Title: Effect of impingement angle and impact velocity on slurry erosive wear behaviour of particulate reinforced aluminium composites

Authors: S. Annamalai; B. Anand Ronald; D. Ebenezer

Addresses: Department of Mechanical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, Tamil Nadu, India ' Department of Mechanical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, Tamil Nadu, India ' Department of Mechanical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, Tamil Nadu, India

Abstract: The influence of impact velocity (10, 20, and 30 m/s) and impact angle (45°, 60°, 75°, and 90°) on the slurry erosive wear behaviour of SiC-reinforced Al 2124 matrix composite was determined. The composite was synthesised by powder metallurgy route and the optical microscopic image confirmed the uniform distribution of SiC particles in the Al 2124 matrix. The microstructural analysis of the eroded surfaces showed that micro-cutting, ploughing, craters, and particle pull-out were the primary material removal mechanisms. The mass loss was observed to increase by increasing the impact velocity and the maximum mass loss was reported at 45°-60° impact angles with 30 m/s impact velocity. The XRD analysis revealed that there was no quartz inclusion on the eroded surface. The inconsistent microhardness values resulted because of the exposed SiC particles on the surface and the crater formation. The variation in average roughness significantly increased by increasing the flow velocity.

Keywords: slurry erosion; metal matrix composite; erosion wear; erodent; impingement angle.

DOI: 10.1504/IJSURFSE.2024.136661

International Journal of Surface Science and Engineering, 2024 Vol.18 No.1, pp.1 - 21

Received: 29 Mar 2023
Accepted: 13 Jun 2023
Published online: 15 Feb 2024 *

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