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Abstract
Aluminium-reinforced metal matrix composites (Al-MMCs) are highly desirable because of their low density, excellent corrosion resistance, high thermal and electrical conductivity, high strength, and stiffness. This research intends to improve the mechanical properties of Al-MMCs for lightweight automotive and aerospace applications. A Taguchi method with two parameters and four levels was used to determine the optimum amounts of graphene nanoplatelets (GNPs) (0.1, 0.25, 0.5, and 0.6 wt%) and stirring duration (1, 2, 4, and 8 minutes). GNPs were added to the molten aluminium alloys through the stir-casting process to enhance the mechanical properties of the Al-MMCs. The results revealed that the Al-MMCs with 0.25 wt% GNPs and 8 minutes of stirring time produced the highest value of hardness and tensile properties. Under these parameters, the microstructure changed from dendritic to rosette, which had a tremendous effect on the improvement of the mechanical properties. The Ultimate Tensile Strength (UTS) and Yield Strength (YS) of the samples were improved after T6 heat treatment with a value of 210.26 MPa and 145.31 MPa, respectively, and the hardness was 116 HV while the elongation to fracture was 4.89%.The results showed that the high GNP concentration improved the mechanical properties of the Al-MMCs.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Graphene nanoplatelets; semi-solid processing; nano filler; aluminium matrix composite |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Faculty/Division: | Faculty of Mechanical and Automotive Engineering Technology |
| Depositing User: | Dr Syarifah Nur Aqida Syed Ahmad |
| Date Deposited: | 13 Jan 2025 02:00 |
| Last Modified: | 13 Jan 2025 02:00 |
| URI: | http://umpir.ump.edu.my/id/eprint/43522 |
| Download Statistic: | View Download Statistics |
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