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Fabrication and characterization of GNPs and CNTs reinforced Al7075 matrix composites through the stir casting process

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International Journal of Minerals,Metallurgy and Materials 2021年第7期28卷 1204-1214页

作者： siavash imanian ghazanlou Beitallah Eghbali Faculty of Materials Engineering Sahand University of TechnologyTabriz 51335-1996Iran

This study investigated the effects of adding graphene nanoplates(GNPs)and carbon nanotubes(CNTs)into the Al7075 matrix via the stir casting method on the microstructure and mechanical properties of the fabricated *** increasing the volume fraction of rein-forcements,the fraction of porosity *** X-ray diffraction results showed that the addition of reinforcements into the Al7075 changed the dominant crystal orientation from(002)to(111).Field emission scanning electron microscopy images also showed the distribution of clustered reinforcements in the *** the two reinforcements,the addition of CNTs generated a lower fraction of *** the addition of 0.52vol%GNPs into the matrix,the hardness,ultimate tensile strength and uniform elongation increased by 44%,32%,and 180%,***,the presence of 0.71vol%CNTs in the matrix increased the hardness,tensile strength and uniform elongation by 108%,129%,and 260%,respectively.

关键词： Al7075 GNPs CNTs stir casting composite

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EBSD characterization of Al7075/graphene nanoplates/carbon nanotubes composites processed through post-deformation annealing

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Transactions of Nonferrous Metals Society of China 2021年第8期31卷 2250-2263页

作者： siavash imanian ghazanlou Baitallah EGHBALI Roumen PETROV Faculty of Materials Engineering Sahand University of TechnologyP.O.Box:51335-1996TabrizIran Department of Electromechanical Systems and Metal Engineering Research Group Materials Science and TechnologyGhent UniversityTech Lane Science Park Campus A469062 GentBelgium Department of Materials Science and Engineering Delft University of TechnologyMekelweg 2DelftThe Netherlands

The effects of the post-deformation annealing on the microstructural evolution of hot rolled Al7075 matrix composites reinforced with CNTs and GNPs were *** multi-pass hot rolling was applied on the stir cast *** was then applied to the composites at 450℃ for 4 *** evolution was examined by SEM,EDS,and EBSD *** data showed that the addition of 0.87 vol.%(GNPs+CNTs)significantly inhibited the occurrence of ***,in the composite with 0.96 vol.%CNTs,recrystallization was partially ***,in composites with 0.92 vol.%of GNPs,the occurrence of recrystallization through particle stimulated nucleation(PSN)mechanism was significantly *** volume fraction of recrystallized grains depends significantly on the occurrence of PSN in the presence of *** intensity and type of the main components of the texture as well as the FCC fibers depend on the type of reinforcement.

关键词： annealing composite graphene nanoplates carbon nanotubes recrystallization particle stimulated nucleation texture

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