  Dynamic recrystallization is one of the main phenomena responsible for
microstructure evolutions during hot forming. Consequently, getting a better
understanding of DRX mechanisms and being able to predict them is crucial. This
paper proposes a full-field numerical framework to predict the evolution of
subgrain structures upon grain growth, continuous dynamic and post-dynamic
recrystallization. The microstructure representation into the numerical
environment is presented. The developments made to improve substructure
description are detailed extensively. Using these simulation tools, simulation
of grain growth of a fully substructured microstructure are run. The influence
of microstructure topology, of subgrain parameters and of some remaining stored
energy due to plastic deformation is discussed. An analysis of the criterion
for discrimination of recrystallized grains is proposed. Finally, the ability
of the framework to model continuous dynamic and post-dynamic recrystallization
is assessed upon a case study. The influence of grain boundary properties and
of nucleation rules are studied. The representativity of the results in regards
of experimental data will be discussed in an upcoming article.
