Atom probe tomography of secondary γ′ precipitation in a single crystal Ni-based superalloy after isothermal aging at 1100 °c

Abstract : Secondary γ′ precipitation in a commercial single crystal Ni-based superalloy after the 1100 °C isothermal aging has been investigated by atom probe tomography. After the isothermal aging for 300 s, 1800 s and 3600 s, a bimodal size distribution of larger primary γ′ precipitates and numerous smaller secondary γ′ precipitates was obtained. It is proposed that the secondary γ′ precipitated via a non-classical nucleation mode. The coarsening of secondary γ′ precipitates well obeys the classical LSW theory.
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Contributeur : Magalie Prudon <>
Soumis le : jeudi 10 juillet 2014 - 16:16:19
Dernière modification le : vendredi 11 octobre 2019 - 15:29:50

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X.P. Tan, Dominique Mangelinck, C. Perrin-Pellegrino, Luc Rougier, Charles-André Gandin, et al.. Atom probe tomography of secondary γ′ precipitation in a single crystal Ni-based superalloy after isothermal aging at 1100 °c. Journal of Alloys and Compounds, Elsevier, 2014, 611, pp.389-394. ⟨10.1016/j.jallcom.2014.05.132⟩. ⟨hal-01022688⟩

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