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Lecture

WEB A benchmark for precipitation in microalloyed steel

Wednesday (23.09.2020)
14:45 - 15:00 M: Modelling and Simulation 2
Part of:


Precipitation is an important mechanism for controlling the microstructure and mechanical properties of metallic materials. During the thermomechanic treatment, precipitations can pin the recrystallization front, resulting in smaller grains and, hence, improved mechanical properties. Moreover, precipitates can hinder the motion of dislocations. Simulating precipitate growth is therefore an important step to predict the material behavior. Various modelling strategies exist which differ in computation time and accuracy: Unit cell models for example predict the growth of exactly one precipitate in an infinite medium and, thereby, neglect the interaction between different precipitates. Full field models, in contrast, also take into account that precipitates interact during growth. In this contribution, a benchmark problem and different solutions for the simulation of precipitate growth is presented. The considered material is a microalloyed steel (FeNbC) in which Niobium carbides form in the austenite phase.

Speaker:
Dr.-Ing. Martin Diehl
Max-Planck-Institut für Eisenforschung GmbH
Additional Authors:
  • Lukas Kertsch
    Fraunhofer IWM
  • Dr. Dirk Helm
    Fraunhofer IWM
  • Prof. Dr. Dierk Raabe
    Max-Planck-Institut für Eisenforschung GmbH