GOUNÉ, Mohamed; AOUED, Samy; DANOIX, Frédéric; GEANDIER, Guillaume; POULON-QUINTIN, Angeline; HELL, Jean-Christophe; SOLER, Michel; ALLAIN, Sébastien

doi:10.1016/j.scriptamat.2018.11.012

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GOUNÉ, Mohamed
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

AOUED, Samy
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

DANOIX, Frédéric
Groupe de physique des matériaux [GPM]

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Article de revue

Ce document a été publié dans

Scripta Materialia. 2019-03, vol. 162, p. 181-184

Elsevier

Résumé en anglais

The alloying elements partitioning from martensite to austenite during quenching and partitioning was analysed by coupling in situ High Energy X-Ray Diffraction experiments and 3D atom probe tomography. A rapid and significant carbon partitioning from martensite to austenite without any partitioning of both Mn and Si was highlighted while the interface was immobile. After a relatively short time at 400 °C, a clear Mn partitioning occurs at the vicinity of the α′/γ interface. The analysis conducted indicates that manganese equilibrates its chemical potential during partitioning and raises the issue of the Constrained Carbon Equilibrium model applicability throughout the partitioning process.< Réduire

Mots clés en anglais

Steels

Quenching and partitioning

Partitioning

High Energy

X-Ray Diffraction

Atom probe tomography

DOI

http://dx.doi.org/10.1016/j.scriptamat.2018.11.012

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