일반 방향성 전기강판의 고온소둔전 미세조직이 2 차 재결정에 미치는 영향 = Effects of Microstructure before High Temperature Annealing on Secondary Recrystallization in Conventional Grain-Oriented Electrical Steels

다국어 초록 (Multilingual Abstract)

The effects of microstructure before high temperature annealing on secondary recrystallization in conventional grain-oriented electrical steels are investigated. Before high temperature annealing, the cold rolled specimens were annealed at 600 and 850℃ for 200s in 25%H₂+75%N₂, in order to make the recovered and recrystallized microstructure, respectively. For the observation of grain size and precipitates, specimens were extracted at 700, 800, 900, 950 and 1000℃ during the heating step of high temperature annealing. For the recrystallized specimen before high temperature annealing, secondary recrystallization was nearly completed at 950℃ during high temperature annealing. However, in case of the recovered specimen, secondary recrystallization was formed at a higher temperature than 950℃. After high temperature annealing, better magnetic properties were obtained in the recovered specimen than in the recrystallized specimen.

목차 (Table of Contents)

• 1. 서론
• 2. 실험 방법
• 3. 실험 결과 및 고찰
• 미세조직
• 석출물 분석
• 집합조직분석
• 자기 특성
• 4. 결론