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Fig. 13 | Advanced Modeling and Simulation in Engineering Sciences

Fig. 13

From: Microstructure evolution in deformed polycrystals predicted by a diffuse interface Cosserat approach

Fig. 13

A zoom on a subgrain boundary generated in the six grain microstructure due to kink band formation, c.f. Figs. 3 and 6 (the subgrain boundary appears in the lower left corner of the microstructure in those figures). Two solutions are compared after 6 min of constant deformation, which is when the very localized recovery of the dislocation density starts to appear. To the left, the same mesh was used as in the previous figure whereas in the images to the right, a finer mesh was used. From top to bottom, the images show the orientation, the dislocation density \(\rho \) and the norm of the curvature \(|\nabla \theta |\). The two solutions are not identical, but the same phenomena can be observed with localization near or inside regions with high local curvature and dislocation density

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