Critical factors governing the thermal stability of austenite in an ultra-fined grained Medium-Mn steel |
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| Authors: | A. Arlazarov O. Bouaziz A. Hazotte |
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| Affiliation: | 1. ArcelorMittal Research and Development, Maizières-lès-Metz Cedex, France;2. LEM3, Laboratoire d’Etude des Microstructures et de Mécanique des Matériaux, UMR 7239 CNRS-Université de Lorraine, Metz, France |
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| Abstract: | The time-evolution of retained austenite at 650 °C is shown to be a fair indicator of the factors governing the austenite stability. The grain size contribution to austenite stability is evidenced and a martensite start temperature (Ms) law applicable to medium-Mn steels and including both the chemical and size effects is determined. |
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| Keywords: | Medium-Mn steels retained austenite stability Ms temperature |
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