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Effect of Reinforcements on the Sliding Wear Behavior of Self-Lubricating AZ91D-SiC-Gr Hybrid Composites

Effect of Reinforcements on the Sliding Wear Behavior of Self-Lubricating AZ91D-SiC-Gr Hybrid Composites
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Author(s): Sandeep Kumar Khatkar (Mechanical Engineering Department, Chandigarh Engineering College, Landran, India), Rajeev Verma (Industrial and Production Engineering Department, National Institute of Technology, Jalandhar, India), Suman Kant (Production and Industrial Engineering Department, Punjab Engineering College (Deemed), India)and Narendra Mohan Suri (Production and Industrial Engineering Department, Punjab Engineering College (Deemed), India)
Copyright: 2022
Volume: 10
Issue: 1
Pages: 19
Source title: International Journal of Surface Engineering and Interdisciplinary Materials Science (IJSEIMS)
Editor(s)-in-Chief: J. Paulo Davim (University of Aveiro, Portugal)
DOI: 10.4018/IJSEIMS.2022010103

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Abstract

This article statistically investigates the effect of various parameters such as material factors: silicon carbide (SiC) reinforcement, graphite (Gr) reinforcement and mechanical factors: normal load, sliding distance and speed on the sliding wear rate of vacuum stir cast self-lubricating AZ91D-SiC-Gr hybrid magnesium composites. The sliding wear tests have been performed on pin-on-disc tribometer at 10-50N loads, 1-3m/s sliding speed and 1000-2000m sliding distance. It has been examined that hybrid composites yielded improved wear resistance with reinforcement of SiC and solid lubricant graphite. ANOVA and signal-to-noise ratio investigation indicated that applied load was the most critical factor influencing the wear rate, followed by sliding distance. Further, the AZ91D/5SiC/5Gr hybrid composite has exhibited the best wear properties. From the SEM and EDS analysis of worn surfaces, delamination was confirmed as the dominant wear mechanism for AZ91D-SiC-Gr hybrid composites.

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