Dynamic recrystallization

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Dynamic recrystallization (DRX) is a type of recrystallization process, found within the field of metallurgy. In dynamic recrystallization, as opposed to static recrystallization, the nucleation and growth of new grains occurs during deformation rather than afterwards as part of a separate heat treatment. Some authors have used the term 'partially-dynamic' to describe recrystallization that occurs during the cooling phase of a hot-working process. This emphasises the fact that the recrystallization is directly linked to the process in question, while acknowledging that there is no concurrent deformation.

In a stress-strain curve, the onset of dynamic recrystallization can be recognised by a distinct peak in the flow stress in hot working data, due to the softening effect of recrystallization.

DRX can occur in various forms, including:

• Geometric Dynamic Recrystallization
• Discontinuous dynamic recrystallization
• Continuous sub-grain rotation type dynamic recrystallization

[edit] Literature

• home.zcu.cz/~krocj, short explanation of DRX
• Constitutive relations to model the hot flow of commercial purity copper, chapter 6, doctoral thesis by Fernández and Gerardo, 2004