Effect of manganese on the annealing texture and strain ratio of low-carbon steels

Abstract

A correlation between the plastic strain ratio, or γ value, and the manganese content of laboratory-prepared, low-carbon steels has been established. The\(\bar r\) value decreases consistently when manganese is increased from 0.05 to 0.56 pct. Excellent\(\bar r\) values are associated with manganese contents of 0.1 pct or less. The desirable (111) fiber texture in the low-manganese steels is obtained through recrystallization without appreciable grain growth. It is believed that a very low content of manganese in the steel, or its consequential effects in connection with nonmetallic impurities, may have influenced significantly the characteristics of recovery, hence the nucleation of recrystallized grains, of the various deformation texture components. X-ray line sharpening of several reflections during the early stages of annealing appears to be consistent with this interpretation.