In this study, we utilized an innovative pathway to obtain exceptional resistance to the cavitation erosion–corrosion behavior by combining surface texturing with severe surface deformation. Severe surface deformation was carried out using stationary friction process (SFP) followed by micro-texturing through a micro-imprinting approach. The textured sample after processing (SFP+T) had erosion resistance that was 6–7 times greater than that of the as-cast sample under ultrasonic cavitation conditions. In addition, the SFP+T sample was able to sustain a similar trend in the erosion–corrosion medium as well. Furthermore, the flow field characteristics of textured and non-textured samples were investigated using numerical calculations in ANSYS-Fluent. The remarkable improvement in erosion–corrosion resistance was attributed to the finer grains and fluid flow distribution in the textured surface.