Manoir Industries, Inc.

Manoir Pitres

Manuel Roussel

Mathieu Couvrat

Antoine Facco

Mériem Abikchi

Justine Allo

Meriem Abikchi

Begona Gomez-Ferrer Herran

An austenitic alloy based on nickel and having a high chromium content, intended to be used at a given operating temperature between 900&#xb0; C. and 1150&#xb0; C., comprises the following elements by mass percentage: chromium between 40% and 45%; iron between 10% and 14%; carbon between 0.4% and 0.6%; titanium between 0.05% and 0.2%; niobium between 0.5% and 1.5%; at least one reactive element, selected from rare earths or hafnium, between 0.002% and 0.1%; silicon between 0% and 1%; manganese between 0% and 0.5%; nickel to balance the alloy elements. In addition, the alloy has a molar fraction of more than 0.1% of secondary carbo-nitrides rich in niobium and/or titanium, after the operating temperature has been applied thereto. The disclosure also relates to a method for designing such an alloy and to a method for validating such an alloy.

Nickel-based refractory alloy with high chromium content and associated design method

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Rouen, France

Manuel Roussel