Processing and Mechanical Characterization of ADC12 alloy-B4C-RHA Hybrid Composites
R Murali Mohan1, U N Kempaiah2, Seenappa3, Madeva Nagaral4

1R Murali Mohan, Research Scholar, Dept. of Mechanical Engineering, University Visveswaraya College of Engineering Bangalore, India,
2U N Kempaiah, University Visveswaraya College of Engineering Bangalore, India.
3Seenappa, Associate Professor, Department of Mechanical Engineering, Government Engineering College, Ramanagara, Karnataka, Inida.
4Madeva Nagaral, Deputy Manager, Aircraft Research and Design Centre, HAL, Bangalore, India.
Manuscript received on November 22, 2019. | Revised Manuscript received on December 15, 2019. | Manuscript published on December 30, 2019. | PP: 2239-2244 | Volume-9 Issue-2, December, 2019. | Retrieval Number:  B3221129219/2019©BEIESP | DOI: 10.35940/ijeat.B3221.129219
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Abstract: The effects of dual particulates addition on the mechanical behaviour of ADC12 alloy composites were studied. Boron carbide (B4C) and rice husk ash (RHA) particulates were used as the reinforcements in the ADC12 alloy base matrix. Hybrid composites were prepared by using liquid melt method, keeping 5 wt. % of B4C reinforcement constant and varying rice husk ash particles in steps of 3 and 6 wt. % in the ADC12 alloy. Samples were tested for microstructural characterization by using SEM and EDS. Mechanical behaviour like hardness, ultimate tensile strength; yield strength, percentage elongation and compression strength were evaluated as per ASTM standards. SEM photographs revealed the uniform distribution of B4C and RHA particulates in the ADC12 alloy and these particles were confirmed by EDS analysis. Further, hardness, tensile and compression properties of base matrix ADC12 alloy was enhanced with the addition of B4C and RHA particulates. Ductility of ADC12 alloy decreased after the incorporation of B4C and RHA particles.
Keywords: ADC12 Alloy, Boron Carbide, Rice Husk Ash, Stir Casting, Microstructure, Mechanical Properties.