Effects of different solution processes on microstructure and properties of 1070A/2024 cast and rolled com-posite plates were investigated.The microstructure of plates was observed and analyzed by metallographic and scanning electron microscopy and energy spectrum analysis,and the performance tests were carried out by tensile and shearing test.The results indicate that the structure is dominated by Al2Cu after solution treatment,and the optimal heat treat-ment process is annealing at 360 ℃ for 2 h+solid solution at 495 ℃ for 1 h,where the shear strength,tensile strength,yield strength and elongation of the composite plate are 147.83 MPa,321.41 MPa,373.92 MPa and 28.34％,respectively.
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