Analysis of banded morphology in multiphase steels based on a discrete dislocation-transformation model

Jingyi Shi*, Sergio Turteltaub, Erik Van der Giessen

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

6 Citaten (Scopus)
282 Downloads (Pure)

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-2English
Artikelnummer074006
Pagina's (van-tot)074006-1-074006-13
Aantal pagina's13
TijdschriftModelling and Simulation in Materials Science and Engineering
Volume19
Nummer van het tijdschrift7
DOI's
StatusPublished - okt-2011
Evenement5th International Conference on Multiscale Materials Modeling - , Germany
Duur: 4-okt-20108-okt-2010

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