Metastable austenitic steels refer to materials that have numerous engineering applications. Operation of equipment components at different temperatures proceeds under both static and dynamic loads. It is well known that the combined temperature and deformation action can cause martensitic transformations in metastable austenitic steels. This simultaneously strengthens and embrittles the material. In this work, dumbbell-shaped specimens are tested for strength and plasticity after quasi-static uniaxial tension in the temperature range from +65 to –90°C. Structural investigations are performed after plastic deformation. The martensite phase fraction formed in the surface of fractured specimens is defined after tests. It is shown that deformation in a wide temperature range affects phase transformations in metastable austenitic steels. The temperature dependence is found for the volume fraction of the martensite phase and the microhardness of the steels.
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Barannikova, S.A., Kolosov, S.V. & Shlyakhova, G.V. Influence of Temperature and Deformation on Structure and Mechanical Properties of Stainless Steel. Russ Phys J 66, 38–42 (2023). https://doi.org/10.1007/s11182-023-02902-7
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DOI: https://doi.org/10.1007/s11182-023-02902-7