Dry Sliding Wear Behavior of Aluminum Metal Matrix Composite Reinforced with Lithium and Silicon Nitride

In this study aluminium 2024 metal matrix composite was fabricated with lithium, silicon nitride and composite containing both lithium and silicon nitride using stir casting route. XRD results presented for confirming the existence of the reinforcements after the fabrication of composite. These fabr...

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Veröffentlicht in:SILICON 2022-01, Vol.14 (1), p.115-125
Hauptverfasser: K, Raju, M, Balakrishnan
Format: Artikel
Sprache:eng
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Zusammenfassung:In this study aluminium 2024 metal matrix composite was fabricated with lithium, silicon nitride and composite containing both lithium and silicon nitride using stir casting route. XRD results presented for confirming the existence of the reinforcements after the fabrication of composite. These fabricated composite samples were subjected to DUCOM pin on disc wear testing machine to study its dry sliding wear behaviors. Load, Speed and time were varied for a constant sliding distance. The scanning electron microscope was used to analyze the worn surface of wear tested composite samples. This study reveals that the increased sliding speed and load decreases the wear rate. Addition of hard ceramic reinforcement such as silicon nitrides to the composite reduces the wear coefficient and hence wear resistance is increased as compared to unreinforced alloy. The reduction in wear coefficient is due to the formation of mechanically mixed layer which is induced by the addition of hard silicon nitride to the aluminium alloy.
ISSN:1876-990X
1876-9918
DOI:10.1007/s12633-020-00793-8