J Mater Sci Technol ›› 2005, Vol. 21 ›› Issue (01): 21-24.

• Research Articles • Previous Articles     Next Articles

Carbon Diffusion in Hot Strips of Low Carbon Steel Produced by CSP Line under Different Thermal Histories

Hao YU, Hao REN, Yonglin KANG, Kelu WANG   

  1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China...
  • Received:1900-01-01 Revised:1900-01-01 Online:2005-01-28 Published:2009-10-10
  • Contact: Hao YU

Abstract: Two experiments were carried out on the same compact strip production (CSP) line, which differs in that one of them experienced γ→α→γ﹡thermal history. The differences in microstructure, precipitation, misorientation etc between two experiments were investigated by using scanning electron microscopy (SEM), transmission electron microscopy (TEM), electron back-scattered diffraction (EBSD) and positron annihilation technique (PAT). The carbon concentration in matrix is more inhomogeneous in the experiment than that withγ→α→γ﹡ thermal history. The specific precipitation characteristic in the experiment withoutγ→α→γ﹡ thermal history is discussed on the basis of different carbon diffusion behavior and interaction between dislocation and excess carbon.

Key words: Compact strip production, Microstructure, Precipitation, Carbon diffusion, Dislocation