Title :

Development of 3rd generation Medium Mn duplex steels for automotive applications

Author(s) :

Perlade, Astrid [Auteur]
Antoni, Annie [Auteur]
Besson, Rémy [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Caillard, Daniel [Auteur]
Callahan, Michael [Auteur]
Emo, Jonathan [Auteur]
Gourgues, Anne-Françoise [Auteur]
Maugis, Philippe [Auteur]
Mestrallet, Aurore [Auteur]
Thuinet, Ludovic [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Tonizzo, Quentin [Auteur]
Schmitt, Jean-Hubert [Auteur]

Journal title :

Materials Science and Technology

Volume number :

2

Pages :

1-16

Publication date :

2018

HAL domain(s) :

Chimie/Matériaux
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]

English abstract : [en]

The mechanical behaviour and fracture were studied in a Fe–5Mn–2.5Al–0.2C (in wt-%) Medium Mn steel. Metallographic and magnetic measurements confirm the significant influence of the transformation kinetics of the ...
Show more >The mechanical behaviour and fracture were studied in a Fe–5Mn–2.5Al–0.2C (in wt-%) Medium Mn steel. Metallographic and magnetic measurements confirm the significant influence of the transformation kinetics of the strain-induced martensite on the mechanical properties and strain heterogeneities (Lüders and Portevin-Le Chatelier-like phenomena). An accurate study of isothermal evolutions of the microstructure, associated with atomistic calculations, complements current thermodynamic databases to quantify the nature and volume fraction of phases at different temperatures. A kinetic approach then predicts the influence of annealing conditions on the composition of retained austenite, key parameter for the martensitic transformation kinetics. This supports quantitative modelling of the influence of the intercritical annealing temperature on the ultimate tensile strength for industrial developments of these new grades.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
ENSCL
CNRS
INRA

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Métallurgie Physique et Génie des Matériaux

Submission date :

2019-05-17T09:25:03Z
2019-10-24T08:08:40Z