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Austenite formation in a ferrite/martensite cold-rolledmicrostructure during annealing of advanced high-strength steels

Published online by Cambridge University Press:  14 February 2014

C. Philippot ,
J. Drillet ,
P. Maugis ,
V. Hebert  and
M. Dumont
C. Philippot
Affiliation:
ArcelorMittal Research SA, Voie Romaine, BP 30320, 57283 Maizieres-lès-Metz, France. e-mail: [email protected] Aix-Marseille Université, UTLN, CNRS, IM2NP UMR 7334 Aix-Marseille University, Av. Escadrille Normandie Niemen, case 142, 13397 Marseille Cedex 20, France
J. Drillet
Affiliation:
ArcelorMittal Research SA, Voie Romaine, BP 30320, 57283 Maizieres-lès-Metz, France. e-mail: [email protected]
P. Maugis
Affiliation:
Aix-Marseille Université, UTLN, CNRS, IM2NP UMR 7334 Aix-Marseille University, Av. Escadrille Normandie Niemen, case 142, 13397 Marseille Cedex 20, France
V. Hebert
Affiliation:
ArcelorMittal Research SA, Voie Romaine, BP 30320, 57283 Maizieres-lès-Metz, France. e-mail: [email protected]
M. Dumont
Affiliation:
Aix-Marseille Université, UTLN, CNRS, IM2NP UMR 7334 Aix-Marseille University, Av. Escadrille Normandie Niemen, case 142, 13397 Marseille Cedex 20, France
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Abstract

From a ferrite/martensite cold-rolled microstructure, the interaction between ferriterecrystallization and austenite formation is investigated. It is observed that a slowheating rate promotes the ferrite recrystallization and a homogeneous microstructure,whereas a fast heating rate delays the recrystallization and leads to heterogeneouslydistributed austenite islands.

Keywords

austenite formationferrite recrystallizationheating rateheterogeneitydual-phase steel
Type
Research Article
Information
Metallurgical Research & Technology , Volume 111 , Issue 1 , 2014 , pp. 3 - 8
Copyright
© EDP Sciences 2014

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