Self-brazing aluminum alloy layered composite material, manufacturing method and application

The invention discloses a self-brazing aluminum alloy layered composite material, a manufacturing method and application, and relates to the technical field of self-brazing aluminum alloys, a composite layer comprises a core layer and a self-brazing layer, the core layer comprises, by mass, 0.5%-1.5% of Si, 0.3%-1.0% of Mg, 0.1%-0.5% of Cu, 0.1%-0.5% of Mn + Cr, 0.05%-0.2% of Ti + Zr and the balance Fe, the corrosion resistance and mechanical strength of the material are improved through addition of manganese and chromium elements, and the balance Al and inevitable impurities are added; the mass ratio of Mn to Cr is 1 to 2, and the mass ratio of Ti to Zr is 1 to 1.5; the self-brazing layer is composed of Al-Si alloy powder and a rare earth element additive, the mass percentage of the rare earth element additive is 0.1%-0.5% of the total mass of the self-brazing layer, and the rare earth element additive improves the brazing performance and the oxidation resistance of the material and improves the stability of