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Article Dans Une Revue Metallurgical and Materials Transactions A Année : 2014

Spinodal Decomposition Mechanism of γ′ Precipitation in a Single Crystal Ni-Based Superalloy

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Résumé

The precipitation of γ′ phase in a commercial single crystal Ni-based superalloy with different cooling rates has been investigated by atom probe tomography. Numerous irregular interconnected γ′ precipitates in the size range of ~30 to 50 nm were obtained even utilizing the fastest possible cooling rate. Diffuse γ/γ′ interface and far from equilibrium composition of γ′ phase were observed in the fast-cooled sample, suggesting that γ′ precipitation occurs via a spinodal decomposition at the very early stage.

Dates et versions

hal-01058164 , version 1 (26-08-2014)

Identifiants

Citer

X.P. Tan, Dominique Mangelinck, Carine Perrin-Pellegrino, Luc Rougier, Charles-André Gandin, et al.. Spinodal Decomposition Mechanism of γ′ Precipitation in a Single Crystal Ni-Based Superalloy. Metallurgical and Materials Transactions A, 2014, 45 (11), pp.4725-4730. ⟨10.1007/s11661-014-2506-8⟩. ⟨hal-01058164⟩
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