Prediction of the grain size evolution during thermal treatments at the mesoscopic scale: a numerical framework and industrial examples

Prédiction de l’évolution de taille de grains à l’échelle mésoscopique lors des traitements thermiques : un cadre numérique et des exemples industriels

Amico Settefrati (1) , Pascal de Micheli (1) , Ludovic Maire (2) , Benjamin Scholtes (2) , Nathalie Bozzolo (2) , Charbel Moussa (2) , Etienne Perchat (1) , Marc Bernacki (2)

1 Transvalor S. A.
2 CEMEF - Centre de Mise en Forme des Matériaux

Recently, an original full field model working at the mesoscopic scale using the level set (LS) method in a finite element (FE) framework has been introduced. This approach has demonstrated its potential for the simulation of grain growth and recrystallization problems. Through the development of the DIGIMU ® software, this methodology is now considered for industrial applications. The paper presents (i) the recent developments made on the LS approach and (ii) some examples of large scale simulations in two and three dimensions considering thermal treatments applied on materials. Grain boundaries motion considering the presence or not of second phase particles (like precipitates) are investigated.

Mots clés: Smith-Zener pinning; Grain growth; Mesoscale modeling; Level Set numerical method; Finite element modeling

Domaines: Sciences de l'ingénieur [physics]; Matériaux

Amico Settefrati, Pascal de Micheli, Ludovic Maire, Benjamin Scholtes, Nathalie Bozzolo, et al.. Prediction of the grain size evolution during thermal treatments at the mesoscopic scale: a numerical framework and industrial examples. Matériaux & Techniques, 2018, Control, modeling and characterization of heat treatment and surface engineering, 106 (105), ⟨10.1051/mattech/2018034⟩. ⟨hal-01853983⟩