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    • University of Missouri-Columbia
    • Graduate School - MU Theses and Dissertations (MU)
    • Theses and Dissertations (MU)
    • Theses (MU)
    • 2007 Theses (MU)
    • 2007 MU theses - Freely available online
    • View Item
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    Characterization of mechanical properties and study of microstructures of friction stir welded joints fabricated from similar and dissimilar alloys of aluminum

    Akula, Deepa Reddy
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    [PDF] public.pdf (6.969Kb)
    [PDF] short.pdf (10.65Kb)
    [PDF] research.pdf (6.596Mb)
    Date
    2007
    Format
    Thesis
    Metadata
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    Abstract
    The objective of this research was to characterize the mechanical properties and study the microstructures of the friction stir welded joints to obtain the optimum process conditions that would result in the desired microstructure and properties for sheet metal formed structures. The joints were tested for mechanical properties such as tensile strength, ductility and formability and the microstructure was studied under optical microscope, scanning electron microscope and energy dispersive spectrograph (EDS). Tests were conducted on a Cincinnati Milling machine which was generously donated by the Boeing Company which was transformed in to a friction stir welding machine by designing and manufacturing the required fixtures. The experiments were designed using response surface methodology (RSM) as the design of experiments, a L9 array was designed and the joints fabricated were tested for their mechanical properties and the microstructure was studied to obtain the optimal process conditions. The optimal conditions were identified for friction stir welding of AA 2024-T3, AA 7075-T6 and a combination of both the alloys.
    URI
    https://hdl.handle.net/10355/4976
    https://doi.org/10.32469/10355/4976
    Degree
    M.S.
    Thesis Department
    Mechanical and aerospace engineering (MU)
    Collections
    • Mechanical and Aerospace Engineering electronic theses and dissertations (MU)
    • 2007 MU theses - Freely available online

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