Metallurgical and Mechanical Characterization of Al 6082-B4C/Si3N4 Hybrid Composite Manufactured by Combined Ball Milling and Stir Casting

Pardeep Sharma; Dinesh Khanduja; Satpal Sharma

doi:10.4028/www.scientific.net/AMM.592-594.484

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 592-594Metallurgical and Mechanical Characterization of...

Metallurgical and Mechanical Characterization of Al 6082-B₄C/Si₃N₄ Hybrid Composite Manufactured by Combined Ball Milling and Stir Casting

Abstract:

Aluminium matrix composites (AMCs) having more than one reinforcement (hybrid AMCs) found enlarged use due to better strength, high thermal stability and wear resistance properties and can be a substitute for single reinforced AMCs .The effect of varying ball milled (BM) B₄C/Si₃N₄ particles on the microstructure of as cast AA6082 and mechanical properties of AA6082 alloy hybrid composites produced by combined ball milling and conventional stir casting method have been reported. The combined reinforcement of BM B₄C/Si₃N₄ particles were varied from 0-9 % in a step of 3. The wettability of B₄C/Si₃N₄ into the aluminium melt has been increased by ball milling the boron carbide with silicon nitride powder, so that combined reinforcement of B₄C/Si₃N₄ neither float nor sink in the aluminium melt. The investigated result showed that addition of combined reinforcement of BM B₄C/Si₃N₄ increased Hardness and Ultimate tensile strength at the cost of reduction in percentage elongation.

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Periodical:

Applied Mechanics and Materials (Volumes 592-594)

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484-488

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.592-594.484

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Online since:

July 2014

Authors:

Pardeep Sharma*, Dinesh Khanduja, Satpal Sharma

Keywords:

Aluminum Matrix Composite (AMC), Hybrid Composite, Mechanical Property, Metal Matrix Composite (MMC), Microstructure

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