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Cast Medium-Manganese FeMnAlSiC Steel

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Abstract

Certain medium-manganese (6–12 wt% Mn) steels can be heat-treated to produce single-phase (austenite) or multi-phase (ferrite, austenite, bainite, martensite, and/or iron carbide) microstructures. With the proper amount of silicon and aluminum, both transformation-induced plasticity (TRIP) and/or twinning-induced plasticity (TWIP) can be the active deformation mechanism. In this study, two steel heats with compositions of Fe–7.53Mn–2.01Al–1.94Si–0.74C and Fe–7.71Mn–1.57Al–1.51Si–0.50C were investigated. The lower-carbon steel had a wider heat treating range but did not achieve as high of a hardness as the higher-carbon steel. Multi-phase microstructures were produced in both of these steels, and the multi-phase microstructures had higher yield strength compared to single-phase (austenite) microstructures. A high iron and manganese content skull adhered to the sides of the furnace after induction melting. This skull was difficult to remove from the furnace lining.

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Acknowledgements

The authors would like to acknowledge the Virginia Tech Foundry Institute for Research and Education for providing the necessary materials and equipment to produce the steel alloys, Virginia Tech graduate students Corinne Wells and Josh Adelmann for performing the scanning electron microscopy, Josh Adelmann and Adrian Davila for performing the Thermo-CalcTM analysis, and **g Zhao for performing the X-ray diffraction measurements. This paper is an invited submission to IJMC selected from presentations at the 74th World Foundry Congress, held October 16 to 20, 2022, in Busan, Korea, and has been expanded from the original presentation.

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Authors and Affiliations

  1. Materials Science and Engineering, Virginia Tech, 445 Old Turner Street, Blacksburg, VA, USA

    Alan P. Druschitz, Adam Seigler, Owen Hall, Liam Kluesener & Jacob Zippel

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  1. Alan P. Druschitz
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  2. Adam Seigler
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Correspondence to Alan P. Druschitz.

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This paper is an invited submission to IJMC selected from presentations at the 74th World Foundry Congress, held October 16–20, 2022, in Busan, Korea, and has been expanded from the original presentation.

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Druschitz, A.P., Seigler, A., Hall, O. et al. Cast Medium-Manganese FeMnAlSiC Steel. Inter Metalcast 17, 2413–2420 (2023). https://doi.org/10.1007/s40962-023-01000-1

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  • DOI: https://doi.org/10.1007/s40962-023-01000-1

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