International Journal of Research in Advanced Engineering and Technology

International Journal of Research in Advanced Engineering and Technology


International Journal of Research in Advanced Engineering and Technology
International Journal of Research in Advanced Engineering and Technology
Vol. 5, Issue 3 (2019)

Effect of isothermal heat treatment on the hardness and microstructural study of aluminium/periwinkle shell ash bio composite


OB Umaru, M Abdulwahab, A Tokan, A Onoriode, Y Mohammed

Effect of isothermal heat treatment on the hardness and microstructural study of aluminium/periwinkle shell ash bio composite produced by double stir casting method was studied. The samples were heat treated at 540°C for one hour and immediately quenched in warm water (36.5°C) before artificially aged to 180°C for two hours. The hardness of the composite was determined using Rockwell-B scale universal hardness tester, the chemical composition of the Periwinkle Shell Ash (PSA) was studied using X-Ray Fluorescence (XRF) machine, the thermal properties/stability of the composites was studied via Dispersion Scanning Calorimetry (DSC) using a TDG-DSC analyzer and microstructures of the composites were studied via Scanning Electron Microscopy (SEM) equipped with an Energy Dispersion Spectroscopy (EDS) system. From the microstructure (SEM/EDS) result obtained, the PSA in samples B, C & D were found to be homogeneously distributed in the Aluminium Metal Matrix and showed an endothermic DSC curve (i.e. heat absorbed by the composite) which indicated that more energy will be required to cause a dislocation in the metal matrix that led to the failure of materials, while sample E showed least distribution of the periwinkle shell ash in the Aluminium metal matrix which is due to exothermic DSC curve (i.e. heat loss) and indicates that less energy would be required to cause a dislocation movement in the metal matrix of the material. The Hardness value of the composite varies from 7.0 to 7.4 as compared with the 5.0 value of pure Aluminium. It can be deduced that the addition of Periwinkle Shell Ash as a reinforcement to the Aluminium metal matrix has improved the hardness under the studied condition.
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How to cite this article:
OB Umaru, M Abdulwahab, A Tokan, A Onoriode, Y Mohammed. Effect of isothermal heat treatment on the hardness and microstructural study of aluminium/periwinkle shell ash bio composite. International Journal of Research in Advanced Engineering and Technology, Volume 5, Issue 3, 2019, Pages 77-81
International Journal of Research in Advanced Engineering and Technology