Metall. Res. Technol.
Volume 111, Number 1, 2014
|Page(s)||3 - 8|
|Published online||14 February 2014|
Austenite formation in a ferrite/martensite cold-rolled microstructure during annealing of advanced high-strength steels
1 ArcelorMittal Research SA, Voie
Romaine, BP 30320, 57283
2 Aix-Marseille Université, UTLN, CNRS, IM2NP UMR 7334 Aix-Marseille University, Av. Escadrille Normandie Niemen, case 142, 13397 Marseille Cedex 20, France
Accepted: 22 January 2014
From a ferrite/martensite cold-rolled microstructure, the interaction between ferrite recrystallization and austenite formation is investigated. It is observed that a slow heating rate promotes the ferrite recrystallization and a homogeneous microstructure, whereas a fast heating rate delays the recrystallization and leads to heterogeneously distributed austenite islands.
Key words: austenite formation / ferrite recrystallization / heating rate / heterogeneity / dual-phase steel
© EDP Sciences 2014
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