3D level set modeling of static recrystallization considering stored energy fields

https://hal-mines-paristech.archives-ouvertes.fr/hal-01573836/document

Modeling of dynamic and post-dynamic recrystallization by coupling a full field approach to phenomenological laws

Mesoscopic coupled modeling of texture formation during recrystallization considering stored energy decomposition

A multiscale modeling framework, combining a graph-based vertex model of microstructure evolution with a GPU-parallelized crystal plasticity model, was recently proposed by the authors. Considering hot rolling of copper, the full capabilities of the model are demonstrated in the present work. The polycrystal plasticity model captures the plastic response and the texture evolution during materials processing while the vertex model provides central features of grain structure evolution through dynamic recrystallization, such as nucleation and growth of individual crystals. The multiscale model makes it possible to obtain information regarding grain size and texture development throughout the workpiece, capturing the effects of recrystallization and heterogeneous microstructure evolution. Recognizing that recrystallization is a highly temperature dependent phenomenon, simulations are performed at different process temperatures. The results show that the proposed modeling framework is capable of simultaneously capturing central aspects of material behavior at both the meso- and macrolevel. Detailed investigation of the evolution of texture, grain size distribution and plastic deformation during the different processing conditions are performed, using the proposed model. The results show a strong texture development, but almost no recrystallization, for the lower of the investigated temperatures, while at higher temperatures an increased recrystallization is shown to weaken the development of a typical rolling texture. The simulations also show the influence of the shear deformation close to the rolling surface on both texture development and recrystallization.

https://iopscience.iop.org/article/10.1088/0965-0393/24/7/075004/pdf

Recrystallization and texture evolution during hot rolling of copper, studied by a multiscale model combining crystal plasticity and vertex models

Normal and abnormal grain growth in magnesium: Experimental observations and simulations

A new full field numerical approach for the simulation of dynamic and post-dynamic recrystallization will be detailed. A level Set framework is employed to link a crystal plasticity finite element method with the modeling of recrystallization. Plasticity is calculated through the activation of slip systems and provides predictions for both SSDs and GNDs densities. These predictions control the activation and kinetics of recrystallization. All the developments are applied on 304L stainless steel.

/pdf/full-field-modeling-of-dynamic-recrystallization-in-a-global-58805gkb2m.pdf

Romain Boulais-Sinou

Papers

3D level set modeling of static recrystallization considering stored energy fields

Full field modeling of dynamic recrystallization in a global level set framework, application to 304L stainless steel