Abstract
In sand casting of metallic alloys, the cooling rate is a key parameter that affects the microstructure and the appearance of defects and residual stresses in the end cast components. In this work, a numerical model was developed to simulate the cooling of a duplex stainless steel casting on a furan-bonded sand mold. The heat transfer coefficient (HTC) as a function of temperature was determined by an inverse method. A good agreement between experimental and numerical cooling curves was achieved, showing the importance of estimating HTC as a function of temperature. On the basis of these results, it is possible to calculate thermal residual stresses and model the microstructure of duplex stainless steel castings with complex geometries.
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Acknowledgements
We acknowledge the financial support of this work by the Hungarian State and the European Union under the EFOP-3.6.1-16-2016-00010 project and the Hungarian-Portuguese bilateral Scientific and Technological (TÉT_16-1-2016-0097) project/Project 3883, Fundação para a Ciência e Tecnologia (FCT—Portugal) and Nemzeti Kutatási, Fejlesztési és Innovációs Hivatal (NKFIH—Hungary).
The authors also acknowledge FERESPE—Fundição Portuguesa de Ferro e Aço (Portugal) for providing the material and technical support.
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Sousa, R.O., Felde, I., Ferreira, P.J., Deus, A.M., Ribeiro, L.M.M. (2019). Inverse Methodology for Estimating the Heat Transfer Coefficient in a Duplex Stainless Steel Casting. In: Silva, L. (eds) Materials Design and Applications II. Advanced Structured Materials, vol 98. Springer, Cham. https://doi.org/10.1007/978-3-030-02257-0_5
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DOI: https://doi.org/10.1007/978-3-030-02257-0_5
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