Λεπτομέρειες βιβλιογραφικής εγγραφής
| Τίτλος: |
Ultrasonic-Assisted Stir Casting of Sic-Reinforced AA2024 Composites: Microstructure and Mechanical Properties. |
| Συγγραφείς: |
Oza, Rakesh1,2 (AUTHOR) raophdme@gmail.com, Dhruv, Anand B.2 (AUTHOR) dhruv_30@rediffmail.com, Badheka, Vishvesh3 (AUTHOR) vishvesh.badheka@spt.pdpu.ac.in, Mehta, Krunal3 (AUTHOR) Krunal.Mehta@sot.pdpu.ac.in, Gajjar, Pradip2 (AUTHOR) Pradip.msu@gmail.com |
| Πηγή: |
International Journal of Metalcasting. Aug2026, p1-12. 12p. |
| Θεματικοί όροι: |
*Silicon carbide, *Composite material manufacturing, *Microstructure, *Aluminum alloys, *Wear resistance, *Mechanical behavior of materials, *Grain refinement, *Sliding wear |
| Περίληψη: |
AA2024-SiC composites with varying silicon carbide (SiC) contents were produced through ultrasonic-assisted stir casting (UASC) at 20 kHz for 3 minutes, using 50 µm SiC particles. Experimental density increased while porosity content decreased with increasing percentage of SiC content. Further, this study revealed a uniform distribution of SiC and significant grain refinement with the implementation of SiC. The Vickers microhardness increased from 82.7 ± 10.2 HV for unreinforced AA2024 to max. of 127 ± 8.2 HV at 12 wt.% SiC, marking a 53.5% enhancement due to grain refinement and strong interfacial bonding. Wear tests were conducted as per ASTM G99 conditions with a 20 N applied load and 1 m/s sliding speed, and they showed the lowest wear rate of 1.929 × 10−4 mm3/Nm and a coefficient of friction (COF) of 0.439 for the 9 wt.% SiC composite, demonstrating optimal tribological performance. Higher SiC content (12 wt.%) slightly increased wear rate to 2.139 × 10−4 mm3/Nm despite a reduced COF of 0.397, attributed to particle agglomeration and increased porosity. This study established that, among all compositions, 9 wt.% was reported as the optimum level, providing better structural integrity and excellent wear resistance for lightweight industrial applications. [ABSTRACT FROM AUTHOR] |
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