Manufacturing method of magnesium-aluminum metal composite structure

The invention relates to a manufacturing method of a magnesium-aluminum metal composite structure. The manufacturing method comprises the steps that S1, a magnesium alloy plate is provided; s2, aluminum foils are subjected to ultrasonic consolidation on the upper surface and the lower surface of the magnesium alloy plate correspondingly, a magnesium-aluminum metal composite plate is obtained, and under the combined action of vertical loads and ultrasonic vibration, the aluminum foils and the magnesium alloy plate are compounded together through short-distance diffusion and mechanical occlusion; and S3, the magnesium-aluminum metal composite plate is subjected to superplastic gas bulging forming, the magnesium-aluminum metal composite structure is obtained, an interface reaction layer is formed between the aluminum foil and the magnesium alloy plate, and metallurgical bonding is achieved. The aluminum foil has good corrosion resistance, so that the prepared magnesium-aluminum metal composite structure also has