Effect of Micro-Alloying Elements of Ti, Nb and B on Recrystallization Behavior of Cold-Rolled Interstitial-Free Steel Sheets

Abstract:

The effect of micro-alloying elements of niobium and boron and titanium on recrystallization behavior is researched after the cold rolled IF steels are annealed at high temperature. The results show that there is high density dislocation in the cold rolled steel and the microstructure is fibrous tissue. The recrystallization grains appear when the cold steel annealed at 655 °C and then the grains grow up with the annealing temperature increased to 840 °C. The recrystallization temperature and time of B-Ti-IF steel is lower than that of Nb-Ti-IF and Ti-IF steels. The recrystallization activation energy of Nb-Ti-IF steel is 181.7KJ/mol which is 56.6KJ/mol larger than that of B-Ti-IF steel.

• Periodical: Materials Science Forum (Volume 753)
• Pages: 207-212
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.753.207
• Online since: March 2013
• Authors: Xin Li Song, Kun Peng, Ze Xi Yuan, W.W. Zhu, J. Jia, Z.J. Deng
• Keywords: Hardness, Micro-Alloy Element, Microstructure, Recrystallization

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