Study on Preparation of High Strength Corrosion Resistant Steel Bar by Cu-Cr Alloying

The chemical composition(including the content of Cu and Cr)was controlled, and six steel bar samples were prepared using converter smelting, LF refining, Cu-Cr alloying, RH refining, continuous casting and rolling process parameters, and mechanical properties and corrosion resistance were tested.The results show that the yield strength and tensile strength of the samples prepared by Cu-Cr alloying are higher than 600 MPa and 700 MPa, respectively, and the average corrosion rate and average corrosion depth of the 5 d cycle samples are lower than 4.0 g/(m²·h)and 35.0μm respectively.The comprehensive index of the test sample is significantly better than the unalloyed ones.