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The effect of cooling rate on the solidification and microstructure evolution in duplex stainless steel

A DSC study

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Abstract

The effects of the cooling rate on the solidification and microstructure evolution in the duplex stainless steel SAF 2205 was studied using DSC and light microscopy. A ferritoscope was used to measure the ferrite content. It was revealed that the cooling rate has an influence on the δ-ferrite nucleation temperature and the width of the solidification interval. Moreover, with an increase in cooling rate, the content of δ-ferrite increases, while the quantity of austenite in the ferrite matrix decreases and its morphology changes to acicular. A two-cycle DSC experiment made possible a more accurate interpretation of the collected data.

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Acknowledgements

The authors would like to acknowledge Acroni d.o.o., Jesenice, Slovenia, for the supply of the steel. The study was also supported by the Slovenian Research Agency (Pr.No. P2-0050).

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Authors and Affiliations

  1. Institute of Metals and Technology, Ljubljana, Slovenia

    Darja Steiner Petrovič

  2. Acroni, d.o.o, Jesenice, Slovenia

    Miran Pirnat

  3. Faculty of Natural Sciences and Engineering, University of Ljubljana, Ljubljana, Slovenia

    Grega Klančnik, Primož Mrvar & Jožef Medved

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  1. Darja Steiner Petrovič
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  2. Miran Pirnat
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  3. Grega Klančnik
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  4. Primož Mrvar
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  5. Jožef Medved
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Correspondence to Darja Steiner Petrovič.

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Steiner Petrovič, D., Pirnat, M., Klančnik, G. et al. The effect of cooling rate on the solidification and microstructure evolution in duplex stainless steel. J Therm Anal Calorim 109, 1185–1191 (2012). https://doi.org/10.1007/s10973-012-2370-y

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  • DOI: https://doi.org/10.1007/s10973-012-2370-y

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