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Statistical Investigation of Power Consumption in Dry Turning of Stir-Cast Al7075-SiC-Gr Metal Matrix Composites

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Abstract:

The increasing demand for Al7075 metal matrix composites (MMCs) stems from their exceptional characteristics, which include a high strength-to-weight ratio, low density, and superior mechanical characteristics. This research focuses on strengthening the Al7075 aluminum alloy by incorporating silicon carbide (SiC) and graphite particles. The material was produced through stir casting, using constant weight proportions of 3% SiC and 7% graphite. The research investigates the machinability of the stir-casting fabricated Al7075-SiC-Gr composites through turning operations under dry cutting conditions. Key process parameters include cutting speed (520, 840, 1200 RPM), axial feed rate (0.15, 0.25, 0.35 mm/rev), and doc (0.1, 0.2, 0.3 mm) were varied to assess their impact on power consumption. Results indicate that power consumption rises with increased cutting speed and doc. Among the factors, machining speed significantly affects power consumption, contributing 2.74% to the increase in power usage. This study highlights the vital role of machining parameters in optimizing the performance of Al7075-SiC-Gr MMCs and provides insights for enhancing both efficiency and surface quality in manufacturing applications.

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Periodical:

Materials Science Forum (Volume 1171)

Pages:

19-27

DOI:

https://doi.org/10.4028/p-4ejiGL

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Online since:

December 2025

Authors:

Smita Padhan*, Jasmin Jayasmita Mohapatra, Lipsamayee Mishra, Arun Kumar Rout, Sudhansu Ranjan Das

Keywords:

Graphite (Gr) Power Consumption, Hardness, Metal Matrix Composites (MMCs), Silicon Carbide (SiC)

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© 2025 Trans Tech Publications Ltd. All Rights Reserved

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