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Archives of Mechanical Technology and Materials

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Identifying Combination of Friction Stir Welding Parameters to Maximize Strength of Lap Joints of AA2014-T6 Aluminum Alloy

C. Rajendrana
  • Corresponding author
  • Centre for Materials Joining and Research (CEMAJOR), Department of Manufacturing Engineering, Annamalai University, Annamalainagar-608002, India
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/ K. Srinivasan
  • Centre for Materials Joining and Research (CEMAJOR), Department of Manufacturing Engineering, Annamalai University, Annamalainagar-608002, India
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ V. Balasubramanian
  • Centre for Materials Joining and Research (CEMAJOR), Department of Manufacturing Engineering, Annamalai University, Annamalainagar-608002, India
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/ H. Balaji
  • Centre for Materials Joining and Research (CEMAJOR), Aeronautical Development Agency (ADA), Bangalore India
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/ P. Selvaraj
  • Centre for Materials Joining and Research (CEMAJOR), Aeronautical Development Agency (ADA), Bangalore India
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Published Online: 2017-02-24 | DOI: https://doi.org/10.1515/amtm-2017-0002

Abstract

AA2014 aluminum alloy (Al-Cu alloy) has been widely utilized in fabrication of lightweight structures like aircraft structures, demanding high strength to weight ratio and good corrosion resistance. The fusion welding of these alloys will lead to solidification problems such as hot cracking. Friction stir welding is a new solid state welding process, in which the material being welded does not melt and recast. Lot of research works have been carried out by many researchers to optimize process parameters and establish empirical relationships to predict tensile strength of friction stir welded butt joints of aluminum alloys. However, very few investigations have been carried out on friction stir welded lap joints of aluminum alloys. Hence, in this investigation, an attempt has been made to optimize friction stir lap welding (FSLW) parameters to attain maximum tensile strength using statistical tools such as design of experiment (DoE), analysis of variance (ANOVA), response graph and contour plots. By this method, it is found that maximum tensile shear fracture load of 12.76 kN can be achieved if a joint is made using tool rotational speed of 900 rpm, welding speed of 110 mm/min, tool shoulder diameter of 12 mm and tool tilt angle of 1.5°.

Keywords: Friction stir welding; Aluminum alloy; Response surface methodology; Lap joint; Tensile strength

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About the article

Received: 2016-12-23

Revised: 2017-02-09

Accepted: 2017-02-13

Published Online: 2017-02-24

Published in Print: 2017-01-26


Citation Information: Archives of Mechanical Technology and Materials, ISSN (Online) 2450-9469, DOI: https://doi.org/10.1515/amtm-2017-0002.

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© 2017. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. BY-NC-ND 4.0

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