Centre National De La Recherche Scientifique

Université De Rouen Normandie

Manoir Pitres

Institut National Des Sciences Appliquées Rouen Normandie

Institut National Des Sciences Appliquees De Rouen Normandie

Cristelle Pareige

Mathieu Couvrat

Antoine Facco

An austenitic alloy based on nickel, chromium and iron, and having a high aluminum content, intended for use at a given operating temperature (Ts) between 900&#xb0; C. and 1200&#xb0; C., the alloy comprising the following elements, in weight percent: chromium between 20% and 32%, nickel between 30% and 60%, aluminum between 3.5% and 6%, carbon between 0.4% and 0.7%, titanium between 0.05% and 0.3%, niobium and/or tantalum between 0.6% and 2%, an element, composed of at least one rare earth and/or hafnium, between 0.002% and 0.1%, silicon between 0 and 0.5%, manganese between 0 and 0.5%, tungsten between 0 and 2%, and iron as the balance of the elements in the alloy. The alloy has less than 1% by volume of an intermetallic B2-NiAl phase and less than 1% by volume of an alpha prime phase rich in chromium, after subjecting the alloy to an operating temperature (Ts).

Growing community of inventors

Rouen, France

Cristelle Pareige