IDENTIFICATION OF PHASE TRANSFORMATION MODEL FOR THE SIMULATION OF CONTROLLED COOLING OF BAINITIC STEEL TUBES
Journal Title: Prace Instytutu Metalurgii Żelaza - Year 2018, Vol 70, Issue 4
Abstract
JMAK (Johnson-Mehl-Avrami-Kolmogorov) equation was adapted to simulation of phase transformations during cooling of bainitic steel tubes. The model was identified on the basis of the results obtained from the JMatPro software. Numerical tests for various cooling schedules showed model’s capability to predict a volume fraction of microstructure constituents of the tubes. The model was implemented into FE code for the simulation of tubes cooling. For the sake of the model capabilities, three cooling methods were considered: (i) free cooling in the air, (ii) cooling with the pressurised air, (iii) cooling with the water mist. Both symmetrical and asymmetrical cooling conditions were considered. The volume fractions of the tube’s microstructure constituents were calculated for each cooling conditions.
Authors and Affiliations
Roman Kuziak, Krzysztof Radwański, Ryszard Molenda, Artur Mazur, Józef Broll, Maciej Pietrzyk
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