Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/28168
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dc.titleLightweight Metal Based Composites
dc.contributor.authorGOH CHWEE SIM
dc.date.accessioned2011-11-08T18:01:10Z
dc.date.available2011-11-08T18:01:10Z
dc.date.issued2008-05-06
dc.identifier.citationGOH CHWEE SIM (2008-05-06). Lightweight Metal Based Composites. ScholarBank@NUS Repository.
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/28168
dc.description.abstractIn this study, Mg nanocomposites were developed using the liquid and powder metallurgy routes. Carbon nanotubes and nanosized particulate MgO and Y2O3 were used as the reinforcement. The effect of volume/ weight fraction of reinforcements on Mg was investigated, and it was found that the addition of nanosized reinforcements in Mg generally led to an improvement in yield and tensile strengths. An increase in ductility was observed in Mg-CNT nanocomposites, and it was attributed to the more active basal slip mode and the presence of prismatic <a> slip. Mg nanocomposites exhibited much improved yield strength as compared to micron-sized particulate reinforced Mg composites due to the higher amount of geometrically necessary dislocations generated around the nanosized reinforcements. Basal slip and twinning were the main deformation modes in Mg-Y2O3 nanocomposites during extrusion, and non-basal slip was found to be activated during tensile.
dc.language.isoen
dc.subjectnanocomposite; magnesium; carbon nanotubes; basal slip; fatigue
dc.typeThesis
dc.contributor.departmentNUS GRAD SCH FOR INTEGRATIVE SCI & ENGG
dc.description.degreePh.D
dc.description.degreeconferredDOCTOR OF PHILOSOPHY
dc.identifier.isiutNOT_IN_WOS
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