Mach Inability OF Al-Si/MWCNTs Metal Matrix Nano Composites During Turning Operation

Document Type : Research articles

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Mechanical Engineering Department, Shoubra Faculty of Engineering, Benha University, Cairo, Egypt.

Abstract

Multi-wall carbon nano-tubes (MWCNTs) have attracted great attention because their excellent mechanical properties. The aim of this investigation is to investigate the machinability of aluminum silicon alloys reinforced with various volume percentages of MWCNTs.The stir casting route was used to fabricate work piece materials reinforced with 0.5% and 1% vol.-% of MWCNTs. The effect of machining parameters, typically, the cutting speed, feed rate and depth of cut on the surface quality of Al-Si/MWCNTs metal matrix nanocomposites(MMNCs) was evaluated. The machinability of the Al-Si/MWCNTs nanocomposites was evaluated using the surface roughness (Ra), roundness error and metal removal rate (MRR). The analysis of variance (ANOVA) was carried out based on Taguchi L27 orthogonal array design of experiments techniqueto determine the most influential parameter on the aforementioned parameters. The ANOVA results showed that feed rate was the most significant parameter on surface roughness followed by cutting speed. The MWCNTsvol.-% was found to be the most significant parameter that affecting the roundness error followed by feed rate. While the most significant parameter on MRR was the cutting speed followed by feed rate.

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