Superalloy based on nickel, monocrystalline blade and turbomachine

US11220727B2 · kind B2 · utility

Assignees

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

Inventors

• Jérémy RAME · Moissy-Cramayel, FR
• Philippe BELAYGUE · Moissy-Cramayel, FR
• Pierre Caron · Les Ulis, FR
• Joël Delautre · Moissy-Cramayel, FR
• Virginie Jaquet · Moissy-Cramayel, FR
• Odile Lavigne · Paris, FR

Key dates

• Filing date: Oct 24, 2017
• Grant date: Jan 11, 2022
• Expiry date: Oct 24, 2037

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01D5/284
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A nickel-based superalloy comprises in mass percent: 4.0% to 6.0% chromium; 0.4% to 0.8% molybdenum; 2.5% to 3.5% rhenium; 6.2% to 6.6% tungsten; 5.2% to 5.7% aluminum; 0.0 to 1.6% titanium; 6.0% to 9.9% tantalum; 0.0 to 0.7% hafnium; and 0.0 to 0.3% silicon; the balance being constituted by nickel and any impurities.A monocrystalline blade comprises such an alloy and a turbomachine including such a blade.