Nb Microalloyed Steel of Grain Coarsening Law
With the process parameters and processing conditions in the mill, a systematic experimental research were conducted to Q345 steel containing niobium austenite grain growth law, and analysis the dissolution and precipitation behavior of Nb carbonitride. The results shows that Nb-microalloyed steel heated to 1180 ~ 1230 °C can significantly improve strength and toughness of steel and performance.
Yongbo Shao, Shuguang Hao, Yuping Luo, Jibo Xing and Zhiyong Liu
F. Liu and J. C. Zhang, "Nb Microalloyed Steel of Grain Coarsening Law", Applied Mechanics and Materials, Vols. 174-177, pp. 433-436, 2012