This paper investigates the underlying cutting mechanism of SiC particle-reinforced aluminum matrix composites (MMCs) using finite element (FE) simulations and precision turning experiments. One constitutive model for SiCp/Al composites is established and verified by experiments. On this basis, the possible fracture processes of SiC particles in turning process are studied, and three types of fracture are finally found. The types and the corresponding formation mechanism of machined surface defects are investigated; the relationship between the particle size and surface roughness is established quantitatively. Furthermore, the influences of machining parameters on the cutting force are studied. The proposed FE simulation model and conclusion are verified by precision turning experiments.
SiCp/Al Metal matrix composite FE simulation Cutting mechanism Precision turning
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The authors gratefully acknowledge the financial support of the National Natural Science Foundation of China (Grant No.51505107), Project (HIT.NSRIF.2017029) supported by Natural Scientific Research Innovation Foundation in Harbin Institute of Technology and the International Science & Technology Cooperation Program of China (No. 2015DFA70630).
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
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