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Fabrication and properties of aluminum-carbon nanotube accumulative roll bonded composites Open Access


Other title
Metal matrix composites
Accumulative roll bonding
Carbon nanotubes
Type of item
Degree grantor
University of Alberta
Author or creator
Salimi, Sahar
Supervisor and department
Gerlich, Adrian (Chemical and Materials Engineering)
Examining committee member and department
Mendez, Patricio (Chemical and Materials Engineering)
Gerlich, Adrian (Chemical and Materials Engineering)
Lubell, Adam (Civil and Environmental Engineering)
Department of Chemical and Materials Engineering

Date accepted
Graduation date
Master of Science
Degree level
Accumulative roll bonding was adapted to fabricate a carbon nanotube reinforced aluminum matrix composite. The microstructure was investigated by transmission electron microscopy, and it was confirmed that the nanotubes were embedded into the metal matrix while maintaining their multiwalled structure. Measurements revealed that the as-received carbon nanotubes had a bimodal diameter size distribution, while only nanotubes with diameters >30 nm and more than 30 walls were retained during four consecutive rolling operations at 50% reduction. The elastic deflection and vibration damping properties of the laminated composite were investigated by cantilever bending test and by impulse excitation method in samples with different concentrations of carbon nanotubes. Measurements by both methods revealed that a 0.23wt% concentration of nanotubes increased the elastic modulus according to the rule of mixtures and the damping behavior of the composites increased by the addition of nanotubes up to 0.1wt%.
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