Microstructural Study and Mechanical Properties of Dissimilar Friction Stir Welded AA5083-H111 and AA6082-T6 Reinforced with SiC Nanoparticles |
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| Authors: | D I Pantelis P N Karakizis N M Daniolos C A Charitidis E P Koumoulos D A Dragatogiannis |
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| Affiliation: | 1. Shipbuilding Technology Laboratory, School of Naval Architecture and Marine Engineering, National Technical University of Athens, Zografos, Athens, Greece;2. Research Unit of Advanced Composites, Nanomechanics and Nanotechnology, School of Chemical Engineering, National Technical University of Athens, Zografos, Athens, Greece |
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| Abstract: | Dissimilar friction stir welds were produced in 3 mm thick plates of AA6082-T6 and AA5083-H111 aluminum alloys using SiC as reinforcing material. The optimum weld presents a good distribution of nanoparticles in the weld nugget and mechanical mixing of the two alloys as well as further grain refinement compared to the one without nanoparticles. Higher hardness in the weld nugget is also evidenced, followed by enhanced ultimate tensile strength and elongation values. All specimens, after the tensile test, were lead to fracture at the heat affected zone of AA6082-T6 and specifically at the region of the lowest hardness. |
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| Keywords: | Dissimilar Friction stir welding Mechanical behavior Microstructure Reinforcement particle |
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