Forecasting process parameters on weld nugget hardness of filler added friction stir welded dissimilar aluminium alloys 5052 And 6082 joints

DOI: https://doi.org/10.30464/10.30464/jmee.2021.5.2.103
Keywords: friction stir welding, center distance between the holes, filler ratio, microhardness, response surface methodology

Abstract

This article deals with the optimization of friction stir welding process parameters with filler ratios on dissimilar Aluminium alloy groups. For this purpose, 6 series Aluminium alloy 6082 and 5 series Aluminium alloy 5052 were taken. Microhardness property was conducted under various rotational speeds, welding speed, plunge depth, Center distance between the holes and filler mixing ratio. The Central Composite Design (CCD), the most commonly used Response Surface Methodology (RSM), is considered to develop the prediction equation. A validation analysis is carried out, and the results were compared with the relative impact of input parameters on weld nugget microhardness. It is observed that the increase in welding speed with plunge depth and filler ratio result in the increase of weld nugget microhardness up to a maximum value. The maximum weld nugget hardness of fabricated joint was obtained with the welding process parameters combination of 1000 rpm rotational speed, 125 mm/min welding speed, 0.15 mm plunge depth, 2 mm centre distance between the holes, and filler ratio of 95% Mg and 5% Cr.

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Author Biographies

A. Sasikumar, Assistant Professor

Sasikumar A received his M.Tech degree in Advanced Manufacturing from SASTRA University, Thanjavur, Tamilnadu, India and next Ph.D., degree in Faculty of Mechanical Engineering from Anna University, Chennai, in 2006 and 2020, respectively. Since 2013 he has been working in the Department of Production Engineering at Government College of Technology, Coimbatore where currently he works as an assistant professor. His scientific interests focus on friction stir welding and friction stir processing. He has participated in 3 international conferences, published 10 scientific papers in international journals, as well as conference proceedings.

S. Gopi, Associate Professor

Gopi S received his M.E degree in Engineering Design and Ph.D., degree in Faculty of Mechanical Engineering from Anna University, Chennai, in 2007 and 2013, respectively. Since 2006 he has been working in the Department of Production Engineering at Government College of Technology, Coimbatore where currently he works as an associate professor. His scientific interests focus on friction stir welding, production engineering and friction stir processing. He has participated in 10 international and national conferences, published 27 scientific papers in international journals, as well as conference proceedings.

Dhanesh G. Mohan, Institute of Materials Joining, Shandong University, Jinan

Dhanesh G. Mohan received his M.E degree in Manufacturing Engineering and Ph. D., degree in Faculty of Mechanical Engineering from Anna University, Chennai, in 2014 and 2019, respectively. Since 2019 he has been working in the Institute of Materials Joining, Shandong University, Jinan, China, where currently he works as a postdoctoral research fellow. His scientific interests focus on friction stir welding, additive manufacturing, high entropy alloys and friction stir processing. He has participated in 7 international conferences, published 22 scientific papers in international journals, as well as conference proceedings.

JMME 5(2) 2021 front cover
Published
2021-12-20
How to Cite
Sasikumar, A., Gopi, S. and G. Mohan, D. (2021) “Forecasting process parameters on weld nugget hardness of filler added friction stir welded dissimilar aluminium alloys 5052 And 6082 joints”, Journal of Mechanical and Energy Engineering, 5(2), pp. 103-112. doi: 10.30464/10.30464/jmee.2021.5.2.103.
Issue
Vol 5 No 2 (2021)
Section
Mechanical Engineering

Copyright (c) 2021 A. Sasikumar, S. Gopi, Dhanesh G. Mohan

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