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Mechanical properties and microstructure of a carbon manganese steels subjected to ultra-fast heating

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Abstract

Ultra-fast heating is an emerging process technique where an attractive range of mechanical properties is obtained due to the unique microstructures developed. A medium carbon (0.26%) manganese steel grade in strip form was subjected to ultra-fast heating at a range of heating rates between 10 and 1000 °C/s to 850 °C austenitization and held for a soaking time of 1 and 300 seconds, using a Gleeble3800 thermomechanical simulator. The rapidly austenitized samples were quenched in water. Micro tensile samples extracted and tested shows, that the steel has ultra-high strength levels, which increase with the heating rate, peaking at 500 °C/s, where 2002 MPa tensile strength with 11.5% elongation (Tensile Strength × elongation= 22 GPa%) was achieved. Ultra-fast heating leads to finer grain size development and non-homogenous hard martensite and bainite phase distribution in a ferrite matrix that enhanced the mechanical properties.

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Authors and Affiliations

  1. Research and Development, JSW Steel Ltd, Vijayanagar works, Toranagallu, Bellary, Karnataka, 583275, India

    Arbind Kumar Akela, M Gafoorbhasha, J Raghushant, D Satish Kumar & G Balachandran

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  1. Arbind Kumar Akela
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  2. M Gafoorbhasha
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  3. J Raghushant
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  4. D Satish Kumar
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  5. G Balachandran
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Correspondence to Arbind Kumar Akela.

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Akela, A.K., Gafoorbhasha, M., Raghushant, J. et al. Mechanical properties and microstructure of a carbon manganese steels subjected to ultra-fast heating. Sādhanā 48, 153 (2023). https://doi.org/10.1007/s12046-023-02228-7

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  • DOI: https://doi.org/10.1007/s12046-023-02228-7

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