The application of compound parts of Al [AlBO] w/Al not only reduces the cost of the parts but also improves its properties. However, there is a large thermal residual stress between Al and [AlBO] w/Al, and it is harmful for practical application. From the theoretical analyses and experimental results, it was found that by the compressive pre plastic deformation perpendicular to the interface between Al and [AlBO] w/Al, the interlayer residual stress of compound parts can be reduced, while the mechanical properties of compound parts can be improved. [ The application of compound parts of Al [AlBO] w / Al not only reduces the cost of the parts but also improves its properties. However, there is a large thermal residual stress between Al and [AlBO] w / Al, and it is harmful for practical application. From the theoretical analyzes and experimental results, it was found that by the compressive pre plastic deformation perpendicular to the interface between Al and [AlBO] w / Al, the interlayer residual stress of compound parts can be reduced, while the mechanical properties of compound parts can be improved. [