<p>This study investigates the effects of solution and subsequent aging treatments on the mechanical properties and corrosion behavior of a multi-directionally compressed ZK60 magnesium alloy, previously subjected to 9 passes of deformation (20% reduction per pass). The results demonstrate that the T4 treatment effectively dissolves a significant fraction of the secondary phases into the matrix. This homogenization substantially reduces the propensity for micro-galvanic corrosion, enhancing the charge transfer resistance of the surface corrosion product film and leading to a markedly decreased corrosion rate. However, this improvement in corrosion resistance is accompanied by a significant decrease in the alloy's yield strength, although the ultimate compressive strength remains largely unchanged and the compressive ductility increases to 26%. Subsequent T6 treatment promotes the re-precipitation of a high density of fine secondary phases within the grains. While this successfully recovers the yield strength and maintains high compressive ductility, it reintroduces galvanic couples, thereby accelerating the corrosion rate compared to the solution-treated state.</p>