Strain induced abnormal grain growth in nickel base superalloys - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Materials Science Forum Année : 2013

Strain induced abnormal grain growth in nickel base superalloys

(1) , (1) , (1) , (1) , (1)
1

Résumé

Under certain circumstances abnormal grain growth occurs in Nickel base superalloys during thermomechanical forming. Second phase particles are involved in the phenomenon, since they obviously do not hinder the motion of some boundaries, but the key parameter is here the stored energy difference between adjacent grains. It induces an additional driving force for grain boundary migration that may be large enough to overcome the Zener pinning pressure. In addition, the abnormal grains have a high density of twins, which is likely due to the increased growth rate.
Fichier principal
Vignette du fichier
REx_GG2013_AGG_Superalloys_978-0-00001-291-3_1030_revised.pdf (1.24 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-00821807 , version 1 (13-05-2013)

Identifiants

Citer

Nathalie Bozzolo, Andrea Agnoli, Nadia Souai, Marc Bernacki, Roland E. Logé. Strain induced abnormal grain growth in nickel base superalloys. 5th International Conference on Recrystallization and Grain Growth, ReX and GG, May 2013, Sydney, Australia. pp.321-324, ⟨10.4028/www.scientific.net/MSF.753.321⟩. ⟨hal-00821807⟩
178 Consultations
1410 Téléchargements

Altmetric

Partager

Gmail Facebook Twitter LinkedIn More