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D. I. Pantelis P. N. Karakizis N. M. Daniolos C. A. Charitidis E. P. Koumoulos D. A. Dragatogiannis 《Materials and Manufacturing Processes》2016,31(3):264-274
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. 相似文献
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Ksinopoulou Evangelia Dragatogiannis Dimitrios Bakolas Asterios Charitidis Constantinos Moropoulou Antonia 《Journal of Polymer Research》2022,29(5):1-15
Journal of Polymer Research - Sodium 2,2′-methylene-bis(4,6-di-tertbutylphenyl)-phosphate (NA11) is an α-type nucleating agent for improving the mechanical and crystallization... 相似文献
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D. A. Dragatogiannis E. P. Koumoulos I. A. Kartsonakis D. I. Pantelis P. N. Karakizis 《Materials and Manufacturing Processes》2016,31(16):2101-2114
Dissimilar friction stir welding between aluminum alloys thick plates reinforced with TiC nanoparticles was conducted. The defect-free welds are characterized by good mechanical mixing between the joined materials as well as by good nanoparticle distribution and further grain refinement in comparison with the unreinforced weld. The local mechanical behavior of the produced metal matrix composites was studied and compared with their bulk counterparts and parent materials. Specifically, the measured mechanical properties in microscale and nanoscale (namely hardness and elastic modulus) are correlated with microstructure and the presence of fillers. The hardness, elastic modulus, ultimate tensile strength, percentage of elongation, and yield values increase with the presence of TiC nanoparticles. 相似文献
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