The crystallographic relationship of molybdenum textures after hot rolling and recrystallization

Using the method of orientation microscopy, based on electron backscatter diffraction (EBSD), the texture of molybdenum sheet, produced by hot rolling at 1100 degrees C with a total strain exceeding 90%, was characterized. Throughout its whole thickness, the molybdenum texture consisted of a set of stable orientations: (001)[110], {112}< 110 >, {111}< 112 >, {111}< 110 >. During recrystallization at 1200 degrees C {001}< 110 > orientation became weaker, while the other orientations enhanced. The orientations of recrystallized grains were related with the orientations of deformed grains by rotations at defined angles around their axes < 110 >. The formation of recrystallization texture can be explained by the migration of CSL boundaries of Sigma 9 type and/or the formation of recrystallization nuclei at the Sigma 3 and Sigma 11 CSL boundaries, which was preceded by the appearance of CSL misorientations between the components of deformed texture. (C) 2016 Elsevier Ltd. All rights reserved.