Time-evolution of microstructure and mechanical behaviour of double annealed medium Mn steel
BOUAZIZ, Olivier
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
Labex DAMAS
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Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
Labex DAMAS
BOUAZIZ, Olivier
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
Labex DAMAS
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
Labex DAMAS
HAZOTTE, Alain
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
Labex DAMAS
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Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
Labex DAMAS
Langue
en
Article de revue
Ce document a été publié dans
Materials Science and Technology. 2018, vol. 35, n° 17, p. 2076-2083
Maney Publishing
Résumé en anglais
Cold rolled 0.1C-4.7Mn (wt-%) steel was submitted to double annealing. The holding time of second intercritical annealing at 650°C was varied between 3 min and 30 h. Tensile behavior after each treatment was measured and ...Lire la suite >
Cold rolled 0.1C-4.7Mn (wt-%) steel was submitted to double annealing. The holding time of second intercritical annealing at 650°C was varied between 3 min and 30 h. Tensile behavior after each treatment was measured and analysed. Microstructure characterisation was performed using field emission gun scanning electron microscope, transmission electron microscope and saturation magnetisation method. Moreover, interrupted tensile tests were done to obtain the kinetics of austenite destabilisation during straining. An important effect of soaking time on the microstructure and associate mechanical properties was revealed and analysed. Considering thermal and mechanical stability of retained austenite, the optimum combination of phases, providing the best strength-ductility balance, was found after 2 h holding.< Réduire
Mots clés en anglais
Medium Mn steel
Double annealing
Tensile behavior . Strain hardening rate
Transformation induced plasticity (TRIP)
Microstructure
Fresh martensite . Retained austenite
Origine
Importé de halUnités de recherche