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A new topological approach for the mean field modeling of dynamic recrystallization

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Academic year: 2021

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Figure 1: Representation of the microstructure in mean field models. (a) EBSD picture of an austenitic steel 304L microstructure, (b) representation of a microstructure in mean field models as a set of spherical grains, (c) standard mean field approach : e
Figure 2: Representation of a grain in the NHM. Each grain i has a surface fraction θ(i) in contact with recrystallized (RX) grains represented in red colour and a surface fraction (1 − θ)(i) in contact with  non-recrystallized (NR) grains represented in b
Figure 3: Schematic representation of (a) the surface of the grain i with RX grains on its boundary (b) the surface of the grain i as it is considered in the NHM (c) a 3D portion of a grain boundary with three nuclei as neighbors
Figure 4: Number of neighbors as a function of the normalized equivalent sphere radius
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