Effect on the Vanadium Addition on the Microstructure and Property of HRB 400 Steel Bar

Wei-Ming QIU, Ji-Guang XIAO, Jun GUO, Xue-Rong WEN, Zhi-Peng LI

Abstract


High strength vanadium micro-alloyed steel with yield strength of 600MPa has been developed based on commercial HRB400 steel bar. Experimental methods, such as OM, SEM and TEM, were used to study the experimental steels. Compared with HRB400, HRB400 steel with vanadium addition boasts much finer microstructure, and large numbers of nanometer precipitates exist in the specimens of HRB400 steel with vanadium addition. Analysis shows that strength of HRB400 steel with vanadium addition dramatically increases through grain refinement strengthening and precipitation hardening of nanometer VCN particles.

Keywords


Bar steel, Vanadium micro-alloyed technology, Grain refinement, Precipitation hardening


DOI
10.12783/dtmse/icmsea/mce2017/10825

Refbacks

  • There are currently no refbacks.