Evaluation of physical, mechanical and corrosion properties of BN reinforced Al7079 metal matrix composites

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Mahesh Kumar V

Evaluation of physical, mechanical and corrosion properties of BN reinforced Al7079 metal matrix composites

Authors: Mahesh Kumar V

Unique Paper ID: 168885
Volume: 11
Issue: 5
PageNo: 2298-2305

Keywords: Aluminium alloy boron nitride (BN) Metal matrix composites (MMCs) mechanical property corrosion property

Abstract:
Metal matrix composites (MMCs) are regarded as viable alternatives to conventional materials such as metals, plastics, and ceramics in structural applications due to their properties, including lightweight, high specific stiffness, elevated elastic modulus, enhanced specific strength, and excellent wear resistance. Among the many metal composites, aluminum metal matrix composites (MMCs) have emerged as sophisticated engineering materials for several prospective applications in engineering industries due to their superior qualities compared to typical aluminum alloys. Ceramic particles are the most extensively utilized reinforcements in MMCs due to their superior wear resistance, thermal stability, and exceptional bonding with the matrix. This research work has been conducted to develop ceramic particle-reinforced aluminum matrix composites and to evaluate their physical and mechanical properties. Al7079 alloy and Boron Nitride (BN) are selected as the matrix and reinforcement for the study respectively. The stir casting technique was utilized to fabricate the composites.Al7079-BN composites are prepared by varying the percentage of BN reinforcement particles from 0 to 8% by volume, with an increment of 2%. Test specimens were machined from the produced composites for the evaluation of microstructural, physical, mechanical properties according to ASTM standards. The microstructural analysis of the produced samples was conducted using scanning electron microscopy (SEM). The density of the composite was assessed empirically using Archimedes' principle and theoretically through the rule of mixture. Microstructural analysis reveals a homogeneous distribution of BN particles throughout the matrix without any agglomeration, and it also demonstrates excellent bonding. The density of the composites decreased by approximately 4.6% with the incorporation of BN reinforcement up to 8%, attributed to the lower density of BN particles. Corrosion resistance of the composite found to be significantly with increase in reinforcement content.

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ISSN: 2349-6002
Volume: 11
Issue: 5
PageNo: 2298-2305

Evaluation of physical, mechanical and corrosion properties of BN reinforced Al7079 metal matrix composites

Available:https://ijirt.org/article?manuscript=168885

Impact Factor
8.01 (Year 2024)

UGC Approved
Journal no 47859

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