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H. Buken, E. Kozeschnik:
"Recrystallization in Al- Mg alloys - A new modelling approach";
Keynote Lecture: Metaldeform 2017, Samara, Russland (invited); 2017-07-04 - 2017-07-07.

In conventional processing of structural metals, complex sequences of thermo-mechanical treatments are often carried out to achieve a microstructure with the desired mechanical-technological properties. In this process, physical mechanisms, such as, recrystallization and grain growth, can occur, which represent efficient mechanisms determining the resulting grain size and thus the strength and toughness of the final product. On one hand, Mg-alloyed Aluminum, Mg atoms can potentially retard recrystallization kinetics, since they exert a remarkable solute drag on the moving grain boundary, both, during recrystallization and grain growth. On the other hand, Mg atoms are also capable of accelerating recrystallization kinetics, due to their interaction with dislocations and the modified generation characteristics in the dislocation density evolution during deformation. In this contribution, we formulate a physical recrystallization model, which accounts for the solute drag impact of Mg in Al and the impact of Mg on the dislocation evolution. We test the model on numerous experiments on static recrystallization from literature, where excellent agreement is observed, both, qualitatively and quantitatively.