Only deformation is higher the criticaldeformation can the dynamic recrystallization be occurred.
只有变形量高于临界变形量时才能发生动态再结晶。
2
The result showed hot sizing was the main factor to cause criticaldeformation, to make mixed grain and coarse grain widmanstatten appear in parting face.
The primary driving force of coarse grain formation in the criticaldeformation region is the energy difference of distortion between both sides of grain boundaries.