| Title |
Behavior of Carbide Precipitation during Overaging Treatment in Continuous Annealing of Low carbon Al - Killed Steel |
| Authors |
한봉희(B . H . Hahn); 박용범(Y . B . Park); 김성호(S . H . Kim) |
| 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. |