Investigation on Tribological Characteristics of Al 7075 MMNC: Behavior of Micro- and Nano-Sized Composites

Sonagiri Suresh; Baridu Vinod; Sangireddy Sunil Kumar Reddy; Uthirapathi Elaiyarasan

doi:10.46604/peti.2022.8943

Authors

Sonagiri Suresh Department of Mechanical Engineering, Siddharth Institute of Engineering & Technology, Puttur, India
Baridu Vinod Department of Mechanical Engineering, Siddharth Institute of Engineering & Technology, Puttur, India
Sangireddy Sunil Kumar Reddy Department of Mechanical Engineering, Siddharth Institute of Engineering & Technology, Puttur, India
Uthirapathi Elaiyarasan Department of Automobile Engineering, Easwari Engineering College, Chennai, India

DOI:

https://doi.org/10.46604/peti.2022.8943

Keywords:

MMNC, mechanical characterization, liquid casting process, surface morphology, XRD analysis

Abstract

This study investigates the mechanical properties and the wear behavior of Al 7075/Al₂O₃/SiCNP composites. The hybrid composites are manufactured using the stir casting technique. In this work, the Al 7075 alloy is reinforced with five different weight fractions of Al₂O₃ and a constant SiCNp, with an average particle size of 50 nm. The aluminum metal matrix composites are examined through surface morphology and X-ray diffraction (XRD) patterns to identify the material behavior. The material characteristics and the wear behavior of the metal composites are examined using a pin-on-disk test. Wear measurements are performed by varying loads, sliding speeds, and sliding distances. The results reveal that the composites reinforced with 4% of Al₂O₃ particulates exhibit superior properties. The wear rate and the coefficient of friction (COF) decrease with the increase in the reinforcement content.

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