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Title: Development and Characterization of New Magnesium Based Nanocomposites
Keywords: Microwave sintering, Magnesium nanocomposites, Heating rate, Extrusion ratio, Hybrid reinforcements, Mechanical properties
Issue Date: 11-Aug-2009
Citation: KHIN SANDAR TUN (2009-08-11). Development and Characterization of New Magnesium Based Nanocomposites. ScholarBank@NUS Repository.
Abstract: This project focuses on the development of new magnesium based nanocomposites using powder metallurgy route incorporating hybrid microwave sintering method. Microwave sintering can lead to a significant reduction in sintering time and energy consumption when compared to conventional sintering. Magnesium nanocomposites containing 0.17 and 0.7 vol.% nano-yttria reinforcements were synthesized initially. Between two compositions, Mg/0.7Y2O3 nanocomposite exhibited best strength and ductility combination. Consequently, an attempt was made to optimize the heating rate during hybrid microwave sintering and extrusion ratio on Mg and Mg/0.7Y2O3 nanocomposite. Aiming to further enhance the properties of Mg/0.7Y2O3 nanocomposite and to establish the effectiveness of microwave sintering approach, hybrid magnesium nanocomposites were developed. Using the optimized heating rate and extrusion ratio, two hybrid nanocomposite systems, Mg/(Y2O3+Cu) and Mg/(Y2O3+Ni) were synthesized. Characterization studies were conducted on synthesized materials. Detailed and insightful investigations on microstructural evolution, tensile and compressive properties and deformation mechanisms were critically made.
Appears in Collections:Ph.D Theses (Open)

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