Centre National De La Recherche Scientifique

Université De Poitiers

Safran Aircraft Engines

Safran

Ecole Nationale Superieure De Mecanique Aerotechnique

Ecole Nationale Superieure De Mecanique Et D'aerotechnique De Poitiers

Centre National De La Recherche Scientifique-cnrs

Ecole Nationale Superieure D'arts Et Metiers

Jonathan Cormier

Pierre Jean Sallot

Jérémy Rame

Sarah Hamadi

Joël Delautre

Edern Menou

Satoshi Utada

Patrick Villechaise

Lorena Mataveli Suave

Elodie Marthe Bernadette Drouelle

Sylvain Pierre Dubois

Véronique Brunet

The invention concerns a method for manufacturing an aircraft part, the part comprising a monocrystalline nickel-based superalloy substrate, the method consecutively implementing the steps of moulding the part at a moulding temperature greater than the melting temperature of the superalloy, and cooling the part, such that the monocrystalline superalloy has a γ phase and a γ phase, solution heat treatment of the part at a first temperature between the solves temperature of the γ' phase and the melting temperature of the superalloy, homogenising the crystalline structure or the part, cooling the part to ambient temperature, first tempering and second tempering.

Method for manufacturing a part made of a monocrystalline superalloy

The invention relates to a nickel-based superalloy comprising, in percentages by mass, 5.0 to 6.0% aluminum, 6.0 to 9.5% tantalum, 0 to 1.50% titanium, 8.0 to 10.0% cobalt, 6.0 to 7.0% chromium, 0.30 to 0.90% molybdenum, 5.5 to 6.5% tungsten, 0 to 2.50% rhenium, 0.05 to 0.15% hafnium, 0.70 to 4.30% platinum, 0 to 0.15% silicon, the remainder being nickel and unavoidable impurities. The invention also relates to a single-crystal blade comprising such an alloy and a turbomachine comprising such a blade.

Nickel-based superalloy, single-crystal blade and turbomachine

Growing community of inventors

Chasseneuil du Poitou, France

Jonathan Cormier