Abstract: In the field of material science, aluminum metal composites (AMC) have attracted a lot of attention. This study, the structural, mechanical, and corrosion properties of Cu, Zn, and Al multilayered composites fabricated through cross accumulative roll bonding (CARB) were investigated. Structural analysis revealed a reduction in Cu matrix crystallite size to approximately 50 nm after the ninth CARB cycle, accompanied by the appearance of plastic instability and shear bands from the third cycle onwards. Tensile strength peaked at the third cycle, reaching about 330 MPa, while fracture toughness also followed a similar trend, with a maximum of approximately 31 MPa.m1/2 at the third cycle. Wear mechanisms shifted with increasing cycles, balancing abrasion and delamination wear. Moreover, increasing CARB cycles led to the accommodation of Al and Zn layers towards the surface, resulting in decreased corrosion resistance. To address this, diamond-like carbon (DLC) coatings were applied using the plasma ion immersion method, significantly enhancing corrosion resistance. Investigations into DLCcoated samples showed a notable reduction in corrosion current density and an increase in charge transfer resistance, indicative of improved corrosion resistance in a 3.5 wt.% NaCl solution. Overall, the study highlights the effectiveness of DLC coatings in improving the mechanical and corrosion properties of multilayered metal composites.