A relationship was established between the recrystallized grain size and the Zener–Hollomon parameter for a wrought Mg alloy using hot compression tests. Above a critical Zener–Hollomon parameter value, twinning influences the dynamic recrystallization process, resulting in a more effective grain refinement, which was manifested in a significant change in the slope of the relationship between  Zener–Hollomon parameter and recrystallized grain size. The compression tests were performed along the through-thickness and rolling directions of the plate to study the orientation dependency of the dynamic recrystallization process.

Influence of Twinning on the Grain Refinement during High-Temperature Deformation in a Magnesium Alloy. Z.Yu, H.Choo: Scripta Materialia, 2011, 64[5], 434-7