Ti添加低炭素冷延鋼板の再結晶挙動に及ぼす固溶Cの影響(相変態・材料組織)  [in Japanese] Influence of Solute C on Recrystallization Behavior in Ti Added Low Carbon Cold Rolled Sheet Steel(Transformations and Microstructures)  [in Japanese]

Recovery and recrystallization behavior of the Ti added low carbon steel sheets (0.0096mass%C-0.097mass%Ti) with two different states of carbon atoms were investigated. States of carbon atoms in the hot rolled sheets were characterized by 3-dimensional atom probe (3D-AP) analysis. The recovery was delayed in the sample containing solute carbon. It is considered that this delay arised from the existence of C-Mn or C-Ti dipole. After 85% cold rolling and annealing at 800℃, the specimen without solute carbon showed {111}<112> recrystallization texture and polygonal ferrite. In contrast, the specimen contained solute carbon showed {111}<110> recrystallization texture and pancake shaped ferrite microstructure. It is considered that the difference of recovery behavior affects development of the recrystallization texture.