Abstract
This study examines the friction and wear characteristics of AA2219 aluminum alloy and its composites enhanced with boron carbide (B4C), which were produced using the stir casting method. The research investigates the impact of different loads (20 N, 30 N, and 40 N) and sliding velocities (1.25 m/s, 2.51 m/s, 3.76 m/s) on wear rates. Age-hardened specimens are used to assess the enhancements in wear resistance. The results demonstrate a clear link between higher sliding speeds and loads, and increasing wear rates. Additionally, it was observed that longer sliding distances led to a drop in wear rate. These findings emphasize the influence of speed and distance on wear behavior. Specifically, composites containing 4 wt% B4C exhibited exceptional wear resistance under all testing conditions. The scanning electron microscopy (SEM) investigation of worn surfaces provided evidence that B4C plays a protective effect in preventing abrasive wear. It was noted that higher concentrations of B4C resulted in smoother wear patterns. The study unequivocally proves that the tribological properties in AA2219-B4C composites are improved, making them suitable for applications that need strong resistance to wear. An ideal B4C concentration has been determined to strike a balance between mechanical qualities and wear performance.
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Supriya, B., Aswatha, Thimmaiah, M.B. et al. Wear Behavior of AA2219-B4C Composite Fabricated via Stir Casting Followed by Age Hardening. J. Inst. Eng. India Ser. D (2024). https://doi.org/10.1007/s40033-024-00736-2
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DOI: https://doi.org/10.1007/s40033-024-00736-2