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- W2022128575 abstract "Aluminum matrix composites are important engineering materials in automotive, aerospace and other applicationsbecause of their low weight, high specific strength and better physical and mechanical properties compared to purealuminum. ZrO 2 particles as reinforcement were selected to add aluminum with micron and nano size. Al/ZrO 2 composites were produced by direct incorporation (vortex method) in different temperatures and 5 volume percents ofZrO 2 particles. Microstructure of the samples was studied by scanning electron microscopy (SEM). Chemicalcomposition of the phases was studied by XRD. Hardness, and density of these composites were also measured. Themicrostructure and mechanical properties tests of composites and study the effect of particle size, resulted the betterproperties compared to matrix aluminum. Homogeneous dispersion of the reinforcement particles in the matrixaluminum was observed. The results show enhancing the composites properties for all samples compared to themonolithic alloy. However there are some differences in results because of particle size of ceramics and thereforedifferences between particles surface area. Maximum volume percent that can be added to A356 aluminum alloy is 5vol.%, for nano ZrO 2 particles, but it seems that is more than 5 vol.% for micron particles. Increasing of viscosity,porosities and much more defects are caused by increasing volume percents and using smaller particles. The castingprocessing is difficult in these conditions. Furthermore, optimum temperatures of casting for micron and nano zirconiaparticles are not the same." @default.
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- W2022128575 date "2007-07-18" @default.
- W2022128575 modified "2023-10-18" @default.
- W2022128575 title "Comparing addition of ZrO 2 particles in micron and nano scale on microstructure and mechanical behavior of aluminum-matrix composites produced by vortex route" @default.
- W2022128575 doi "https://doi.org/10.1117/12.780330" @default.
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