ժҪ Hot rolling, cold rolling and continuous annealing processes of Ti bearing and Ti+Nb stabilized ultra low carbon bake hardening(ULC-BH) steels were experimentally studied. The microstructure and texture evolution, as well as the morphology, size and distribution of the second phase precipitates during the hot rolling, cold rolling and continuous annealing were also analyzed. The results showed that the size of NbC precipitates in Ti+Nb stabilized ULC-BH steel was smaller than that of TiC precipitates in Ti bearing ULC-BH steel, this caused the average grain size of Ti+Nb stabilized ULC-BH steel to be finer than that of Ti bearing ULC-BH steel, for the yield strength, the former was higher than the latter, but for the r value which reflecting the deep drawing performance, the former was lower than the latter.
Abstract��Hot rolling, cold rolling and continuous annealing processes of Ti bearing and Ti+Nb stabilized ultra low carbon bake hardening(ULC-BH) steels were experimentally studied. The microstructure and texture evolution, as well as the morphology, size and distribution of the second phase precipitates during the hot rolling, cold rolling and continuous annealing were also analyzed. The results showed that the size of NbC precipitates in Ti+Nb stabilized ULC-BH steel was smaller than that of TiC precipitates in Ti bearing ULC-BH steel, this caused the average grain size of Ti+Nb stabilized ULC-BH steel to be finer than that of Ti bearing ULC-BH steel, for the yield strength, the former was higher than the latter, but for the r value which reflecting the deep drawing performance, the former was lower than the latter.
CHEN Ji-ping KANG Yong-lin HAO Ying-min LIU Guang-ming XIONG Ai-ming. Microstructure and Properties of Ti and Ti+Nb Ultra-Low Carbon Bake Hardening Steels[J]. �й������ڿ���, 2009, 16(6): 33-40.
CHEN Ji-ping KANG Yong-lin HAO Ying-min LIU Guang-ming XIONG Ai-ming. Microstructure and Properties of Ti and Ti+Nb Ultra-Low Carbon Bake Hardening Steels. Chinese Journal of Iron and Steel, 2009, 16(6): 33-40.
2009, Vol. 16 
