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Dry Sliding-Friction and Wear Behavior of Hot-Extruded Al6061/Si3N4/Cf Hybrid Metal Matrix Composite.

Ramesh, C.S., Khan, S. and Khan, Z. A., 2020. Dry Sliding-Friction and Wear Behavior of Hot-Extruded Al6061/Si3N4/Cf Hybrid Metal Matrix Composite. Journal of Materials Engineering and Performance, 29, 4474-4483.

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DOI: 10.1007/s11665-020-04940-5

Abstract

The effects of reinforcement addition and hot extrusion on the microstructures, micro hardness, friction, and wear behavior of aluminium (Al) hybrid composite were investigated. Al6061 dispersed with electroless nickel-coated Si3N4 (6wt.%) and copper-coated carbon fiber (Cf) (1wt.%) hybrid composites was developed through stir casting followed by hot extrusion. Optical micro structural studies confirmed that the size of reinforcements decreased, and their orientations were in the extrusion direction. The decrease in the grain size (29%) of hybrid composites was larger than that in the grain size of matrix alloys under hot-extruded conditions. The synthesized hot-extruded Al6061 hybrid composite exhibited a lower coefficient of friction (51%) and high wear resistance (39%) compared with the hotextruded Al6061base alloy.

Item Type:Article
ISSN:1059-9495
Uncontrolled Keywords:hybrid composite; hot extrusion; Si3N4; carbon fibers; coefficient of friction (COF); wear rates
Group:Faculty of Science & Technology
ID Code:34247
Deposited By: Unnamed user with email symplectic@symplectic
Deposited On:06 Jul 2020 14:01
Last Modified:01 Sep 2020 15:56

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