Centre National De La Recherche Scientifique

Safran Aircraft Engines

Safran

Universite De La Rochelle

Christophe Philippe Audic

Virginie Jaquet

Sarah Hamadi

Fernando Pedraza Diaz

Annie Pasquet

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.

Superalloy turbomachine part with an optimized hafnium content

Growing community of inventors

MOISSY-CRAMAYEL, France

Christophe Philippe Audic