Explanation

Above the recrystallization temperature, with the increase of deformation, the dislocation density in the metallic materials continues to increase, and the internal stored energy also continues to increase. When the deformation reaches a certain degree, dynamic recfystallization will occur, which will reduce the dislocation density and the deformation resistance of materials until all dynamic recfystallization occurs and the stress reaches a stable value. The characteristics of dynamic recfystallization are as follows: critical deformation and high deformation temperature can be achieved; Dynamic recfystallization tends to nucleate at grain boundary and sub grain boundary; The time required for dynamic recfystallization decreases with increasing temperature.

Classification