ENGLISH
La vitrine de diffusion des publications et contributions des chercheurs de l'ÉTS
RECHERCHER

Influence of thermomechanical shrinkage on macrosegregation during solidification of a large-sized high-strength steel ingot

Téléchargements

Téléchargements par mois depuis la dernière année

Plus de statistiques...

Zhang, C., Shahriari, D., Loucif, A., Melkonyan, H. et Jahazi, M.. 2018. « Influence of thermomechanical shrinkage on macrosegregation during solidification of a large-sized high-strength steel ingot ». International Journal of Advanced Manufacturing Technology, vol. 99, nº 9-12. pp. 3035-3048.
Compte des citations dans Scopus : 12.

[thumbnail of Jahazi-M-2018-17432.pdf]
Prévisualisation
PDF
Jahazi-M-2018-17432.pdf - Version acceptée
Licence d'utilisation : Tous les droits réservés aux détenteurs du droit d'auteur.

Télécharger (1MB) | Prévisualisation

Résumé

Finite element modeling (FEM) validated by experimental work was used to simulate the influence of thermomechanical shrinkage on macrosegregation of alloying elements in a large-sized ingot of high-strength steel. The full algorithms of the filling and solidification process for thermohydraulic and thermomechanic analyses were developed and implemented in the 3D FEM code Thercast®. Material properties were determined by a combination of experimental works, thermodynamic software Thermo-Calc®, a database, and literature source. It was predicted that thermomechanical shrinkage decreased the temperature gradients, advanced the initiation of solidification, and reduced the solidification time. The above changes resulted in less severe segregation along the centerline, in the zone next to the ingot surface, in the upper section of the ingot, and in the hot-top. Thermomechanic model predictions were proved to agree better with experimental results than the thermohydraulic one. The obtained results were interpreted in the framework of the theories on diffusion and solidification of alloyed systems. These findings contribute to a better understanding of the impact of thermomechanical shrinkage in ingot cooling process. They could also be used in industry to improve the quality of large-sized ingot production and the productivity of high value-added steels or other alloys.

Type de document: Article publié dans une revue, révisé par les pairs
Professeur:
Professeur
Jahazi, Mohammad
Affiliation: Génie mécanique
Date de dépôt: 16 oct. 2018 19:43
Dernière modification: 13 avr. 2023 16:08
URI: https://espace2.etsmtl.ca/id/eprint/17432

Actions (Authentification requise)

Dernière vérification avant le dépôt Dernière vérification avant le dépôt