Societe Nationale D'etude Et De Construction De Moteurs D'aviation

Office National D'etudes Et De Recherches Aerospatiales (onera)

Association Pour La Recherche Et Le Developpement Des Methodes Et

Tecphy

Bernard Paintendre

Andre M Walder

James Henry Davidson

Michel Marty

Christian A Ducrocq

Didier P Lestrat

Superalloy with a nickel base matrix having good mechanical properties when ot in respect of tensile strength, creep resistance, low cycle fatigue and resistance to crack-propagation of which the composition in percentages by weight is as follows: Cr 11 to 13; Co 8 to 17; Mo 6 to 8; Nb less than or equal to 1.5; Ti 4 to 5; Al 4 to 5; Hf less than or equal to 1; C, B, Zr each less than or equal to 500 ppm; Ni remainder to 100. The alloy can be manufactured advantageously by powder metallurgy techniques and used in the manufacture of turbo machine disks.

Superalloy compositions with a nickel base

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La Celle Saint Cloud, France

Bernard Paintendre