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Ultrasonic-Assisted Stir Casting of Sic-Reinforced AA2024 Composites: Microstructure and Mechanical Properties.

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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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  – Url: https://dx.doi.org/doi:10.1007/s40962-026-02110-2
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Ultrasonic-Assisted Stir Casting of Sic-Reinforced AA2024 Composites: Microstructure and Mechanical Properties.
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  Data: <searchLink fieldCode="AR" term="%22Oza%2C+Rakesh%22">Oza, Rakesh</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> raophdme@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Dhruv%2C+Anand+B%2E%22">Dhruv, Anand B.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> dhruv_30@rediffmail.com</i><br /><searchLink fieldCode="AR" term="%22Badheka%2C+Vishvesh%22">Badheka, Vishvesh</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> vishvesh.badheka@spt.pdpu.ac.in</i><br /><searchLink fieldCode="AR" term="%22Mehta%2C+Krunal%22">Mehta, Krunal</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> Krunal.Mehta@sot.pdpu.ac.in</i><br /><searchLink fieldCode="AR" term="%22Gajjar%2C+Pradip%22">Gajjar, Pradip</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> Pradip.msu@gmail.com</i>
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Metalcasting%22">International Journal of Metalcasting</searchLink>. Aug2026, p1-12. 12p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Silicon+carbide%22">Silicon carbide</searchLink><br />*<searchLink fieldCode="DE" term="%22Composite+material+manufacturing%22">Composite material manufacturing</searchLink><br />*<searchLink fieldCode="DE" term="%22Microstructure%22">Microstructure</searchLink><br />*<searchLink fieldCode="DE" term="%22Aluminum+alloys%22">Aluminum alloys</searchLink><br />*<searchLink fieldCode="DE" term="%22Wear+resistance%22">Wear resistance</searchLink><br />*<searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br />*<searchLink fieldCode="DE" term="%22Grain+refinement%22">Grain refinement</searchLink><br />*<searchLink fieldCode="DE" term="%22Sliding+wear%22">Sliding wear</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: 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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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1007/s40962-026-02110-2
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      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 12
        StartPage: 1
    Subjects:
      – SubjectFull: Silicon carbide
        Type: general
      – SubjectFull: Composite material manufacturing
        Type: general
      – SubjectFull: Microstructure
        Type: general
      – SubjectFull: Aluminum alloys
        Type: general
      – SubjectFull: Wear resistance
        Type: general
      – SubjectFull: Mechanical behavior of materials
        Type: general
      – SubjectFull: Grain refinement
        Type: general
      – SubjectFull: Sliding wear
        Type: general
    Titles:
      – TitleFull: Ultrasonic-Assisted Stir Casting of Sic-Reinforced AA2024 Composites: Microstructure and Mechanical Properties.
        Type: main
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            NameFull: Oza, Rakesh
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            NameFull: Dhruv, Anand B.
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            NameFull: Badheka, Vishvesh
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            NameFull: Mehta, Krunal
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            NameFull: Gajjar, Pradip
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            – D: 21
              M: 08
              Text: Aug2026
              Type: published
              Y: 2026
          Identifiers:
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            – TitleFull: International Journal of Metalcasting
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