Abstract
Collective outcomes of WC particle reinforcement and heat treatment on the dry sliding wear rate of AZ91 magnesium metal matrix composite have been presented. The vacuum-assisted semi-solid stir casting method was employed to fabricate the composites. Wear study was conducted on the specimens using a pin-on-disc tribometer with EN8 steel as a counter material. The experiments were designed using Taguchi L27 array, with control factors viz. applied load (20, 40 and 60 N), sliding speed (1, 2 and 3 m/s), heat treatment (no treatment, T4 and T6) and WC wt% (0, 1.5 and 3). Energy-dispersive X-ray spectroscopy and scanning electron microscopy analyses were performed to study the surface of the tested specimens. T6-treated AZ91/3.0WC composite showed 63% enhanced resistance to wear due to the presence of β-phase (Mg17Al12) precipitation during the heat treatment process and WC reinforcements.
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Karuppusamy, P., Lingadurai, K. & Sivananth, V. Effects of T4 and T6 Heat Treatments on the Wear Behaviour of WC-Reinforced Mg Alloy Matrix Composite. Trans Indian Inst Met 73, 521–530 (2020). https://doi.org/10.1007/s12666-020-01860-9
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DOI: https://doi.org/10.1007/s12666-020-01860-9