Manufacturing of high-strength aluminum/alumina composite by accumulative roll bonding

The ARB process used as a technique in this study provides an effective alternative method for manufacturing high-strength aluminum/alumina composites. The microstructural evolution and mechanical properties of the aluminum/15 vol.% alumina composite are reported. The composite shows an excellent al...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2010, Vol.527 (16), p.4146-4151
Main Authors: Jamaati, Roohollah, Toroghinejad, Mohammad Reza
Format: Article
Language:English
Subjects:
Accumulative roll bonding
Aluminium
Aluminum
Aluminum oxide
Annealing
Applied sciences
Dispersion hardening metals
Elasticity. Plasticity
Exact sciences and technology
Failure modes
Fractography
Fractures
Heat treatment
Materials science
Mechanical properties
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metal matrix composites
Metals. Metallurgy
Microstructure
Powder metallurgy. Composite materials
Production techniques
Scanning electron microscopy
Shear
Tensile tests
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Summary:The ARB process used as a technique in this study provides an effective alternative method for manufacturing high-strength aluminum/alumina composites. The microstructural evolution and mechanical properties of the aluminum/15 vol.% alumina composite are reported. The composite shows an excellent alumina particle distribution in the matrix. It is found that by increasing the number of ARB cycles, not only does elongation increase in the composites produced but also the tensile strength of the Al/15 vol.% Al 2O 3 composite improves by 4 times compared to that of the annealed aluminum used as the original raw material. Fracture surfaces after tensile tests are observed by scanning electron microscopy (SEM) to investigate the failure mode. Observations reveal that the failure mode in both ARB-processed composites and monolithic aluminum is of the shear ductile rupture type.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2010.03.070