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Effect of process parameters on the corrosion characteristics of friction stir welded aluminum alloy AA2014-T6

Published online by Cambridge University Press:  08 January 2025

S.K. Ashok Open the ORCID record for S.K. Ashok [Opens in a new window] ,
D. Shanmugam Open the ORCID record for D. Shanmugam [Opens in a new window] ,
S. Ponni Alias Sathya Open the ORCID record for S. Ponni Alias Sathya [Opens in a new window]  and
M. Jayaraj Open the ORCID record for M. Jayaraj [Opens in a new window]
S.K. Ashok*
Affiliation:
Department of Automobile Engineering, Dr. Mahalingam College of Engineering and Technology, Pollachi, Tamilnadu, India
D. Shanmugam
Affiliation:
Department of Automobile Engineering, Dr. Mahalingam College of Engineering and Technology, Pollachi, Tamilnadu, India
S. Ponni Alias Sathya
Affiliation:
Department of Information Technology, Dr. Mahalingam College of Engineering and Technology, Pollachi, Tamilnadu, India
M. Jayaraj
Affiliation:
Department of Mechanical Engineering, Dr. Mahalingam College of Engineering and Technology, Pollachi, Tamilnadu, India
*
Corresponding author: S.K. Ashok; Email: ashokksamy@gmail.com
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Abstract

Friction stir welding (FSW) is a method of solid-state welding used to connect difficult-to-weld materials, such as aluminium alloy and magnesium alloy that cannot be joined using conventional welding techniques. This paper investigates the impact of FSW parameters on the corrosion characteristics of friction stir-welded AA2014-T6 aluminium alloy. Experiments were conducted in accordance with the Taguchi L9 orthogonal array by varying tool rotation speed, weld speed, and axial force across three levels. The FSW joints of the aluminium alloy AA2014-T6 were subjected to corrosion test using the electro-chemical workstation CHI660C. The Tafel plots and the corrosion rates were obtained from the corrosion tests. It was observed from the analysis of variance (ANOVA) results of the corrosion rates, that the tool rotation speed is the most persuading factor in controlling the corrosion rate. The scanning electron microscope (SEM) images of the corroded samples were analysed for the presence of pitting spots and its density.

Keywords

friction stir weldingcorrosion rateTafel plotaluminum alloy AA2014-T6
Type
Research Article
Information
The Aeronautical Journal , Volume 129 , Issue 1334 , April 2025 , pp. 960 - 974
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Copyright
© The Author(s), 2025. Published by Cambridge University Press on behalf of Royal Aeronautical Society

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