Abstract
The present research investigates the influence of reinforcements on microstructural and mechanical characterization of the developed hybrid aluminium matrix composites processed via the liquid state stir casting process The functionally graded Al6061 matrix alloy reinforced with the low-cost effective reinforcement of disposal wastage of Coconut shell Fly Ash (CSFA) and complimentary secondary SiC microparticles. The hybrid cast composites were fabricated by 4% CSFA and varying 2, 4, 6, 8, and 10wt. %SiC microparticles into the melt of Al6061 matrix. The microstructural effect on the polished surface of the produced hybrid composite was analyzed using an Optical microscope. Results revealed that the Al6061+ 4% CSFA +10%SiC composites exhibited an increased density than Al6061 + 0%CSFA+2%SiC composites. The measured hardness values and the UTS of the hybrid composites increased by 32.6% and 22.53% respectively. However, with the addition of secondary 10%SiC micro particle reinforcements to the Al6061–4%CSFA composite, the tensile strength was significantly exhibited to be decreased as compared to the 8%SiC reinforcement concentration. FESEM on the tensile fractured surface of the Al6061–4% CSFA - 8%SiC hybrid composite shown the better interfacial bonding strength and mixed mode of fracture has been noticed with minimal plastic deformation.
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Acknowledgments
The corresponding author wishes to thank the Department Of Metallurgical and Materials Engineering, National Institute of Technology, Tiruchirappalli, for providing the required facilities and necessary support in conducting experiments and discussions in the research Work.
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1st Author: Investigated and collected the existing research literature data’s, conceived and performed the experimentation and wrote the article.
2nd Author: Data analysis and interpretation on results provided.
3rd Author: Provided the scientific supports on the critical testing equipment and consolidated the results.
4th Author: Guided and provided the technical supports with the underlying mechanism.
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Hillary, J.J.M., Sundaramoorthy, R., Ramamoorthi, R. et al. Investigation on Microstructural Characterization and Mechanical Behaviour of Aluminium 6061 – CSFA / Sicp Hybrid Metal Matrix Composites. Silicon 14, 11561–11576 (2022). https://doi.org/10.1007/s12633-022-01881-7
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DOI: https://doi.org/10.1007/s12633-022-01881-7