Production of Aluminum/SiC/NiAl2O4 MMCs by Thixoforming of Recycled Chips

Lygia Maria Policarpio Ferreira; Maria Helena Robert; Emin Bayraktar

doi:10.4028/www.scientific.net/SSP.217-218.286

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HomeSolid State PhenomenaSolid State Phenomena Vols. 217-218Production of Aluminum/SiC/NiAl2O4 MMCs by...

Production of Aluminum/SiC/NiAl₂O₄ MMCs by Thixoforming of Recycled Chips

Abstract:

The work explores the production of Al/SiC and Al/SiC/NiAl₂O₄ composites by thixoforming compacted mixtures of AA7075 machining chips and reinforcing particles. It is analyzed the influence of processing parameters in the various processing steps, such as mixing, compacting, heating and thixoforming, in the final quality of products. Results showed the general viability of producing composites by the proposed technique; the utilization of recycling material is particularly important in the high demanding energy processing sector, as the Al industry. NiAl₂O₄particles and, in less extent, also SiC particles, can penetrate into the liquid phase present in the thixotropic microstructure within the chip, promoting their disaggregation; reinforcement distribution in the composite depends on appropriate choose of processing parameters.

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Periodical:

Solid State Phenomena (Volumes 217-218)

Pages:

286-293

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.217-218.286

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Online since:

September 2014

Authors:

Lygia Maria Policarpio Ferreira, Maria Helena Robert*, Emin Bayraktar

Keywords:

Al/NiAl₂O₄ Composites, Al/SiC, Metal Matrix Composite (MMC), Recycling Chips, Thixoforming

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