Investigation of heat treatment parameters effect on the microstructure and on the mechanical properties of a powder metallurgy nickel-base superalloy

Alice Dumont 1 Loic Nazé 1 Alain Köster 1 Luc Rémy 1 Jean Yves Guedou 2 Jean-Michel Franchet 2
1 MAT - Centre des Matériaux
2 SNECMA Villaroche [Moissy-Cramayel]
Abstract : The relationships between heat treatment parameters and microstructure, and between microstructure and mechanical properties were investigated in the SMO43 disc P/M superalloy. Various heat treatments were applied to this superalloy to determine the effect of the solution temperature on the grain size, and of the cooling path and aging temperature on the ' precipitates distribution. Microstructural features were characterised through the careful study of ' precipitation. Fatigue crack growth tests with dwell time were performed at high temperature for comparison of the mechanical properties of some selected microstructures.
Keywords : superalloy heat treatment microstructure mechanical properties fatigue crack growth
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Soumis le : mardi 6 août 2013 - 15:37:28
Dernière modification le : lundi 12 novembre 2018 - 10:55:47
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Alice Dumont, Loic Nazé, Alain Köster, Luc Rémy, Jean Yves Guedou, et al.. Investigation of heat treatment parameters effect on the microstructure and on the mechanical properties of a powder metallurgy nickel-base superalloy. 21st international conference on metallurgy and materials, May 2012, Brno, Czech Republic. 6 p. ⟨hal-00732325⟩

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