Abstract:
Mg/ZK60 laminated composites were fabricated by accumulative roll-bonding at 300℃ using the pure Mg and ZK60 alloy. After the bonding rolling process, grains of the Mg layers and ZK60 layers are refined obviously. The grain size decreases slightly and the microstructure becomes more homogeneous with increasing of accumulative roll-bonding cycles. The thicknesses of both Mg layer and ZK60 layer decrease gradually with increasing of the accumulative roll-bonding(ARB) cycles. After two ARB cycles, an obvious wavy structure can be observed in the laminated Mg/ZK60 composite and both the Mg layer and ZK60 layer show typical basal plane texture with the 0001 plane slightly incline to rolling direction. The ultimate tensile strength and yield strength locate between the pure Mg and ZK60 alloy sheets. As similar as the tensile properties, the damping capability of Mg/ZK60 laminated composite is between Mg and ZK60 while the composite having similar damping behavior as that of ZK60 sheet at elevated temperature.