Coupled multiscale and multiphysical analysis of hot steel strip mill and microstructure formation during water cooling
Ilmola, Joonas; Pohjonen, Aarne; Seppälä, Oskari; Leinonen, Olli; Larkiola, Jari; Jokisaari, Juha; Putaansuu, Eero; Lehtikangas, Pasi (2018-09-16)
Ilmola, J., Pohjonen, A., Seppälä, O., Leinonen, O., Larkiola, J., Jokisaari, J., Putaansuu, E., Lehtikangas, P. (2018) Coupled multiscale and multiphysical analysis of hot steel strip mill and microstructure formation during water cooling. Procedia Manufacturing, 15, 65-71. doi:10.1016/j.promfg.2018.07.171
© 2018 The Author(s). Published by Elsevier B.V. under a Creative Commons license.
https://creativecommons.org/licenses/by-nc-nd/4.0/
https://urn.fi/URN:NBN:fi-fe2018102538702
Tiivistelmä
Abstract
In order to study the coupled effect of rolling deformation, heat transfer and water cooling on microstructure formation of a steel strip, a multiscale and multiphysical FE-model is developed. The deformation state and temperature distribution of the steel strip after the last rolling pass are required to calculate the final microstructure. The sub-model predicting final microstructure on the steel strip after accelerated water cooling is implemented numerically. Final phase fractions are calculated with the Johnson-Mehl-Avrami-Kolmogorov equation for different parts of the object, taking into account non-uniform temperature distribution.
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