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Rapid Elemental Partitioning in Medium Mn Steel During Short Time Annealing: An In-Situ Study Using Synchrotron X-Rays

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Document pages: 16 pages

Abstract: High energy synchrotron radiation was used to perform an in-situ diffraction experiment in medium Mn Fe-6Mn-0.5C-1Al alloy to study the elemental partitiong and austenite phase evolution at different heating, holding and cooling stages. It has been observed that austenite phase fraction increases at inter-critical annealing temperature significantly and it remains stable at room temperature. Austenite phase stability at room temperature is due to rapid partitioning of Mn and C during annealing. The relative change in d-spacing (Δd d) during heating-cooling indicates partitioning of alloying elements during inter-critical annealing.

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