Question

What is the driving force for recrystallization??(b) What is the driving force for grain growth?

Answer 1

The main driving force for recrystallization to occur is the stored energy during straining in the form of crystalline defects. In a region exempt of defects, surrounded by high angle boundaries, recrystallization proceeds by growth of this "nucleus" over the yet non-recrystallized matrix.

b)

The driving force for grain growth is the reduction in grain boundary energy as the total grain boundary area decreases.