Patents by Inventor Cristelle Pareige

Cristelle Pareige has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Austenitic alloy with high aluminum content and associated design process
    Patent number: 11408057
    Abstract: 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° C. and 1200° 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).
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: August 9, 2022
    Assignees: Manoir Pitres, Université de Rouen Normandie, Centre National de la Recherche Scientifique, Institut National des Sciences Appliquées Rouen Normandie
    Inventors: Mathieu Couvrat, Antoine Facco, Cristelle Pareige
  • AUSTENITIC ALLOY WITH HIGH ALUMINUM CONTENT AND ASSOCIATED DESIGN PROCESS
    Publication number: 20190376164
    Abstract: 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° C. and 1200° 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).
    Type: Application
    Filed: June 7, 2019
    Publication date: December 12, 2019
    Applicants: Manoir Pitres, Institut National des Sciences Appliquées Rouen Normandie, Université de Rouen Normandie, Centre National de la Recherche Scientifique, Institut National des Sciences Appliquées Rouen Normandie
    Inventors: Mathieu Couvrat, Antoine Facco, Cristelle Pareige