Influence of Friction Stir Processing on the Hardness and Tribological Properties of Aluminium-Magnesium Alloys

Authors

  • V. Papanna Faculty of Mechanical Engineering, PES University, Bengaluru, 560100 Karnataka, India
  • Basava Kumar K.G. Global Campus, Visvesvaraya Technological University, Belagavi, 590018 Karnataka, India

DOI:

https://doi.org/10.15282/ijame.21.2.2024.19.0882

Keywords:

Friction Stir Processing, Aluminum Alloy, Hardness, Wear, Microstructure

Abstract

In this study, we have employed friction stir processing to strategically modify the microstructure of AA-Mg alloys, resulting in a direct enhancement of their mechanical properties. The experiments encompassed a range of tool speeds ranging from 800 to 1600 rpm and feed rates ranging from 20 to 80 mm/min. Employing a single-pass approach across all combinations, samples were extracted from the stir zone region to evaluate hardness and wear characteristics. The evaluation involved Vickers hardness tests to quantify hardness and pin-on-disc tests to examine the tribological attributes of the specimens. The worn-out surfaces of the specimens were examined using scanning electron microscope imagery. There is a substantial increase in hardness when compared with the base material, i.e., 78 HVN is up to 96 HVN for 20 mm/min at 1200 rpm, 98 HVN for 20 mm/min at 800 rpm, 106 HVN for 60 mm/min at 1600 rpm and 96 HVN for 80 mm/min at 1600 rpm. Furthermore, the coefficient of friction increased from 0.341 for base materials to a maximum of 0.635, 0.667, 0.604, and 0.646 for the same combination of speed and feed rate, respectively. The maximum change in percentage is 26% in hardness and 49% in wear coefficient.

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Published

2024-06-21

How to Cite

[1]
V. Papanna and K. G. Basava Kumar, “Influence of Friction Stir Processing on the Hardness and Tribological Properties of Aluminium-Magnesium Alloys”, Int. J. Automot. Mech. Eng., vol. 21, no. 2, pp. 11426–11437, Jun. 2024.

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