Processing, Characterization and Fractography of Dual Step Stir Casted Al6061/(Si3N4+SiC) Composites

Processing, Characterization and Fractography of Dual Step Stir Casted Al6061/(Si3N4+SiC) Composites
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© 2021 by IJETT Journal
Volume-69 Issue-7
Year of Publication : 2021
Authors : Ranjeet Kumar Arya, Amit Telang
DOI :  10.14445/22315381/IJETT-V69I7P234

How to Cite?

Ranjeet Kumar Arya, Amit Telang, "Processing, Characterization and Fractography of Dual Step Stir Casted Al6061/(Si3N4+SiC) Composites," International Journal of Engineering Trends and Technology, vol. 69, no. 7, pp. 270-277, 2021. Crossref, https://doi.org/10.14445/22315381/IJETT-V69I7P234

Abstract
The present research article discusses fabrication, micro structural investigation and mechanical behavior of Al6061/(Si3N4+SiC) composite. High strength at the cost of toughness is very often in metallic composites reinforced with hard ceramic particles. Aerospace, automobile and marine industries demand tough and high strength materials. Simultaneous improvement in strength and fracture toughness is the major concern of the current study. To attain the objective, two reinforcement particles of dissimilar shape and sizes were chosen. Small quantity of micron sized SiC particles and elongated rodlike submicron Si3N4 particles were utilized to reinforce the Al6061 alloy matrix. Aforementioned combination of reinforcement and aluminium matrix is unique in itself. Three different compositions including base alloy were fabricated by two step stir casting method for analysis. For micro structural characterization, an optical microscope and FESEM (field emission scanning electron microscope) with EDS were used. Fractured surface of the tensile test was also investigated by FESEM.

Keywords
Elongated rodlike submicron Si3N4, Al6061/( Si3N4+SiC) composite, Two step stir casting, FESEM, Fractured surface analysis.

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