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Article Dans Une Revue Corrosion Science Année : 2024

Influence of microstructure on the oxidation behaviour of the Ni-based single crystal superalloy AM1 between 850 and 1050 °C in air

Résumé

The influence of the as-cast and fully heat-treated microstructures on the isothermal behaviour of the Ni-based single crystal superalloy AM1 was investigated at 850-1050 ◦C. It appears that the kinetics transition regime is a function of time, temperature and also of bulk microstructure. The various characterisation techniques allowed elucidating that the growth of a continuous inner layer of α-Al2O3 governs the oxidation mechanisms, irre- spective of the microstructure. Such layer is favoured for high oxidation temperatures, long exposure times and high γ’ precipitate surface fraction. However, the chemical segregation of the as-cast state is responsible for the growth of inhomogeneous oxide layers

Dates et versions

hal-04432313 , version 1 (01-02-2024)

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Angéline Martin, Jonathan Cormier, Jérémy Rame, Elodie Drouelle, Fernando Pedraza. Influence of microstructure on the oxidation behaviour of the Ni-based single crystal superalloy AM1 between 850 and 1050 °C in air. Corrosion Science, 2024, 229, pp.111872. ⟨10.1016/j.corsci.2024.111872⟩. ⟨hal-04432313⟩
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