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

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.