A study on the microstructure, hardness, and tribological behavior of aluminum-based metal–matrix composite fabricated through recursive friction stir processing

In this work, an Al–Zn–Mg–Cu/TiC metal–matrix composite was fabricated through recursive friction stir processing, and its microstructure, hardness, and tribological properties were investigated. Microstructure examination revealed a homogeneous dispersion of TiC particles in the matrix after six re...

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Bibliographic Details
Published in:Proceedings of the Institution of Mechanical Engineers. Part L, Journal of materials, design and applications Journal of materials, design and applications, 2021-03, Vol.235 (3), p.671-683
Main Authors: Girish, G, Anandakrishnan, V
Format: Article
Language:English
Subjects:
Aluminum
Coefficient of friction
Copper
Friction
Friction stir processing
Magnesium
Mechanical properties
Microhardness
Microstructure
Morphology
Titanium carbide
Tribology
Wear mechanisms
Wear rate
Zinc
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Summary:In this work, an Al–Zn–Mg–Cu/TiC metal–matrix composite was fabricated through recursive friction stir processing, and its microstructure, hardness, and tribological properties were investigated. Microstructure examination revealed a homogeneous dispersion of TiC particles in the matrix after six recursive passes. The grains were significantly refined and microhardness of the composite improved due to the presence of TiC particles. Friction coefficient and wear rate of the composite went up with an increase in the applied load and dropped significantly at higher sliding velocities. The morphology of the wear specimens experimented under different testing conditions was analyzed and the corresponding wear mechanisms discussed.
ISSN:1464-4207
2041-3076
DOI:10.1177/1464420720976686