Mechanical and Tribological Properties of A7050 Hybrid Composite Reinforced with Nano Al₂O₃/Micro ZrO₂ Particles by Stir Casting Method

Abstract:

The composite plays an important role in the new generation of engineering material with better tribological and mechanical properties. In this paper, the hybrid composites of A7050/Al₂O₃/ZrO₂ with different wt. % of reinforcement materials (0.5, 1, 1.5wt. % ZrO₂, and 1wt. % Al₂O₃ constant for all composites) were fabricated by stir casting method. From the results, it was observed that the good texture in microstructure without defect with an addition of constant 1wt% Al₂O₃ and varying 0.5, 1and 1.5 wt% ZrO₂. The Hardness of hybrid composites is increased by 27% with addition of 1wt % of Al₂O₃ and 1.5 wt% ZrO₂ compare to base alloy. Charpy impact strength decreased with the addition of Al₂O₃ and ZrO₂ ceramic particle in all the composites. From the dry wear studies, the composite with 1wt% Al₂O₃ and 1wt% ZrO₂ was observed with minimum wear loss and low coefficient of friction.

• Periodical: Materials Science Forum (Volume 969)
• Pages: 576-581
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.969.576
• Online since: August 2019
• Authors: Kannan Sekar*, Rahul Singh
• Keywords: A7050/Al₂O₃/ZrO₂, Hardness, Impact Study, Microstructure, Stir Casting Method, Wear Study

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