Alloying-element interactions with austenite/martensite interface during quenching and partitioning of a model Fe-C-Mn-Si alloy. (15th March 2019)

• Record Type: Journal Article
• Authors: Gouné, M.; Aoued, S.; Danoix, F.; Geandier, G.; Poulon-Quintin, A.; Hell, J.C.; Soler, M.; Allain, S.Y.P.
• Is Part Of: Scripta materialia. Number 162(2019)
• Page Start: 181
• Page End: 184
• Publication Date: 2019-03-15
• Subjects: Steels -- Quenching and partitioning -- Partitioning -- High Energy X-Ray Diffraction -- Atom probe tomography; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2018.11.012
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: 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. Graphical abstract: Unlabelled Image