Superalloy turbomachine part with an optimized hafnium content

US12392256B2 · kind B2 · utility

Assignees

• SAFRAN AIRCRAFT ENGINES · FR
• SAFRAN · FR
• CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE · FR
• UNIVERSITE DE LA ROCHELLE · FR

Inventors

• Joël Delautre · Moissy-Cramayel, FR
• Christophe Philippe AUDIC · Moissy-Cramayel, FR
• Sarah Hamadi · Moissy-Cramayel, FR
• Virginie Jaquet · Moissy-Cramayel, FR
• Fernando Pedraza Diaz · La Rochelle, FR
• Annie Pasquet · Longjumeau, FR

Key dates

• Filing date: Feb 2, 2021
• Grant date: Aug 19, 2025
• Expiry date: Jun 26, 2042

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F05D2300/182
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A turbomachine part includes a nickel-based superalloy substrate including, in mass content, 5.0% to 8.0% cobalt, 6.5% to 10% chromium, 0.5% to 2.5% molybdenum, 5.0% to 9.0% tungsten, 6.0% to 9.0% tantalum, 4.5% to 5.8% aluminum, hafnium in a mass content between 500 ppm and 1100 ppm, and optionally including niobium in a mass content less than or equal to 1.5%, and optionally at least one of carbon, zirconium and boron each in a mass content less than or equal to 100 ppm, the remainder being composed of nickel and unavoidable impurities.