The effect of manganese and sulfur on the development of orientation (110) [001]‐oriented low‐alloy iron

摘要

An investigation was made to determine the role of manganese and sulfur concentration on the development of (110) [001] orientation in low‐alloy iron specimens by primary recrystallization and normal grain growth. Fifteen heats, containing nominally 0.8% Si and 0.6% Cr with varying Mn and S contents, were used for the study, with three‐stage processing to 0.15 mm thick strip. The manganese content was varied between 0 and 0.15% with nominal sulfur contents of 0.001, 0.006, and 0.012%. Torque and magnetic properties, as well as X‐ray pole figures, were used to evaluate the orientation after final annealing. The low‐sulfur alloys (0.001% S) did not develop the best (110) [001] orientations. Those specimens containing the higher sulfur concentrations (0.012% were poorly oriented, except for one specimen which contained essentially zero Mn (≪0.01%). All the specimens with nominal 0.006% S content developed strong (110) [001] textures with B10 values of up to 1.93 T and 60 Hz core losses at 1.7T as low as 1.5 W/kg.