1988 Volume 52 Issue 12 Pages 1212-1220
Textures of warm rolled low carbon and Ti-bearing ultra low carbon steel sheets have been investigated. The main orientation of the recrystallization texture of the low carbon steel sheet is near {114}⟨110⟩, while that of the Ti-bearing ultra low carbon steel sheet is near ND\varparallel⟨111⟩.
To explain the different formation of texture between the steels, their recrystallization behavior has been studied in detail. The study shows that the low carbon steel preferentially recrystallizes from near ND\varparallel⟨100⟩ grains, and the Ti-bearing steel from near ND\varparallel⟨111⟩ grains. The difference in the preferential nucleation site relates with the recrystallization retarding effect.
Microtextural measurements by electron channeling pattern reveals that the orientation of grains recrystallized in the vicinity of grain boundaries between two near ND\varparallel⟨111⟩ grains greatly differs between the two steel. This difference yields by carbon in solution. A further study using transmission electron microscopy and selected area electron diffraction shows that in the presence of carbon in solution, {114}⟨110⟩-{112}⟨110⟩ orientations are formed in the vicinity of grain boundaries by some unique crystal rotation different from that occurring in the matrix. The occurrence of the unique crystal rotation is explained by the variation of active slip systems due to the interaction between dislocations and the interstitial atoms by work hardening.
It is concluded that the essential factors affecting the formation of the recrystallization texture of warm rolled sheets are carbon in solution and the retarding effect on recrystallization.
