Abstract:Two kinds of alloys with the nominal composition Zr-1Nb-0.1Fe-0.05V and Zr-1Nb-0.1Fe (wt%) were smelted by vacuum arc re-melting and prepared into sheet samples. Tensile test and static autoclave corrosion test methods were used to study the tensile properties of the alloy sheet samples in the rolling direction and the transverse direction at room temperature and high temperature (380 ℃), and the corrosion resistance in 500 ℃ water vapor and 400 ℃/10.3 MPa water vapor. The second phase particles and tensile fracture morphology of the alloys were observed by scanning electron microscope (SEM). The results showed that the addition of 0.05 wt% V did not improve the tensile strength of Zr-1Nb-0.1Fe alloy at both room temperature and high temperature (380 °C) obviously. The tensile strength and fracture morphology are tenacity, and the fracture mechanism is microporous aggregate fracture. The addition of V refins the microstructure grains and second phase particles, and improves the corrosion resistance of the alloy in 500 °C water vapor and 400 °C/10.3 MPa water vapor.