CHBIHI, Abdelahad; BARBIER, David; GERMAIN, Lionel; HAZOTTE, Alain; GOUNÉ, Mohamed

doi:10.1007/s10853-014-8029-2

Metadatos

Licencia de uso del documento

CHBIHI, Abdelahad
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
ArcelorMittal Maizières Research SA

BARBIER, David
ArcelorMittal Maizières Research SA

GERMAIN, Lionel
Labex DAMAS
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]

Idioma

Article de revue

Este ítem está publicado en

Journal of Materials Science. 2014, vol. 49, n° 10, p. 3608-3621

Springer Verlag

Resumen en inglés

Using both experimental and modeling approaches, we give some clarifications regarding the mechanisms of interaction between ferrite recrystallization and austenite formation in cold-rolled high-strength steels. Using different thermal paths, we show that ferrite recrystallization and austenite formation can be strongly interdependent. The nature of the interaction (weak or strong) affects significantly the austenite formation and the resulting microstructure. We show that the kinetics of austenite formation depends intrinsically on both heating rates and the extent of ferrite recrystallization. An unexpected behavior of austenite growth was also seen at high heating rates. A possible explanation is presented based on the nature of the local equilibrium at the ferrite-austenite interface. The microstructure is more heterogeneous and anisotropic when both austenite formation and ferrite recrystallization overlap. A mechanism of microstructural formation is proposed, and this is supported by 2D simulations' images.< Leer menos

Palabras clave en inglés

Mechanisms interaction

Modeling approaches

Both experimental

Recrystallization

Ferrite

Cold-rolled high-strength steels

Austenite

DOI

http://dx.doi.org/10.1007/s10853-014-8029-2

Proyecto ANR

Design des Alliages Métalliques pour Allègement des Structures - ANR-11-LABX-0008

Orígen

Importado de Hal

Centros de investigación

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026