Strengthening Mechanisms of Vanadium Micro-Alloyed Reinforcing Steel Bar
High strength vanadium micro-alloyed steel with yield strength of 600MPa has been developed based on commercial 20MnSi steel bar. Experimental methods, such as OM, SEM and TEM, were used to study the experimental steels. Compared with 20MnSi, steel 20MnSiV boasts much finer microstructure, and large numbers of nanometer precipitates exist in the specimens of 20MnSiV. Analysis shows that strength of 20MnSiV dramatically increases through grain refinement strengthening and precipitation hardening of nanometer VCN particles.
L. J. Li et al., "Strengthening Mechanisms of Vanadium Micro-Alloyed Reinforcing Steel Bar", Applied Mechanics and Materials, Vols. 130-134, pp. 942-945, 2012