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Effect of Silicon and Nitrogen on the Microstructure and Mechanical Behavior of High-Phosphorous Steels

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Abstract

Steel corrosion is a costly problem. The Delhi Iron Pillar containing high amount of phosphorous withstood atmospheric corrosion for about 1600 years. In the present work, steels containing 0.13 wt% P, 0.05 wt% C, and varying amounts of silicon and nitrogen are prepared through the wrought route in order to investigate the combined effects of alloying additions of Si and N as well as thermomechanical processing on their mechanical properties. The effect of the alloying elements and processing on grain boundary segregation of phosphorous has been studied by EDS. The UTS values of the hot forged steels are found to be above 400 MPa, the elongation is above 30%, and the n values are above 0.3. The maximum impact energy obtained is 284 J in Fe–0.05C–0.13P–0.48Si–0.015N steel.

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Acknowledgments

The authors acknowledge Vaishnav Steel Private Limited, Muzaffarnagar, India, for providing their melting and casting facility for research purpose.

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Authors and Affiliations

  1. Department of Metallurgical and Materials Engineering, IIT Roorkee, Roorkee, 247667, India

    Yashwant Mehta, Vikram V. Dabhade & Gajanan P. Chaudhari

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  1. Yashwant Mehta
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  2. Vikram V. Dabhade
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  3. Gajanan P. Chaudhari
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Correspondence to Yashwant Mehta.

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Mehta, Y., Dabhade, V.V. & Chaudhari, G.P. Effect of Silicon and Nitrogen on the Microstructure and Mechanical Behavior of High-Phosphorous Steels. Metallogr. Microstruct. Anal. 5, 384–391 (2016). https://doi.org/10.1007/s13632-016-0298-5

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  • DOI: https://doi.org/10.1007/s13632-016-0298-5

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