New insights into the origin of fine equiaxed microstructures in additively manufactured Inconel 718 - Université de Lorraine Accéder directement au contenu
Article Dans Une Revue Scripta Materialia Année : 2021

New insights into the origin of fine equiaxed microstructures in additively manufactured Inconel 718

Julien Zollinger
Connectez-vous pour contacter l'auteur
S. Mathieu
Benoît Appolaire

Résumé

Fine equiaxed grain regions are frequently observed in additively manufactured Inconel 718 alloy. Based on a grain-to-grain orientation analysis using EBSD, many assemblies of neighboring grains in these regions have been found to display multiple-twins orientation relationships sharing common< 110> directions and exhibiting 5-fold symmetry. This is an experimental proof that the grain refinement observed in inconel 718 is due to Icosahedral Short-Range Order (ISRO) mediated nucleation mechanism. This is the first report of ISRO-mediated nucleation of fcc nickel which widens the perspectives on the microstructures control in additive manufacturing of Ni-based superalloys.
Fichier principal
Vignette du fichier
S1359646221000208.pdf (2.58 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03608596 , version 1 (13-02-2023)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

Citer

I. Cazic, Julien Zollinger, S. Mathieu, M. El Kandaoui, P. Plapper, et al.. New insights into the origin of fine equiaxed microstructures in additively manufactured Inconel 718. Scripta Materialia, 2021, 195, pp.113740. ⟨10.1016/j.scriptamat.2021.113740⟩. ⟨hal-03608596⟩
37 Consultations
25 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More