Atom probe tomography of the austenite–ferrite interphase boundary composition in a model alloy Fe–C–Mn

O. Thuillier (1) , Frederic Danoix (1) , M. Gouné (2) , Didier Blavette (1)

1 GPM - Groupe de physique des matériaux
2 ArcelorMittal Maizières Research SA

A tomographic atom probe analysis has been developed to study the interfacial conditions during isothermal austenite transformation to ferrite at 700 °C in an Fe–C–Mn model alloy. The interfacial conditions lead to different alloying element profiles across the interface, and a comparison is made between this experimental result and the DICTRA software predictions under the various conditions.

Mots clés: Atom probe tomography; Para-equilibrium; Local equilibrium; Austenite–ferrite transformation; DICTRA

Domaines: Physique [physics]; Matière Condensée [cond-mat]

O. Thuillier, Frederic Danoix, M. Gouné, Didier Blavette. Atom probe tomography of the austenite–ferrite interphase boundary composition in a model alloy Fe–C–Mn. Scripta Materialia, 2006, Volume 55, Issue 11, pp.1071-1074. ⟨10.1016/j.scriptamat.2006.03.040⟩. ⟨hal-00125853⟩