COINCIDENCE GRAIN-BOUNDARY AND ROLE OF PRIMARY RECRYSTALLIZED GRAIN-GROWTH ON SECONDARY RECRYSTALLIZATION TEXTURE EVOLUTION IN FE-3-PERCENT-SI ALLOY

Secondary recrystallization behavior in the presence of AlN in Fe-3%Si alloy was investigated with special reference to the influence of primary recrystallized grain growth on secondary recrystallization texture. The more dominant grain growth was marked by the evolution of {110}[001] secondary recrystallized grains in the higher temperature range. In the case of smaller primary recrystallized grains, the {110}[227] secondary recrystallized grains were mainly evolved on annealing at the lower temperature range. The frequency of SIGMA9 coincidence boundaries in relation to the {110}[001] texture component was higher than that of SIGMA5 coincidence boundaries in relation to {110}[227] component. The mechanism of these evolutions of secondary recrystallization texture can be explained by the assumption that the SIGMA5 coincidence boundaries are more mobile than the SIGMA9 coincidence boundaries in the lower temperature range. The primary recrystallized grain growth is considered to have a role in determining what should be the secondary recrystallization temperature.