  Two finite element level-set (FE-LS) formulations are compared for the
modeling of grain growth of 316L stainless steel in terms of grain size, mean
values and histograms. Two kinds of microstructures are considered, some are
generated statistically from EBSD maps and the others are generated by
immersion of EBSD data in the FE formulation. Grain boundary (GB) mobility is
heterogeneously defined as a function of the GB disorientation. On the other
hand, GB energy is considered as heterogeneous or anisotropic, respectively
defined as a function of the disorientation and both the GB misorientation and
the GB inclination. In terms of mean grain size value and grain size
distribution (GSD), both formulations provide similar responses. However, the
anisotropic formulation better respects the experimental disorientation
distribution function (DDF) and predicts more realistic grain morphologies. It
was also found that the heterogeneous GB mobility described with a sigmoidal
function only affects the DDF and the morphology of grains. Thus, a slower
evolution of twin boundaries (TBs) is perceived.
