SiCp/Al-Ti laminated composites achieve the properties of high toughness

high stability and lightweight through laminated aluminum alloy

titanium alloy and the reinforcement of SiC particles

facilitating the enhancement of key components. However

the inherent differences in material properties can lead to cutting damage and other quality issues. In this study

considering the heterogeneous material properties and multiphase interface characteristics of SiCp/Al-Ti materials

a cutting simulation model based on heterogeneous materials and bilinear cohesive interfaces is established to explore the cutting force-heat changes in different cutting processes. The simulation model is validated by a two-dimensional cutting experimental platform

demonstrating discrepancies within 10%.Then

the material removal process of laminated composites under different cutting conditions is investigated through simulation analysis and surface SEM observation

revealing the formation mechanisms of cutting damage. Finally

the subarea surface roughness calculation method of 3D morphology is adopted to explore the influence law of cutting parameters on surface quality.The results show that when the tool cut from the TC4 to the SiCp/Al layer

the high strength of TC4 induces interlaminar bending deformation in the SiCp/Al

resulting in damage primarily characterized by delamination cracks and interlaminar particle crushing.Conversely

when the tool cut from the SiCp/Al into the TC4 layer

the interfacial coating of the SiCp/Al layer is affected

leading to damage predominantly manifested as interfacial coating failure and particle indentation at the interface. Furthermore

due to the presence of SiC particles

the machining of the SiCp/Al layer damage is more serious than that of the defects in the TC4 layer.