The corrosion resisting property of Mg-Li alloy is quite bad and the mechanical property is also bad, author prepared the Mg-9Li-lZn alloy/Al cladding plate using cold-rolling. Author studied the technology of cold-rolling and the annealing system of Mg-9Li-lZn alloy/Al cladding plate, and analyzed the recrystallization behavior of Mg-9Li-lZn sheet for different annealing system, and tested the mechanical properties. The results showed that the critical reduction of Mg-9Li-lZn alloy/Al cladding plate is about 50%, and the best reduction is about 60～65%. After annealing a phases can obviously spheroidize, and the complete recrystallization occurs after annealing at 300°C for 3h, and at the same time the microstructure and properties of the composite plate are the best. The density of Mg-9Li-lZn alloy/Al cladding plate is 1.6～1.7g/cm~3, it still has the character of lightness, at the same time the corrosion resisting property can rise largely.
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