Effect of Rolling Parameters on Microstructure, Texture, and Mechanical Properties of Al/Mg/Al Laminated Composites

The effect of rolling parameters on microstructure, texture and mechanical properties of Al/Mg/Al laminated composites was investigated. The results showed that the development of microstructure through the thickness of Al and Mg layers was inhomogeneous. The surface layer of Al possessed the highest hardness, and it decreased as the measured position moved from the surface layer toward the interface of Al/Mg. At the center of Mg layer, the volume fraction of recrystallized grains increased with increasing rolling reduction and temperature, while the fully dynamic recrystallization occurred at the interface of Mg layer. The surface and center of Al layer exhibited stronger r-cube and γ-fiber shear textures compared to the interface layer. The tensile strength of the Al/Mg/Al laminated composites increased with increasing rolling reduction and decreasing rolling temperature, whereas the elongation decreased. The bonding strength increased with increasing rolling reduction. With increasing rolling temperature, the bonding strength increased to a maximum value at 450 °C and then decreased.