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Mastère Spécialisé AIMove: Artificial Intelligence and Movement in Industries and Creation


Olivier Remy, third year student of the Corps des Mines


Le Forum mécatronique 2019

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2421820188201892019024218 'New 3D Finite-Element level-Set Framework for the modeling of Solid-Solid phase transformations and grain Interfaces for Large-Scale Polycrystals.'

'New 3D Finite-Element level-Set Framework for the modeling of Solid-Solid phase transformations and grain Interfaces for Large-Scale Polycrystals.'

New 3D Finite-Element level-Set Framework for the modeling of Solid-Solid phase transformations and grain Interfaces for Large-Scale Polycrystals.

Proposition de thèse


Mécanique numérique et Matériaux

Ecole doctorale

SFA - Sciences Fondamentales et Appliquées

Directeur de thèse


Unité de recherche

Centre de Mise en Forme des Matériaux

Date de validité


Site Web

Méthode EF, HPC, C++, Metallurgie

FE Method, HPC, C++, Metallurgy, Solid-solid phase transformations, Grain interfaces



In the emerging context of “digital metallurgy”, the DIGIMU Chair and consortium have two main objectives. The first one is to develop an efficient multiscale numerical framework specifically designed to take such problems. The second one is to bring the corresponding numerical methods to an industrial level of maturity, by decreasing significantly their computational cost and by validating them against the industrial expertise in the DIGIMU consortium

In order to accurately describe the 3D evolution of polycrystals (recrystallization, phase transformationsÂ…), full-field methods such as the phase-field (PF) or the level-set (LS) methods have to be employed. In this context, a new FE numerical framework to model grain growth (GG) and recrystallization (ReX) based on a LS description of the interfaces and meshing/remeshing capabilities has been recently developeda. Interestingly, if the LS approach was extended to other self-diffusion mechanisms such as spheroidization in titanium alloys or sintering in powder metallurgy, solid-solid phase transformations (SSPT) was only newly addressedb despite the obvious interest to couple phases and grains evolutions in the same LS numerical framework. In the proposed PhD project, the existing LS framework will be extended in order to model SSPT. The new proposed formalism will be investigated in context of austenite-ferrite transformations. The proposed numerical framework will be compared to pre-existing PF strategy dedicated to this topic.

Finally, the resulting developments will be prepared for integra-tion in the DIGIMU® software package.

an austenite-to-ferrite transformation


DIGIMU is an ANR industrial Chair handled by ARMINES MINES ParisTech and co-funded by ANR and an industrial consortium formed by ArcelorMittal, AREVA, ASCOMETAL, AUBERT & DUVAL, CEA and SAFRAN. This Chair deals with the Development of an Innovative and G lobal framework for the ModelIng of MicrostrUctural evolutions involved in metal forming processes. DIGIMU® is also the name of the resulting software developed by the company TRANSVALOR as a project partner and an industrial consortium involving TIMET, CONSTELLIUM and the chair partners.
Countless products involved in our every-day life rely on vital metal parts. Optimizing these parts requires a knowledge of how materials properties change during forming operations. Although the understanding of the underlaying metallurgical phenomena has improved thanks to the continuous progress of experimental facilities, the interest for increasingly fine and predictive simulations has been recently growing.



Profil candidat


Degree: MSc or MTech in Applied Mathematics, Metallurgy or Materials Science, with excellent academic record
Skills: Finite Element Method, Metallurgy, proficiency in English, ability to work within a multi-disciplinary team.


B. Scholtes et al. Computational Materials Science, 2015 109:388- 398, and 2016 122:57-71.
M. Bernacki et al. A new full field framework to model grain and phase boundaries migration during diffusive solid/solid phase transformations and recrystallization, ReX&GG 2019 proceedings.

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Contrat de recherche

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