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Structural Morphology, Elemental Composition, Mechanical and Tribological Properties of the Effect of Carbon Nanotubes and Silicon Nanoparticles on AA 2024 Hybrid Metal Matrix Composites
Journal Article
05-15-02-0013
ISSN: 1946-3979, e-ISSN: 1946-3987
Sector:
Topic:
Citation:
Muniyappan, M. and Iyandurai, N., "Structural Morphology, Elemental Composition, Mechanical and Tribological Properties of the Effect of Carbon Nanotubes and Silicon Nanoparticles on AA 2024 Hybrid Metal Matrix Composites," SAE Int. J. Mater. Manf. 15(2):187-203, 2022, https://doi.org/10.4271/05-15-02-0013.
Language:
English
Abstract:
This research involves the study of the different properties of aluminum alloy AA
2024 in the presence of carbon nanotubes (CNTs) and Silicon (Si) nanoparticles.
Structural morphology, elemental composition, mechanical properties (density,
tensile strength, elongation, and hardness), and tribological properties (wear
rate and coefficient of friction) of AA 2024 in the presence of CNTs, Si, and
its combinations at various proportions were evaluated using a Scanning Electron
Microscope (SEM), Energy Dispersive X-Ray Analyzer (EDX), Universal Testing
Machine (UTM), Model HMV-2T Vickers hardness test machine, and pin-on-disk
friction-and-wear test rig. The Hybrid Metal Matrix Composite (HMMC) material is
prepared by a two-stage stir casting method. It was found that the density of
the AA 2024 + 4%CNT + 2%Si is 2.22 g/cm3, ultimate tensile strength
is 308 N/mm2, elongation is 15.5%, and Vickers hardness is 187.5
Vickers Hardness Number (VHN). The pin on the disk machine is used to evaluate
the wear resistance and friction coefficient of the sample. Under higher loads,
it was found that the wear rate and friction coefficient of the composite
material decreased. AA 2024 + 4%CNT + 2%Si showed higher results than other
composite materials.