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Room Temperature Microstructure and Property Evaluation of a Heat Treated Fully Bainitic 20CrMoVTiB410 Steel

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Abstract

The room temperature mechanical behavior of the fully bainitic steel grade 20CrMoVTiB410 was studied in the as-quenched and tempered conditions. The hardenability response of the steel during heat treatment was assessed. In the as-quenched condition itself, the steel exhibited a good combination of strength, ductility and toughness. Tempering the quenched steel till to 550°C, showed uniform mechanical properties. Tempering at 650°C showed secondary hardening behaviour, where the highest strength and least impact toughness was observed. Tempering at 700°C showed a sharp decrease in strength but with significant enhancement of toughness. The properties obtained were correlated with the microstructure and phase analysis was established using optical, scanning electron microscope, transmission electron microscope and x-ray diffraction techniques.

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Acknowledgements

The authors wish to thank the constant encouragement and support provided by Dr. Baba Kalyani, Chairman and Managing Director and Mr. R. K. Goyal, Managing Director, Kalyani Carpenter Special Steels Ltd., Pune. A special thanks to the Kalyani Centre for Technology and innovation (KCTI) for their constant support. The authors would like to thank the Department of Scientific and Industrial Research for the recognition and support of our R&D activities.

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  1. Kalyani Carpenter Special Steels Pvt. Ltd, Mundhwa, Pune, Maharashtra, 411036, India

    Kulkarni Srivatsa, Perla Srinivas, G. Balachandran & V. Balasubramanian

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  1. Kulkarni Srivatsa
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  2. Perla Srinivas
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  3. G. Balachandran
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  4. V. Balasubramanian
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Correspondence to Kulkarni Srivatsa.

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Srivatsa, K., Srinivas, P., Balachandran, G. et al. Room Temperature Microstructure and Property Evaluation of a Heat Treated Fully Bainitic 20CrMoVTiB410 Steel. JOM 68, 2704–2712 (2016). https://doi.org/10.1007/s11837-016-2063-2

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  • DOI: https://doi.org/10.1007/s11837-016-2063-2

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