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Dr. Mohamed Hamdi Gooda Ghaith :: Publications:

Machinability of A356/Al2O3 cast aluminum metal matrix nanocomposites (MMCs)
Authors: E.Y.El-Kady, T.S.Mahmoud*, M.H.G.Ghaith
Year: 2013
Keywords: Metal matrix nanocomposites; Machinability; Aluminum alloys; Flank tool wear; Chip deformation ratio; Surface roughness.
Journal: Materials Science
Volume: Not Available
Issue: Not Available
Pages: Not Available
Publisher: Not Available
Local/International: International
Paper Link: Not Available
Full paper Mohamed Hamdi Gooda Ghaith_Machinability of A356Al2O3 cast aluminum metal matrix nanocomposites (MMCs).pdf
Supplementary materials Not Available

The aim of the present investigation is to study the machinability of A356/ Al2O3 nanocomposites under dry machining conditions. The A356/Al2O3 nanocomposites specimens were originally fabricated using a combination between the rheocasting and squeeze casting routes. The nanocomposites were reinforced with Al2O3 particulates having 60 and 200 nm having different volume fractions up to 5 vol.-%. The machinability of the A356/Al2O3 nanocomposites was investigated through measuring the cutting force components (Fa, Fr and Fc), tool flank wear, surface roughness of the machined specimens and the chip deformation ratio. The machinability parameters were obtained under different machining conditions. The inserts manufactured from coated carbides were used for machining the nanocomposites. The results revealed that the machinability of nanocomposites was improved by increasing the volume fraction and/or decreasing the nanoparticulates size. However, the cutting force components as well as the flank tool wear increase with increasing the volume fraction and/or the nanoparticulates size.

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