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doi: 10.17586/2226-1494-2023-23-1-68-78

Investigation on impact and wear behavior of Al6061 (SiC+Al2O3) and Al7075 (SiC+Al2O3) hybrid composites 

R. Ravichandaran, S. Saminathan, S. Gopal, R. Ravisankar


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Article in English

For citation:

Ravichandaran R., Selvarasu S., Gopal S., Ramachandran R. Investigation on impact and wear behavior of Al6061 (SiC + Al2O3) and Al7075 (SiC + Al2O3) hybrid composites. Scientific and Technical Journal of Information Technologies, Mechanics and Optics, 2023, vol. 23, no. 1, pp. 68–78. doi: 10.17586/2226-1494-2023-23-1-68-78



Abstract
The current study focuses on the properties of dry sliding characteristics and impact strength of two different aluminum alloys that were reinforced with 100 nm sized Silicon carbide (SiC) and Aluminum oxide (Al2O3) ceramic particles, for improving the mechanical properties of the final alloy with the mixing materials characteristics. Stir casting method is adopted for fabricating the composites, matrix being Al6061 and Al7075, utilizing three distinct reinforcement ratios. In order to improve the mechanical properties and increase resistance to wear, tear, and shear, SiC and Al2O3 are utilized as reinforcing elements. Following the creation of the composite matrices, their physical and mechanical behaviors are examined in accordance with ASTM standards, and a comparison between the hybrid composites made of Al6061 and Al7075 is then completed. Comparison of the obtained samples showed that the Al7075 (12 % SiC + 6 % Al2O3) alloy exhibits characteristics with exceptional tribological and mechanical characteristics. The studied alloy can be used in the automotive industry, for example, in the production of pistons, connecting rods, due to the minimum degree of wear and variable thermal expansion coefficient.

Keywords: hybrid composite, Al6061, Al7075, impact strength, wear resistivity, optical microscope analysis

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