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Deformation and recrystallization behavior of the cast structure in large size, high strength steel ingots: Experimentation and modeling

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Chadha, K., Shahriari, D., Tremblay, R., Bhattacharjee, P. P. et Jahazi, M.. 2017. « Deformation and recrystallization behavior of the cast structure in large size, high strength steel ingots: Experimentation and modeling ». Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, vol. 48, nº 9. pp. 4297-4313.
Compte des citations dans Scopus : 6.

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Abstract

Constitutive modeling of the ingot breakdown process of large size ingots of high strength steel was carried out through comprehensive thermomechanical processing using Gleeble 3800® thermomechanical simulator, finite element modeling (FEM), optical and electron back scatter diffraction (EBSD). For this purpose, hot compression tests in the range of 1473 K to 1323 K (1200 °C to 1050 °C) and strain rates of 0.25 to 2 s−1 were carried out. The stress-strain curves describing the deformation behavior of the dendritic microstructure of the cast ingot were analyzed in terms of the Arrhenius and Hansel-Spittel models which were implemented in Forge NxT 1.0® FEM software. The results indicated that the Arrhenius model was more reliable in predicting microstructure evolution of the as-cast structure during ingot breakdown, particularly the occurrence of dynamic recrystallization (DRX) process which was a vital parameter in estimating the optimum loads for forming of large size components. The accuracy and reliability of both models were compared in terms of correlation coefficient (R) and the average absolute relative error (ARRE).

Item Type: Peer reviewed article published in a journal
Professor:
Professor
Jahazi, Mohammad
Affiliation: Génie mécanique
Date Deposited: 24 Aug 2017 13:35
Last Modified: 19 Nov 2021 20:10
URI: https://espace2.etsmtl.ca/id/eprint/15669

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