Evolution of Heterogeneous Deformation Microstructures during Cold Rolling of Poly-crystalline Ti-added Ultra Low Carbon Steel

Deformation microstructures developed by cold-rolling in Ti-added ultra low carbon steel have been investigated by the same site analyses for dislocation substructures and crystal orientation by employing the techniques of SEM-AsB and SEM-EBSD. Particular attention has been paid on the relationship between the characteristics of deformation microstructures and preferred crystallographic orientations after cold-rolling. Moreover, correlation between the formation of newly observed fine grains around grain boundaries and preferred orientations was also examined, taking into consideration the grain boundary characteristics.