Influence of the microstructure texture of nickel base and cobalt base cast superalloys on their oxdation behaviour at high temperature

Influence de la texture microstructurale de superalliages de fonderie à base de nickel et à base de cobalt sur leur comportement en oxydation à haute température

Patrice Berthod (1) , Steven Raude (1) , Aurélie Chiaravalle (1) , Anne-Sophie Renck (1) , Christophe Rapin (1) , Renaud Podor (1)

1 LCSM - Laboratoire de chimie du solide minéral

The high temperature oxidation behaviour of cast superalloys strengthened by carbides has been studied as a function of their grain fineness and their dendritic orientation near the surface. These microstructural features have both a significant influence on the oxidation kinetics. The effect depends on the nature of the base metal of the superalloy, on the overall chemical composition or on the types of carbides.

Domaines: Matériaux

Patrice Berthod, Steven Raude, Aurélie Chiaravalle, Anne-Sophie Renck, Christophe Rapin, et al.. Influence of the microstructure texture of nickel base and cobalt base cast superalloys on their oxdation behaviour at high temperature. Revue de Métallurgie, 2004, 101 (12), pp.1031-1042. ⟨10.1051/metal:2004109⟩. ⟨hal-02108983⟩