
Zusammenfassung:	IMPROVED AND PROPERTY-BALANCED NICKEL-BASE SUPERALLOYS FOR PRODUCING SINGLE CRYSTAL ARTICLES The present invention is directed to the achievement of increased gas turbine engine efficiencies through futher improvements in nickel-base superalloys used to make parts and components for gas turbine engines. The present invention comprises nickel-base superalloys for producing single crystal articles having a significant increase in temperature capability, based on stress rupture strength and low and high cycle fatigue proprieties over single crystal articles made from current production nickel-base superalloys. Further, because of their superior resistance to degradation by cyclic oxidation, and their resistance to hot corrosion, the superalloys of this invention possess a balance in mechanical and environmental properties which is unique and has not heretofore been obtained.