FUNDAMENTAL ASPECT OF TEXTURE FORMATION IN LOW-CARBON STEEL

The mechanism of the texture formation in low carbon steels is not fully understood as yet. To clarify this, a series of systematic investigations has been made. Summarizing these results and comparing these with those of other investigations, possible mechanisms of texture formation are discussed. In polycrystalline iron, deformation and recrystallization in grain boundary regions play the most important role in the texture formation. In this respect, results obtained on single and bi-crystals do not provide much informations. In polycrystals, crystal rotation occurs during rolling along different paths from that observed in single crystals, affected by grain boundary constraints significantly. Approaches to the stable end orientation seems to be closely related with the development of the stable dislocation substractures. The development of the rolling texture is therefore strongly affected by the metallurgical factors that influence the evolution of the dislocation substructures. {111) recrystallized grains seem to be formed from the grain boundary regions of the same orientation through the subgrain growth mechanism.