Abstract
Aluminium and its alloys are gaining more importance in different sectors such as aerospace, automobile, and construction industries due to their superior corrosion resistance, high strength to weight ratio, and high compressive strength. Despite this, it failed to achieve the required properties under high loading and temperature conditions. On the other hand, the reinforcement of different ceramic phases such as SiC, Al2O3, SiO2, TiO2, and CaO in the Al metal matrix can effectively improve the durability under the above-mentioned harsh conditions. Moreover, fly ash (FA) is well-known hugely available industrial waste material. So, the present objective of the study is to reinforce the SiC and FA in the Al metal matrix to prepare Al-SiC-FA hybrid composite followed by their microstructural evolution and mechanical properties evaluation under the variation in reinforcement composition and sintering temperature. The scanning electron micrographs confirm the significant advancement in interfacial bonding between the matrix and reinforcement phases with the increase in sintering temperature. Further, the micrographs also confirm that the reinforcement particles (FA and SiC) are uniformly dispersed in the Al matrix phase. The compressive strength, hardness, and density of the composite pellets are progressively increased with the increase in sintering temperature. However, the increase in FA content above 5% is accompanied by the decrease in compressive strength and hardness due to the significant rise in porosity level.
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Nanda, P.S., Samal, A.P., Dalai, R.P., Mishra, D.K. (2023). The Effect of Reinforcement Composition and Sintering Temperature on Microstructure and Properties of Al-SiC-Fly Ash Composite. In: Dutta, K., Mallik, A., Kotadia, H.R., Das, S. (eds) Processing and Characterization of Materials. ACIEQ 2021. Springer Proceedings in Materials, vol 26. Springer, Singapore. https://doi.org/10.1007/978-981-99-5509-1_8
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