저탄소 Al-킬드강의 연속 어닐링에서 과시효 처리공정 중 탄화물 석출거동에 관한 연구 = Behavior of Carbide Precipitation during Overaging Treatment in Continuous Annealing of Low carbon Al-Killed Steel

다국어 초록 (Multilingual Abstract)

Precipitation behavior of carbides and texture change in a deep drawing sheet steel were studied by heat treating in a production scale continuous annealing line. Effect of annealing, quenching and overaging temperatures were investigated.
The site of carbides precipitated during overaging treatments became larger and the Vickers hardness number decreased as the temperatures for quenching and overaging increased. After a overaging treatment at 350℃, finely dispersed plate-like carbides were precipitated in the matrix, white at overaging treatments of 400℃, carbides precipitated along grain boundaries in a form of film and within matrix in a form of coarse particles.
The recrystallized structure showed a (111) type texture with the main component of (111) [1￣1￣2]. The(111) pole intensity and I_(222) I_(200) became higher as the annealing temperature increased within the α-phase region.

목차 (Table of Contents)

• 1. 서론
• 2. 실험방법
• 3. 결과 및 고찰
• 3.1 현미경 조직의 변화
• 3.2 경도변화
• 3.3 집합조직의 변화
• 4. 결론