• Dokkum, J. S. Van
• Sedighiani, Karo
• Roters, F.
• Diehl, M.
• Bos, C.
• Shah, V.

Abstract

<p>Predicting microstructure and (micro-)texture evolution during thermo-mechanical processing requires the combined simulation of plastic deformation and recrystallization. Here, a simulation approach based on the coupling of a full-field dislocation density based crystal plasticity model and a cellular automaton model is presented. A regridding/remeshing procedure is used to transfer data between the deformed mesh of the large-strain crystal plasticity model and the regular grid of the cellular automaton. Moreover, a physics based nucleation criterion has been developed based on dislocation density difference and changes in orientation due to deformation. The developed framework is used to study meta-dynamic recrystallization during double-hit compression tests and multi-stand rolling in high-resolution representative volume elements. These simulations reveal a good agreement with experimental results in terms of texture evolution, mechanical behaviour and growth kinetics, while enabling insights regarding the effect of nucleation on kinetics and crystallographic texture evolution.</p>

Topics

• density
• impedance spectroscopy
• microstructure
• polymer
• simulation
• dislocation
• compression test
• texture
• plasticity
• recrystallization
• crystal plasticity
• hot rolling