ALLAIN, S. Y. P.; GEANDIER, Guillaume; HELL, Jean-Christophe; SOLER, Michel; DANOIX, Fréderic; GOUNÉ, Mohamed

doi:10.1016/j.scriptamat.2016.12.026

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ALLAIN, S. Y. P.
Institut Jean Lamour [IJL]

GEANDIER, Guillaume
Institut Jean Lamour [IJL]

HELL, Jean-Christophe
ArcelorMittal Maizières Research SA

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Article de revue

Ce document a été publié dans

Scripta Materialia. 2017, vol. 131, p. 15-18

Elsevier

Résumé en anglais

We report the first ultra-fast time-resolved quantitative information on the quenching and partitioning process of conventional high strength steel by in-situ High Energy X-Ray Diffraction experiment. The time and temperature evolutions of phase fractions, their carbon content and internal stresses were determined. The austenite to martensite transformation below Ms is followed by a stagnant stage during which microstructural state remained unchanged. Afterwards, a fast kinetics of carbon enrichment of austenite during the partitioning step at 400 °C is highlighted. The analysis proposed supports the carbon diffusion from martensite to austenite as the main mechanisms responsible for this enrichment.< Réduire

Mots clés en anglais

In-situ High Energy X-Ray Diffraction

Quenching and partitioning

Phase transformation

Partitioning

Steels

DOI

http://dx.doi.org/10.1016/j.scriptamat.2016.12.026

Project ANR

Partition du carbone dans les phases ferritiques nanostructurées: cinétiques et microstructures - ANR-14-CE07-0029

Origine

Importé de hal

Unités de recherche

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026