A Study on microstructure, mechanical and fracture behavior of Al2O3 - MoS2 reinforced Al6061 hybrid composite

K. R. Suchendra; Reddy M  Sreenivasa; M. Ravikumar

doi:10.3221/IGF-ESIS.61.16

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Published Jun 19, 2022

DOI https://doi.org/10.3221/IGF-ESIS.61.16

K. R. Suchendra

Department of Mechanical Engineering, R L Jalappa Institute of Technology, Bangalore (R), Karnataka, India

Reddy M Sreenivasa

Department of Mechanical Engineering, R L Jalappa Institute of Technology, Bangalore (R), Karnataka, India

M. Ravikumar

B M S Evening College of Engineering, India

Abstract

Al composites usage is growing and is gaining importance in aerospace, automotive and marine industries due to their excellent characteristics. Aluminum composites exhibit high resistance to wear and corrosion, possess high strength, offer durability and more such properties. In this study, Al 6061 alloy, reinforced with Al₂O₃ - MoS₂ was produced by a stir casting technique and its microstructure and mechanical behavior were evaluated. Reinforcements were added in the range of 0 - 9 wt. %. The microstructure analysis, tensile and compressive strength of the hybrid MMCs (Metal Matrix Composites) have been analyzed and examined. From the investigational study, it was found that the reinforcing particulates are evenly dispersed in the base matrix. The porosity and density of the hybrid composites were found to be enhanced. The ultimate tensile and compressive strength of the hybrid MMCs could be improved by addition of ceramic (Al₂O₃) particulates compared to monolithic. Further, the strength of hybrid composites was decreased by adding of MoS₂ (solid lubricant) along with hard ceramic particulates. Finally, fractured surface of the UTS test specimens were analysed using a SEM analysis.

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Issue

Vol. 16 No. 61 (2022): July 2022

Section

Fracture

How to Cite

Suchendra, K. R., Sreenivasa, R. M. . and Ravikumar, M. (2022) “A Study on microstructure, mechanical and fracture behavior of Al2O3 - MoS2 reinforced Al6061 hybrid composite”, Frattura ed Integrità Strutturale, 16(61), pp. 244–253. doi: 10.3221/IGF-ESIS.61.16.

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