Mohamed Hamdi Gooda Ghaith
Asst. Prof. Emeritus
Machinability of A356/Al2O3 cast aluminum metal matrix nanocomposites (MMCs)
Materials Science • 2013
Publication Information
Authors
E.Y.El-Kady, T.S.Mahmoud*, M.H.G.Ghaith
Keywords
Metal matrix
nanocomposites;
Machinability;
Aluminum alloys;
Flank tool wear;
Chip deformation ratio;
Surface roughness.
Journal
Materials Science
Publisher
Not Available
Volume
Not Available
Issue
Not Available
Pages
Not Available
publication.type
International
Paper Link
Not Available
Supplementary Materials
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Abstract
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.
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.