周家康, 卢明明, 魏文庆. Simulation Analysis and Experimental Verification of Cutting Removal Mechanism of SiCp/Al Composites[J]. Mechanical Science and Technology for Aerospace Engineering, 2025, 44(8): 1401-1407.
such as high specific strength/specific stiffness and good toughness
make it great application potential in engineering. Aiming at the cutting process of 25 vol% SiCp/Al composites
a two-dimensional micro-finite element model is established
and the removal mechanism is analyzed from the aspects of particle deformation
chip formation and surface quality. The results indicated that there is a good consistency between the simulated analysis and the experimental. Particle deformation behavior is influenced by tool-particle relative position
mainly manifested in the forms of fracture
debonding
and pressing into the matrix. The crack propagation caused by interfacial debonding and matrix plastic fracture is the main reason for generating the segmented serrated chips. Pits
scratches
matrix tearing
and particle fracture are the main forms of machined surface/subsurface damage. The results reveal the removal mechanism of SiCp/Al composites from a microscopic perspective
providing the useful reference to improve their machinability.