Temperature-Dependent Mechanical Stability of Retained Austenite in Thermomechanically Processed 3Mn Steel

Aleksandra Kozłowska; Adam Grajcar; Aleksandra Janik; Krzysztof Radwański

doi:10.4028/www.scientific.net/MSF.1016.762

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HomeMaterials Science ForumMaterials Science Forum Vol. 1016Temperature-Dependent Mechanical Stability of...

Temperature-Dependent Mechanical Stability of Retained Austenite in Thermomechanically Processed 3Mn Steel

Abstract:

The temperature-dependent mechanical stability of retained austenite in medium-Mn transformation induced plasticity 0.17C-3.3Mn-1.6Al-1.7Al-0.22Si-0.23Mo thermomechanically processed steel was investigated using scanning electron microscopy (SEM), electron backscatter diffraction (EBSD) and X-ray diffraction (XRD) methods. Specimens were deformed up to rupture in static tensile tests in a temperature range 20–200°C. It was found that deformation temperature affects significantly the intensity of TRIP effect. In case of specimens deformed at temperatures higher than 60°C, a gradual temperature-related decrease in the stability of γ phase was noted. It indicates a progressive decrease of the significance of the TRIP effect and at the same time the growing importance of the thermally activated processes affecting a thermal stability of retained austenite.

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Materials Science Forum (Volume 1016)

Pages:

762-767

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.1016.762

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Online since:

January 2021

Authors:

Aleksandra Kozłowska*, Adam Grajcar, Aleksandra Janik, Krzysztof Radwański

Keywords:

Deformation Temperature, Medium-Mn Steel, Stability of Retained Austenite, TRIP Effect

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