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Mean field modelling of dynamic and post-dynamic recrystallization during hot deformation of Inconel 718 in the absence of δ phase particles

Meriem Zouari 1, 2 Nathalie Bozzolo 1 Roland E. Logé 3, 1
1 CEMEF - Centre de Mise en Forme des Matériaux
2 LISI - Laboratoire d'Informatique Scientifique et Industrielle
3 Laboratory of Thermomechanical Metallurgy
Abstract : Dynamic and post-dynamic recrystallization kinetics were investigated during hot-working of Inconel 718 as a function of temperature, strain and strain rate in the single phase domain. The post-dynamic evolution was found to be extremely fast and impacting significantly the grain size. A two-site mean field model including both dynamic and post-dynamic evolution was used to predict the recrystallized fraction, the average grain size and the stress–strain curves in different thermomechanical conditions.
Keywords : Hot forging Hot torsion test Dynamic recrystallization Post-dynamic recrystallization Stress–strain curve Inconel 718
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Journal articles
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https://hal-mines-paristech.archives-ouvertes.fr/hal-01297977
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Submitted on : Tuesday, April 5, 2016 - 11:09:03 AM
Last modification on : Thursday, September 24, 2020 - 5:22:55 PM

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Meriem Zouari, Nathalie Bozzolo, Roland E. Logé. Mean field modelling of dynamic and post-dynamic recrystallization during hot deformation of Inconel 718 in the absence of δ phase particles. Materials Science and Engineering: A, Elsevier, 2016, 655, pp.408-424. ⟨10.1016/j.msea.2015.12.102⟩. ⟨hal-01297977⟩

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