Statistical analysis of the microstructure between dynamic and static recovery

The warm rolling process gives rise to a recrystallization texture different than that obtained after cold rolling. This phenomenon is a product of the thermally activated recovery process. Static recovery leads to the development of γ fiber in recrystallization texture, on the other hand, dynamic recovery leads to the development of <001> fiber in recrystallization texture, i.e., the properties of the final product will not be the same.
Electron backscatter diffraction (EBSD) is a technique that allows for obtaining statistically representative results and can offer a quantitative analysis of the development of the microstructure. The present work studies the behavior of local misorientations (misorientation gradient) in (sub)-the structure of three stored energy states of Interstitial Free Steel (IF Steel): Dynamic Recovery (80 % warm rolling reduction at 550 °C), cold rolling (80% reduction), and static recovery (80% reduction at 600°C). The misorientation gradient of <111> //ND and <001> //ND grains with 20 degrees of deviation and all deformed grains were analyzed in detail. It was observed that there is a difference in the misorientation gradient in the displacement of higher values of misorientation gradient for <111>//ND grains in relation to the <001> //ND grains, this is evidenced by a statistical point of view the difference in the stored energy of static and dynamic recovery.