Microstructures and mechanical properties of Mg/Mg and Mg/Al/Mg laminated composites prepared via warm roll bonding

Laminated metal composites (LMCs) constructed using Mg and Al have good application potential in the aerospace industry because of their light weights. In this study, two types of LMCs (Mg/Mg and Mg/Al/Mg) with different reduction ratios were prepared via warm roll bonding. Investigations regarding the microstructure and composition of LMCs discovered refined grains in the Mg and Al layers with no intermetallic compounds at the interface. Moreover, tensile and three-point bending tests were conducted to investigate the mechanical properties of the LMCs. The tensile strengths of the two types of LMCs reached their peak values at 35% reduction ratio. The delamination mechanism in LMCs significantly improved the bending properties. However, this effect decreases with increasing reduction ratio.