Temperature-based energy solver coupled with tabulated thermodynamic properties – Application to the prediction of macrosegregation in multicomponent alloys - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Computational Materials Science Année : 2015

Temperature-based energy solver coupled with tabulated thermodynamic properties – Application to the prediction of macrosegregation in multicomponent alloys

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

Résumé

We present a new algorithm for solving energy balance in phase change problems, particularly in solidification with macrosegregation. The algorithm is based on a nonlinear temperature evaluation using the average enthalpy which is provided by (i) tabulated phase transformation paths and (ii) tabulated phase properties. The compatibility of this method with tabulations using a thermodynamic database, allows simulating solidification at equilibrium with multiple phase transformations for binary and multicomponent alloys. The method has been validated and applied to three-dimensional cases with macrosegregation: a binary Sn–3 wt.% Pb alloy and a ternary Fe–2 wt.% C–30 wt.% Cr alloy. For the latter case, predictions include composition maps for C and Cr due to thermosolutal instability leading to freckle formation and the subsequent distributions of liquid, BCC, FCC, M7C3 and Cementite phases. Compared with a previously published enthalpy method, the temperature-based energy solver shows similar accuracy and faster computational time.
Fichier principal
Vignette du fichier
SaadGandinBellet_CMS2015.pdf (1.65 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01111022 , version 1 (09-01-2017)

Identifiants

Citer

Ali Saad, Charles-André Gandin, Michel Bellet. Temperature-based energy solver coupled with tabulated thermodynamic properties – Application to the prediction of macrosegregation in multicomponent alloys. Computational Materials Science, 2015, 99, pp.221-231. ⟨10.1016/j.commatsci.2014.12.009⟩. ⟨hal-01111022⟩
271 Consultations
260 Téléchargements

Altmetric

Partager

Gmail Facebook Twitter LinkedIn More