EFFECT OF GRAIN BOUNDARIES ON THE COLD ROLLING AND ANNEALING TEXTURES OF PURE IRON.

Abstract

During cold rolling, the neighborhood of initial grain boundaries in pure iron tends to become left brace 111 right brace regions with a high density of dislocations. In the course of subsequent annealing, preferential nucleation of left brace 111 right brace recrystallized grains takes place in the initial grain boundary region. Because of this effect, a smaller initial grain size results in a higher density of the left brace 111 right brace component in the annealing texture. The recrystallization process in which left brace 111 right brace nuclei grow into left brace 112 right brace and left brace 113 right brace matrices plays an important role in the left brace 111 right brace annealing texture formation.