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Research on Solution Strengthened Ferritic Ductile Iron (SSFDI) Structure and Properties Using Different Treatment and Inoculation Materials

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Abstract

A market review of solution strengthened ferritic ductile iron (SSFDI or SSF) is provided as a backdrop for research work conducted by Elkem over the past 5 years. This research included trials that were specifically designed and conducted on SSF materials to better understand how these irons behave when varying magnesium ferrosilicon (MgFeSi) and inoculating materials are used. During this research, three extensive trials were conducted during which 20 treatment ladles were made to study the effect of five different MgFeSi alloys, nine different types of inoculants, and two cover materials. In addition, the influence of separate antimony (Sb) additions made during inoculation was tested to see if this element enhanced the structure and reduced the risk of forming chunky graphite. The results of this research demonstrated the effect of these variations on the thermal analysis, microstructure, mechanical properties, and shrinkage tendency with emphasis on some of the differences between regular and SSF ductile irons.

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Acknowledgements

The authors would like to thank John Crane for his extensive efforts and assistance with editing the paper and Bente Kroka for her contribution and help with evaluating the microstructure and shrinkage tendency.

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Authors and Affiliations

  1. ELKEM Foundry Products Division, Ålvik, Norway

    C. Hartung, Eivind G. Hoel & Emmanuelle Ott

  2. ELKEM Metals Inc, Coraopolis, USA

    R. Logan

  3. ELKEM Limited, Sheffield, UK

    Andy Plowman & David Wilkinson

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  1. C. Hartung
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  2. R. Logan
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  3. Andy Plowman
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  4. David Wilkinson
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  5. Eivind G. Hoel
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  6. Emmanuelle Ott
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Correspondence to R. Logan.

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Hartung, C., Logan, R., Plowman, A. et al. Research on Solution Strengthened Ferritic Ductile Iron (SSFDI) Structure and Properties Using Different Treatment and Inoculation Materials. Inter Metalcast 14, 1195–1209 (2020). https://doi.org/10.1007/s40962-020-00469-4

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  • DOI: https://doi.org/10.1007/s40962-020-00469-4

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