Study on CCT Curve and Microstructure Evolution of HRB500E

Autor: Tian, Peng, Zhong, Zhi Yong, Bai, Rui Guo, Zhang, Xing Li, Wang, Quan Li, Gao, Hai, Zhang, Jun Fen
Zdroj: Applied Mechanics and Materials; December 2013, Vol. 470 Issue: 1 p699-702, 4p
Abstrakt: The microstructure evolution and hardness change were studied for vanadium containing high strength seismic rebar HRB500E at different cooling rates. The experimental results showed that bainite and martensite gradual emerged with the increasing cooling rate and resulted in an increasing micro-hardness. The cooling rate should be controlled at 0.5°C/s to 7°C/s to ensure good performances of steel rebar. The CCT curve of HRB500E measured with the inflation method and metallographic-Hardness method could provide the theoretical basis for controlled cooling process.
Databáze: Supplemental Index