| Title |
Effect of Elongated Primary Grains on secondary Recrystallization in Boron Si - Fe |
| Authors |
이희균(H . G . Lee); 임호빈(H . B . Im) |
| Abstract |
Dependence of secondary recrystallization on primary recrystallized structure in Boron Si-Fe was investigated using heats containing 0.049%C (Alloy A) and 0.013% (Alloy B). Elongated grains in primary recrystallized structure were observed in samples cold rolled with 40 passes after normalizing above 1050℃ for 5 minutes for Alloy A and in samples normalized at 900℃ for 5 minutes for Alloy B. Samples which contain elongated grains in primary recrystallized structure experienced normal grain growth and developed no secondary recrystallization during final texture anneal. However, the elongated grains in primary recrystallized structure were completely eliminated and secondary recrystallization occurred in samples which were additional heat treated at 900℃ in N₂ atmosphere for a long time (72 hrs) at the hot band stage before cold rolling and texture annealing. |