Synthesis, tensile testing, and microstructural characterization of nanometric SiC particulate-reinforced Al 7075 matrix composites

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dc.contributor.authorAhmed, Aen_AU
dc.contributor.authorNeely, AJen_AU
dc.contributor.authorShankar, Ken_AU
dc.date.accessioned2010-08-03T06:19:18Zen_AU
dc.date.available2010-08-03T06:19:18Zen_AU
dc.date.issued2010-06en_AU
dc.date.statistics2010-06en_AU
dc.description.abstractThis article examines the reasons for the poor performance of the nanometric scale SiC (n-SiC p) particulate-reinforced Al 7075 composites. The composites having different volume fractions of the n-SiC p were synthesized via powder metallurgy (P/M) route and were uniaxially tested at room temperature. Experimental results showed a significant drop in the hardness and tensile properties of the composites in comparison with those of the monolithic Al. Microstructural analysis via scanning electron microscopy (SEM) revealed large segregation of Mg in the vicinity of the n-SiC p and at the grain boundaries of the Al matrix, which plausibly changed both the aging kinetics and tensile behavior of the Al matrix. The segregation of Mg increased with an increase in the volume fraction of the n-SiC p in the Al matrix. No Mg segregation was found in the monolithic Al. The clustering of the n-SiC p was observed from SEM with energy dispersive X-ray analysis. SEM also revealed cracks in the n-SiC p clusters and debonding between the clusters and Al matrix, which were considered as the main mode of fracture in the composites. © 2010, Springer. The original publication is available at © Springer Natureen_AU
dc.identifier.citationAhmed, A., Neely, A. J., Shankar, K., Nolan, P., Moricca, S., & Eddowes, T. (2010). Synthesis, tensile testing, and microstructural characterization of nanometric SiC particulate-reinforced Al 7075 matrix composites. Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science, 41A(6), 1582-1591. doi:10.1007/s11661-010-0201-yen_AU
dc.identifier.govdoc2145en_AU
dc.identifier.issn1073-5623en_AU
dc.identifier.issue6en_AU
dc.identifier.journaltitleMetallurgical and Materials Transactions A - Physical Metallurgy and Materials Scienceen_AU
dc.identifier.pagination1582-1591en_AU
dc.identifier.urihttp://dx.doi.org/10.1007/s11661-010-0201-yen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/2003en_AU
dc.identifier.volume41aen_AU
dc.language.isoenen_AU
dc.publisherSpringeren_AU
dc.subjectTensile propertiesen_AU
dc.subjectScanning electron microscopyen_AU
dc.subjectAluminiumen_AU
dc.subjectMatrix elementsen_AU
dc.subjectMagnesiumen_AU
dc.subjectPowder metallurgyen_AU
dc.titleSynthesis, tensile testing, and microstructural characterization of nanometric SiC particulate-reinforced Al 7075 matrix compositesen_AU
dc.typeJournal Articleen_AU
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