Fabrication of AA6061-0/RHA Surface Composite via Friction Stir Processing

Abstract:

Friction stir processing is a novel process evolved to fabricate surface metal matrix composites. Rice husk ash (RHA) is an agro-industrial waste and by product of rice husk. The feasibility of incorporating RHA powder into aluminium alloy AA6061-0 as reinforcement particles to make surface matrix composite via FSP is reported in this paper. The optical micrographs revealed a homogeneous distribution of RHA particles which were well bonded with the matrix in both first and fourth-passes of the FSP due to mechanical stirring. Microhardness of the stir zone SZ with the RHA particles of I-pass increased to about 106 HV, 40% higher than that of the base material 66 HV by dispersed RHA particles.

• Periodical: Applied Mechanics and Materials (Volume 660)
• Pages: 214-218
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.660.214
• Online since: October 2014
• Authors: Samir Sani Abdulmalik, Rosli Ahmad
• Keywords: AA6061-0 Alloy, Annealing Effect, Friction Stir Processing, Metal Matrix Composite (MMC), Microhardness, Microstructure, Rice Husk Ash (RHA)

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