An analysis of the consistency of Cribb/Reed-Hill's model with strain aging in FeMnAl systems is attractive since it is a model specifically developed for austenitic systems and based on mechanisms whose activation energy is compatible with the energy for vacancy migration. The present work proposed the application of this model to the FeMnAlSiC system, which besides presenting an essentially austenitic structure also shows a high level of carbon in solid solution. Parameters, such as the interaction energies between carbon and vacancy; the interaction energies between the carbonvacancy dipoles and the dislocations; and the concentration of the carbon-vacancy pairs, of free vacancies, and of free carbon, were estimated for the FeMnAlSiC system. Some corrections in the model were also proposed, such as in the calculation of the energy associated with dipole ordering and of the elastic interaction between the vacancy and the dislocation.
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