Title: Investigation on dry sliding wear characterisation of (Al7075-fly ash) composite using Taguchi approach

Authors: Ankit Verma; Pardeep Kumar Sood; Sant Ram Chauhan

Addresses: Department of Mechanical Engineering, National Institute of Technology, Hamirpur, Himachal Pradesh, 177005, India ' Department of Mechanical Engineering, National Institute of Technology, Hamirpur, Himachal Pradesh, 177005, India ' Department of Mechanical Engineering, National Institute of Technology, Hamirpur, Himachal Pradesh, 177005, India

Abstract: In this research work, Stir casting was used to manufacture metal matrix composites (MMCs) with reinforcements of (150 µm) fly ash particulates and (Al7075) aluminium alloy as a matrix. Dry sliding wear testing was carried out with a pin-on-disc wear test apparatus. During the microstructure shows a uniform dispersion of particles. Adding fly ash increased tensile strength and hardness. A high-temperature pin-on-disc tribometer was used to study dry sliding wear. The impact of process factors on coefficient of friction and sliding wear behaviour were investigated using a L9 orthogonal array and an ANOVA. Coefficient of friction and wear rate were compared to normal load, sliding distance and sliding speed. The results showed straight proportionality with normal load (20-60 N) sliding speed (400-600 rpm) and inverse proportionality with percentage reinforcement (2.5-7.5%). The microstructure and worn surfaces were analysis using scanning electron microscopy.

Keywords: metal matrix composite; MMC; Al7075; fly ash; wear rate; Taguchi approach.

DOI: 10.1504/IJMATEI.2026.153158

International Journal of Materials Engineering Innovation, 2026 Vol.17 No.2, pp.117 - 133

Received: 03 Jul 2024
Accepted: 11 Oct 2024
Published online: 25 Apr 2026 *

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