Predicting nucleation textures in interstitial-free steel
Combined effect of oriented nucleation theory and strain-induced boundary migration
J.F. Ochoa-Avendaño (TU Delft - Team Maria Santofimia Navarro)
C Bos (Tata Steel, TU Delft - Team Erik Offerman)
Leo A.I. Kestens (Universiteit Gent, TU Delft - Team Maria Santofimia Navarro)
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Abstract
The accuracy of simulated recrystallisation textures is essential for predicting the formability of steel sheets. In a continuum modelling approach, this texture can be effectively calculated in two stages: nucleation and growth. However, the precision of the final texture depends heavily on the accuracy of the nucleation texture simulation. This paper presents a nucleation texture model that combines the strain-induced boundary migration (SIBM) mechanism with a traditional oriented nucleation model. The results indicate that the SIBM mechanism promotes the nucleation of low-stored energy grains and enhances the nucleation texture compared to using the oriented nucleation model alone. The findings suggest that the accuracy of nucleation texture could be improved by setting a minimum stored energy threshold for grains that nucleate during the early stages of recrystallisation.
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