In Situ Characterization of Inconel 718 Post-Dynamic Recrystallization within a Scanning Electron Microscope

Abstract : Microstructure evolution within the post-dynamic regime following hot deformation was investigated in Inconel 718 samples with different dynamically recrystallized volume fractions and under conditions such that no δ-phase particles were present. In situ annealing treatments carried out to mimic post-dynamic conditions inside the Scanning Electron Microscope (SEM) chamber suggest the occurrence of both metadynamic and static recrystallization mechanisms. Static recrystallization was observed in addition to metadynamic recrystallization, only when the initial dynamically recrystallized volume fraction was very small. The initial volume fraction of dynamically recrystallized grains appears to be decisive for subsequent microstructural evolution mechanisms and kinetics. In addition, the formation of annealing twins is observed along with the growth of recrystallized grains, but then the twin density decreases as the material enters the capillarity-driven grain growth regime.
Type de document :
Article dans une revue
Metals, MDPI, 2017, 7 (11), pp.Article number 476. 〈10.3390/met7110476〉
Liste complète des métadonnées

Littérature citée [37 références]  Voir  Masquer  Télécharger

https://hal-mines-paristech.archives-ouvertes.fr/hal-01630159
Contributeur : Brigitte Hanot <>
Soumis le : mardi 7 novembre 2017 - 11:38:47
Dernière modification le : mardi 27 mars 2018 - 16:06:17

Fichier

metals-07-00476.pdf
Publication financée par une institution

Identifiants

Collections

Citation

Meriem Zouari, Roland E. Logé, Nathalie Bozzolo. In Situ Characterization of Inconel 718 Post-Dynamic Recrystallization within a Scanning Electron Microscope. Metals, MDPI, 2017, 7 (11), pp.Article number 476. 〈10.3390/met7110476〉. 〈hal-01630159〉

Partager

Métriques

Consultations de la notice

115

Téléchargements de fichiers

33