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Communication Dans Un Congrès Année : 2019

Finite diffusion microsegregation model applied to multicomponent alloys

Virginie Jaquet
  • Fonction : Auteur
  • PersonId : 1196477
Ngadia Tahane Niane
  • Fonction : Auteur
  • PersonId : 1196474
Luc Rougier
  • Fonction : Auteur
Dominique Daloz
Julien Zollinger

Résumé

During casting, diffusion phenomena are often simplified by Lever-Rule or GulliverScheil hypotheses, thus simplifying chemical diffusion to extreme configurations. The present work proposes an extension of the Tong-Beckermann microsegregation model to multi-component alloys while considering finite diffusion in liquid and solid phases plus the effect of tip undercooling of the columnar front. The behaviour of this model is studied according the solidification conditions (growth velocity and thermal gradient) and comparison with microprobe measurements is proposed for a seven components nickel-base superalloy.

Domaines

Matériaux

Dates et versions

hal-04293921 , version 1 (19-11-2023)

Identifiants

Citer

Vincent Maguin, Gildas Guillemot, Virginie Jaquet, Ngadia Tahane Niane, Luc Rougier, et al.. Finite diffusion microsegregation model applied to multicomponent alloys. Joint 5th Int. Conf. on Advances in Solidification Processes (ICASP-5) & 5th Int. Symposium on Cutting Edge of Computer Simulation of Solidification, Casting and Refining (CSSCR-5), Jun 2019, Salzbourg, Austria. pp.012029, ⟨10.1088/1757-899X/529/1/012029⟩. ⟨hal-04293921⟩
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