Nickel-based superalloy, single-crystal blade and turbomachine

US11268170B2 · kind B2 · utility

Assignees

• SAFRAN · FR
• OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AÉROSPATIALES · FR

Inventors

• Jérémy RAME · Moissy-Cramayel, FR
• Virginie Jaquet · Moissy-Cramayel, FR
• Joël Delautre · Moissy-Cramayel, FR
• Jean-Yves Guedou · Moissy-Cramayel, FR
• Pierre Caron · Les Ulis, FR
• Odile Lavigne · Paris, FR
• Didier Locq · Le Plessis-Robinson, FR
• Mikael Perrut · Issy-les-Moulineaux, FR

Key dates

• Filing date: Nov 14, 2018
• Grant date: Mar 8, 2022
• Expiry date: Nov 14, 2038

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01D5/288
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A nickel-based superalloy comprises, in percentages by mass, 4.0 to 5.5% rhenium, 3.5 to 12.5% cobalt, 0.30 to 1.50% molybdenum, 3.5 to 5.5% chromium, 3.5 to 5.5% tungsten, 4.5 to 6.0% aluminum, 0.35 to 1.50% titanium, 8.0 to 10.5% tantalum, 0.15 to 0.30% hafnium, 0.05 to 0.15% silicon, the balance being nickel and unavoidable impurities. A single-crystal blade comprises such an alloy and a turbomachine comprising such a blade.