Transactions of Nanjing University of Aeronautics & Astronautics
Challenges and Strategies in Machining of Continuous Fiber-Reinforced Metal Matrix Composites: From Conventional to Non-conventional Machining
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Abstract:
Continuous fiber-reinforced metal matrix composites （CFMMCs） exhibit exceptional specific strength and high-temperature resistance， making them ideal for aerospace applications. However， their anisotropic and heterogeneous structure lead to severe machining challenges， including tool wear， fiber pull-out， and interfacial debonding. This review summarizes the current state of CFMMCs machining， emphasizing the role of energy field-assisted machining and their limitations. Conventional machining （CM） exhibits complex material removal mechanisms involving plastic deformation， brittle fracture， and interface failure. Ultrasonic vibration-assisted machining （UVAM） reduces cutting forces and residual stress through acoustic softening， while laser-assisted machining （LAM） induces fiber ductile transition and matrix softening. Femtosecond laser machining further enables high-precision， low-damage ablation. Despite these advances， research gaps remain regarding anisotropic effects， parameter coordination， and damage-service life relationships. The development of multi-energy field synergy， AI-based closed-loop control， and integrated additive-subtractive platforms is also analyzed. Finally， based on the current development status and the requirements of aerospace manufacturing， future trends in CFMMCs machining are proposed.
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This work was supported in part by the National Natural Science Foundation of China （No.52575504）.
Clc Number:
TG506
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