In the present work, the influence of Mg on recrystallization kinetics in Al is analyzed by computer simulation. A comprehensive state parameter-based microstructure model is developed, which describes recrystallization in terms of nucleation and growth. The mechanism of solute drag is fully incorporated, thus accounting for the decrease of grain boundary mobility in the presence of impurity atoms. On the basis of the present approach, the solute binding energy between Mg atoms and grain boundaries is assessed and compared to experimentally measured values. Furthermore, the influence of Mg on dislocation production during strain hardening is modeled. The simulations of the composition and temperature-dependent recrystallization kinetics are verified on experimental studies where excellent agreement is achieved. Both simulation and experiment show that increasing Mg content first decelerates and, later on, accelerates recrystallization kinetics.

在目前的工作中，通过计算机模拟分析了镁对铝中再结晶动力学的影响。建立了一个基于状态参数的综合微观结构模型，该模型根据成核和生长描述了再结晶。溶质阻力的机制被完全纳入，因此可以解释存在杂质原子时晶界迁移率的降低。在本方法的基础上，评估了Mg原子和晶界之间的溶质结合能，并将其与实验测量值进行了比较。此外，模拟了镁对应变硬化过程中位错产生的影响。在实验研究中验证了组成和温度依赖性重结晶动力学的模拟，并获得了极好的一致性。