Investigation on laser-assisted ultra-precision cutting process technology for SiCp/Al composites
Year: 2026
Type: article
Abstract: Medium-volume-fraction SiCp/Al composites are premier candidates for optical components, yet their application is constrained by severe surface defects like particle pull-out and interfacial debonding. To address these challenges, an optimized laser-assisted machining (LAM) strategy is employed. Distinct from purely mechanical assistants that primarily focus on force reduction, LAM leverages selective thermal softening to create a compliant buffer within the aluminum matrix, thereby reducing the surface roughness Sa to 0.023 µm. Utilizing constitutive models calibrated via quasi-static and high-temperature dynamic tests, finite element analysis reveals that LAM-induced thermal softening of the matrix reduces interfacial stress concentration and suppresses SiCp/Al interfacial debonding, minimizing particle pull-out and subsequent secondary plowing effects. Furthermore, a novel surface quality evaluation scheme utilizing reconstructed three-dimensional point clouds is developed to quantify cavity defects, effectively addressing the limitations of conventional roughness metrics.
Institutions: Donghua University, Politecnico di Torino, Tongji University
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
Award: G8607001045
OpenAlex ID: W7167066584