Samenvatting
The influence of the austenitic microstructural morphology on the mechanical response of a multiphase steel is analyzed by comparing two relevant configurations, namely (i) uniformly distributed grains of retained austenite embedded in a ferritic matrix and (ii) a banded morphology of the two phases. The analysis is carried out numerically using a discrete dislocation-transformation model that captures processes occurring at sub-grain length scales connected to nucleation and evolution of individual dislocations and martensitic platelets inside the austenitic grains. The simulations indicate that a microstructure composed of uniformly distributed grains of austenite is optimal in terms of strength since it delays the onset of plastic localization compared with banded microstructures.
Originele taal-2 | English |
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Artikelnummer | 074006 |
Pagina's (van-tot) | 074006-1-074006-13 |
Aantal pagina's | 13 |
Tijdschrift | Modelling and Simulation in Materials Science and Engineering |
Volume | 19 |
Nummer van het tijdschrift | 7 |
DOI's | |
Status | Published - okt.-2011 |
Evenement | 5th International Conference on Multiscale Materials Modeling - , Germany Duur: 4-okt.-2010 → 8-okt.-2010 |