Interactions between ferrite recrystallization and austenite formation in high-strength steels
CHBIHI, Abdelahad
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
ArcelorMittal Maizières Research SA
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
ArcelorMittal Maizières Research SA
GERMAIN, Lionel
Labex DAMAS
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
See more >
Labex DAMAS
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
CHBIHI, Abdelahad
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
ArcelorMittal Maizières Research SA
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
ArcelorMittal Maizières Research SA
GERMAIN, Lionel
Labex DAMAS
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
Labex DAMAS
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
HAZOTTE, Alain
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
Labex DAMAS
< Reduce
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
Labex DAMAS
Language
en
Article de revue
This item was published in
Journal of Materials Science. 2014, vol. 49, n° 10, p. 3608-3621
Springer Verlag
English Abstract
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 ...Read more >
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.Read less <
English Keywords
Mechanisms interaction
Modeling approaches
Both experimental
Recrystallization
Ferrite
Cold-rolled high-strength steels
Austenite
ANR Project
Design des Alliages Métalliques pour Allègement des Structures - ANR-11-LABX-0008
Origin
Hal imported