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About the possibility of grain boundary engineering via hot-working in a nickel-base superalloy

Nadia Souaï 1 Nathalie Bozzolo 1 Loic Nazé 2 Yvan Chastel 1 Roland E. Logé 1
1 CEMEF - Centre de Mise en Forme des Matériaux
2 MAT - Centre des Matériaux
Abstract : Microstructures, and especially grain boundary populations, are characterized in a γ/γ′ nickel-base superalloy submitted to various thermomechanical treatments involving hot deformation and subsequent supersolvus annealing. The resulting microstructures consist of equiaxed grains, including twins. Both the grain size and the amount of twin boundaries are dependent on the processing parameters, which demonstrates that grain boundary engineering is applicable to those materials. The mechanisms involved are discussed, taking into account the hot-working conditions.
Keywords : Nickel-base superalloy Grain boundary engineering Hot-working Annealing twins
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https://hal-mines-paristech.archives-ouvertes.fr/hal-00481433
Contributor : Bibliothèque Umr7633 <>
Submitted on : Thursday, May 6, 2010 - 4:15:40 PM
Last modification on : Thursday, September 24, 2020 - 6:30:07 PM

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Nadia Souaï, Nathalie Bozzolo, Loic Nazé, Yvan Chastel, Roland E. Logé. About the possibility of grain boundary engineering via hot-working in a nickel-base superalloy. Scripta Materialia, Elsevier, 2010, 62, pp.Pages 851-854. ⟨10.1016/j.scriptamat.2010.02.019⟩. ⟨hal-00481433⟩

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