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H. Buken, S. Zamberger, E. Kozeschnik:
"A model for the influence of micro-alloying elements on static recrystallization of austenite";
Talk: 6th International Conference on Recrystallization and Grain Growth, Pittsburgh, USA; 2016-07-17 - 2016-07-21; in: "Proceedings of the 6th International Conference on Recrystallization and Grain Growth (ReX&GG 2016)", E. Holm, S. Farjami, P. Manohar, G. Rohrer, A Rollett, D. Srolovitz, H. Weiland (ed.); Wiley, (2017), ISBN: 978-1-119-32879-7; 113 - 118.

After and during hot rolling of steel, recrystallization can occur and impact severely on the resulting product properties. Recrystallization kinetics are, in particular, influenced by the addition of micro-alloying elements. On the one hand, micro-alloying elements in solid solution, such as Nb, Ti and V, exert a solute drag effect, which reduces the mobility of the grain boundaries. On the other hand, micro-alloying elements form precipitates, which exert a particle pinning force on the grain boundaries. In the present work, we formulate a physically-based recrystallization model with grain boundary mobilities that account simultaneously for the solute drag and Zener drag impact of Nb, Ti and V. We verify the model on numerous experiments on static recrystallization from literature, where good agreement is observed with a single set of simulation input parameters.

Recrystallization, Micro-alloyed steel, Precipitation, Solute drag