Abstract Scope |
Nanostructured metallic multilayers (NMMs) offer great opportunity to simultaneously improve wear and corrosion resistance of metals. In the present work, the wear, corrosion and tribocorrosion resistance of nanostructured metallic multilayers (NMMs) of Al/X (X= Mg, Cu, and Ti) were evaluated through experiments, finite element simulations, and density functional theory calculations. Transmission electron microscopy of deformed and degraded sample surfaces showed characteristic different deformation and degradation mode of all samples, governed by the synergistic effects of the mechanical and corrosion properties of the constituting materials. A finite element based computational model was developed to study the effects of constituting material on the material loss rate under various external mechanical and chemical loads. Finally, density functional calculations provide further insight on the material selection and design criteria for metallic multilayers toward enhanced performance under extreme environment. |