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Archive of Mechanical Engineering

The Journal of Committee on Machine Building of Polish Academy of Sciences

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Volume 61, Issue 3


Effect of Tool Geometry and Welding Speed on Mechanical Properties and Microstructure of Friction Stir Welded Joints of Aluminium Alloys AA6082-T6

Hiralal Subhash Patil / Sanjay N. Soman
  • Department of Metallurgical & Material Engineering, Faculty of Engineering & Tech-nology, The M. S. University of Baroda, India
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2014-12-10 | DOI: https://doi.org/10.2478/meceng-2014-0026


Friction stir welding is a solid state innovative joining technique, widely being used for joining aluminium alloys in aerospace, marine automotive and many other applications of commercial importance. The welding parameters and tool pin profile play a major role in deciding the weld quality. In this paper, an attempt has been made to understand the influences of welding speed and pin profile of the tool on friction stir welded joints of AA6082-T6 alloy. Three different tool pin profiles (tapered cylindrical four flutes, triangular and hexagonal) have been used to fabricate the joints at different welding speeds in the range of 30 to 74 mm/min. Microhardness (HV) and tensile tests performed at room temperature were used to evaluate the mechanical properties of the joints. In order to analyse the microstructural evolution of the material, the weld’s cross-sections were observed optically and SEM observations were made of the fracture surfaces. From this investigation it is found that the hexagonal tool pin profile produces mechanically sound and metallurgically defect free welds compared to other tool pin profiles.


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About the article

Published Online: 2014-12-10

Citation Information: Archive of Mechanical Engineering, Volume 61, Issue 3, Pages 455–468, ISSN (Online) 2300-1895, DOI: https://doi.org/10.2478/meceng-2014-0026.

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© 2014 Hiralal Subhash Patil and Sanjay N. Soman. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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