Effect of cenosphere particle size and relative density on the compressive deformation behavior of aluminum-cenosphere hybrid foam
Abstract AlSi12Cu1Mg1-cenosphere hybrid foams (HFs) of varying relative densities were made through stir casting technique using CaH 2 as a foaming agent. Cenospheres of different size ranges were used as a thickening agent, as well as to create micropores in the cell wall. The foaming temperature was varied to vary the relative density, which has not been studied earlier. The combine effect of cenosphere size and relative density on the compressive deformation behavior of HFs was investigated. The plastic collapse stress, plateau stress, and energy absorption of hybrid foam increase with decrease in cenosphere size and increase in relative density. On the other hand, the densification strain is almost invariant to the cenosphere size. All the above responses are correlated with relative density and materials parameters of HFs. This study demonstrates that cenosphere a thermal power plant waste can be used to get good quality of hybrid foam. Highlights Cenosphere reinforced hybrid foams of varying densities were made by varying foaming temperature. Deformation responses of hybrid foam are strong function of cenosphere size and relative density. Empirical relation has been established among deformation response, relative density and other materials parameters. Cenosphere a bi-product of thermal power plant can be used for making hybrid foam. Graphical abstract Cenospheres (spherical microballoons) of different size ranges are used to make aluminum alloy – cenospheres hybrid foam with varying relative densities. The cells are quite uniform in size and the cenospheres are uniformly distributed in cell walls. The relative density varied by varying foaming temperature and it varies between 0.11 and 0.32. The plateau stress, energy absorption increases with increase in relative density and decrease in cenosphere size. The densification strain is almost invariant to the cenosphere size. [DISPLAY OMISSION]
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