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The Mechanical Properties of Ductile Iron at Intermediate Temperatures: The Effect of Silicon Content and Pearlite Fraction

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Abstract

The use of ductile irons in thermo-mechanically loaded components is increasing, necessitating more knowledge of material properties at intermediate temperatures. A study of the mechanical properties of ductile irons at intermediate temperatures was conducted, investigating the effect of different pearlite fractions along with silicon content tests in fully ferritic microstructures. The effect of the pearlite fraction and silicon content on tensile and yield strength was measured at different temperatures, from room temperature to 450 °C. Models of tensile and yield strengths were developed based on those measurements. These resulting regression models were tested with data from the literature. Such models can be applied in various design tools, such as FEM calculations and in the optimisation of thermally and cyclic loaded ductile iron components.

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Authors and Affiliations

  1. Wartsila Oyj, Järvikatu 2-4, 6500, Vaasa, Finland

    Jarkko Laine & J. Vaara

  2. Department of Mechanical Engineering, Aalto University, Espoo, Finland

    K. Jalava, K. Soivio & J. Orkas

  3. Materials and Mechanical Engineering, University of Oulu, Oulu, Finland

    T. Frondelius

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  1. Jarkko Laine
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  2. K. Jalava
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  3. J. Vaara
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  4. K. Soivio
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  5. T. Frondelius
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  6. J. Orkas
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Correspondence to Jarkko Laine.

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40962_2020_473_MOESM1_ESM.xlsx

Appendix 1: Mechanical values of different pearlite fractions and calculated values. Appendix 2: Mechanical values of different silicon contents (0% pearlite) and calculated values (XLSX 18 kb)

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Laine, J., Jalava, K., Vaara, J. et al. The Mechanical Properties of Ductile Iron at Intermediate Temperatures: The Effect of Silicon Content and Pearlite Fraction. Inter Metalcast 15, 538–547 (2021). https://doi.org/10.1007/s40962-020-00473-8

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  • DOI: https://doi.org/10.1007/s40962-020-00473-8

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