Chadha, K., Aranas, C. et Jahazi, M..
2021.
« Effect of double hit hot deformation on the evolution of dynamically transformed ferrite ».
Metals and Materials International, vol. 27, nº 11.
pp. 4307-4321.
Compte des citations dans Scopus : 1.
Prévisualisation |
PDF
Jahazi-M-2020-21271.pdf - Version acceptée Licence d'utilisation : Tous les droits réservés aux détenteurs du droit d'auteur. Télécharger (5MB) | Prévisualisation |
Résumé
Double-hit hot compression tests were carried on medium-carbon low-alloy steels using Gleeble 3800® thermomechanical simulator. The experiments were performed at strain rates of 0.25 and 0.5 s−1 and temperatures of 1150 and 1200 °C with interpass times of 5, 15, and 25 s. The onset of critical stresses for dynamic transformation (DT) for both first and second hit were detected using the double-differentiation method. It was found that the critical stress for DT increased with a decrease in temperature and an increase in strain rate. The presence of dynamically transformed ferrite was observed and quantified using electron-backscatter diffraction, kernal average misorientation, and grain boundary maps. Then, a thermodynamic analysis was carried out using JmatPro software. A method of determining the change in Gibbs energy during DT phenomenon is proposed for double hit deformation.
| Type de document: | Article publié dans une revue, révisé par les pairs |
|---|---|
| Professeur: | Professeur Jahazi, Mohammad |
| Affiliation: | Génie mécanique |
| Date de dépôt: | 23 oct. 2020 18:07 |
| Dernière modification: | 13 avr. 2023 16:08 |
| URI: | https://espace2.etsmtl.ca/id/eprint/21271 |
Actions (Authentification requise)
 |
Dernière vérification avant le dépôt |