Fe-V alloysFe-V alloys are widely used in the metallurgical industry because of their excellent mechanical propertiesMechanical properties. As a green and short process preparation process, molten saltMolten salt electro-deoxidation can be used for simple and efficient preparation of simple substances and alloys.In this study, Fe3O4 and V2O5 were used as raw materials. In a temperatureTemperature range of 600 ~1000 ℃, the thermodynamic analysisThermodynamic analysis of Fe-V alloysFe-V alloys prepared by electro-deoxidation process of molten saltMolten salt was carried out to clarify the reaction process. The results show that Fe3O4 and V2O5 are reduced step by step to produce Fe and V. With the progressive reduction of V2O5, the removed O2− will affect the remaining V2O5 that is not completely reduced, and react with Ca2+ in molten saltMolten salt to produce CaV2O6. Therefore, the reduction process of V component goes through CaV2O6/V2O5 → VO2 → V2O3. The subsequent processMolten salt electro-deoxidation process is CaFe3O5/Fe3O4 → FeO → Fe, and the final process is V2O3 → VO → V, finally forming Fe-V alloys.