Abstract
The present investigation is focused on enhancing the characteristics of aluminium alloy (Al6061) hybrid nanocomposites synthesized with constant (5 wt%) weight percentage of graphite (Gr) and 5, 7.5, and 10 wt% of silicon carbide (SiC) nanoparticles (50 nm) via liquid state stir vacuum to die cast process. The physical (actual density, theoretical density, and porosity), microstructural, mechanical (stress-strain and microhardness), and wear performance of Al6061 alloy hybrid nanocomposites were studied, and its results were compared with gravity die-cast developed composite samples. The liquid state stirs vacuum die-cast developed composites to facilitate good mechanical and wear characteristics. Moreover, the composite contained 10 wt% SiC, and 5 wt% Gr (sample 4) offered a low porosity level of 0.72%, higher microhardness of 86 ± 1.1 HV, better yield strength of 118 ± 0.5 MPa, an optimum tensile strength of 147 ± 0.58 MPa, and 3.2 mm strain value. Similarly, the sample 4 composite has higher wear resistance with a low wear rate of 0.321 mg/m and a good coefficient of friction (0.41) at 40 N under 0.75 m/sec.
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All authors contributed to the study’s conception and design. The first draft of the manuscript was written by RV, and the individual contributions of All authors are given below. AB–formal analysis, investigation, APS–methodology, writing, review & editing, MVDP–investigation, writing& language help, RV–original draft preparation, supervision, and validation. All authors read and approved the final manuscript.
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Baraniraj, A., Sathiyagnanam, A.P., Venkatesh, R. et al. Vacuum Stir Cast Developed Aluminium Alloy Hybrid Nanocomposite Performance Compared with Gravity Cast: Mechanical and Tribological Characteristics Study. Inter Metalcast 18, 1273–1283 (2024). https://doi.org/10.1007/s40962-023-01119-1
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DOI: https://doi.org/10.1007/s40962-023-01119-1