Monokristalline Superlegierung auf Nickelbasis,insbesondere für Turbinenschaufeln von Raketentriebwerken, und Herstellungsverfahren

The nickel-based monocrystalline superalloy adapted especially for the manufacture of turbine blades of cryotechnical rocket-engine turbopumps, exhibits the following weight composition in %: Fe: 22 to 28 % Cr: 7 to 9 % Ti: 3 to 5 % Al: 3 to 5 % Nb: 0.5 to 2 % Mo: 2 to 4 % Si: 0 to 0.5 % Ni: remaind...

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Bibliographische Detailangaben
Hauptverfasser:	KHAN, TASADDUQ, F-78350 JOUY-EN-JOSAS, FR, CARON, PIERRE, F-91940 LES ULIS, FR, DE MONICAULT, JEAN-MICHEL, F-27720 CROISY S/EURE, FR, CORNU, DANIEL A., F-27200 VERNON, FR
Format:	Patent
Sprache:	ger
Schlagworte:	AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE ALLOYS APPARATUS THEREFOR 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:	The nickel-based monocrystalline superalloy adapted especially for the manufacture of turbine blades of cryotechnical rocket-engine turbopumps, exhibits the following weight composition in %: Fe: 22 to 28 % Cr: 7 to 9 % Ti: 3 to 5 % Al: 3 to 5 % Nb: 0.5 to 2 % Mo: 2 to 4 % Si: 0 to 0.5 % Ni: remainder to 100 %. The other elements being optionally present only in the form of impurities. The alloy exhibits in particular a good behaviour towards heat shocks and a low sensitivity to embrittlement by gaseous hydrogen.