During recrystallization, the boundaries between the new strain-free grains and the original deformed grains are acted on by a force ΔG /V where, in this case, ΔG is due to the difference in dislocation strain energy between the two grains.

During recrystallization, the boundaries between the new strain-free grains and the original deformed grains are acted on by a force ΔG /V where, in this case, ΔG is due to the difference in dislocation strain energy between the two grains. Correct Answer True

Consider a dislocation- free recrystallized grain expanding into the heavily deformed surroundings. In this case the total grain-boundary area is increasing, therefore the driving force for recrystallization must be greater than the opposing boundary tension forces. Such forces are greatest when the new grain is smallest, and the effect is therefore important in the early stages of recrystallization.