Tribological Behavior and Hardness Properties of Heat Treated Al 7075-Beryl-Graphene Hybrid Metal Matrix Composites
Shanawaz Patil1, Mohamed Haneef2

1Shanawaz Patil, PhD Research Scholar, VTU Belegavi and Assistant Professor, REVA University, Bengaluru, Karnataka, India.
2Dr. Mohamed Haneef, Professor & Director (R&D), Ghousia College of Engineering, Ramanagara, Karnataka, India.

Manuscript received on 06 August 2019. | Revised Manuscript received on 14 August 2019. | Manuscript published on 30 September 2019. | PP: 4808-4815 | Volume-8 Issue-3 September 2019 | Retrieval Number: C6868098319/2019©BEIESP | DOI: 10.35940/ijrte.C6868.098319
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Abstract: The emerging technologies and trends of the present generation require downsizing the unwieldy structures to lightweight structures. Aluminum matrix composites are tailored candidate materials for aerospace applications due to their outstanding greater strength to weight ratio and low wear rate. In this study, Al7075 alloy-Beryl-Graphene hybrid composites are developed by using stir casting process. Graphene weight percentage was varied from 0 wt. % to 2 wt. % in steps of 0.5 wt. %. Whereas for Beryl 6 wt. % is used thorough out the study. The casted specimens were heat-treated at T6 solutionizing temperature of 530±5oC for 8 hours. After the heat treatment the specimen are quenched in boiling Water and Ice. The microstructure of the newly developed hybrid MMCs has been investigated by TEM and SEM. The microstructural study reveals the uniform distribution of reinforcement into matrix materials. The hardness and wear behavior of matrix and hybrid composites before and after heat treatment examined by Brinell hardness test and Pin-on-disc test machine respectively. The heat-treated Al7075-Beryl-Graphene hybrid composites significantly improved the hardness and low wear rate compared to base matrix Al7075 alloy.
Index terms: Al7075, Beryl, Graphene, SEM, TEM

Scope of the Article:
Properties and Mechanics of Concrete