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A phase field model has been developed to simulate microstructure evolution during intercritical annealing.The model describes ferrite recrystallization,intercritical austenite formation and decomposition.In particular,the overlap of ferrite recrystallization and austenite formation for sufficiently fast line speeds has been taken into account in the model.The model has been benchmarked and validated with experimental data for a DP600 steel.Further,simulations have been performed with a systematic variation of processing parameters,i.e.line speed and intercritical holding temperature.Processing maps have been constructed based on these simulations providing martensite fraction and ferrite grain size as a function of line speed and intercritical temperature for the investigated DP600 steel.This study demonstrates the phase field approach as a promising tool to develop through-process models for advanced high strength steels.