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Characterization of the Influence of Tool Pin Profile on Microstructural and Mechanical Properties of Friction Stir Welding

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Abstract

In this study, the effect of tool pin profile on mechanical properties, microstructural, material flow, thermal and strain distributions of friction stir welding of AA5083 was investigated. Two different tools with cylindrical and square pin profiles were employed to produce the welds. A numerical model is developed for investigating the effect of tool pin profiles on material flow, thermal and strain distributions based on thermo-mechanically coupled rigid-viscoplastic 3D FEM. Then, optical microscopy was employed to characterize the microstructures features of the weld. Finally, tensile test was carried out to characterize the mechanical properties of the weld. Obtained results showed that square pin profile produced finer grain structure and higher ultimate strength relative to cylindrical one. These results may be related to higher eccentricity, larger stirred zone, and higher temperature in the weld zone of the square pin profile.

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Authors and Affiliations

  1. School of Automotive Engineering, Iran University of Science and Technology, Tehran, Iran

    Javad Marzbanrad (Associate Professor) & Mostafa Akbari (Ph.D Student)

  2. School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran

    Parviz Asadi (Ph.D Student)

  3. School of Mechanical Engineering, Karaj Campus, University of Tehran, Tehran, Iran

    Samad Safaee (M.Sc. Student)

Authors
  1. Javad Marzbanrad
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  2. Mostafa Akbari
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  3. Parviz Asadi
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  4. Samad Safaee
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Correspondence to Javad Marzbanrad.

Additional information

Manuscript submitted February 8, 2014.

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Marzbanrad, J., Akbari, M., Asadi, P. et al. Characterization of the Influence of Tool Pin Profile on Microstructural and Mechanical Properties of Friction Stir Welding. Metall Mater Trans B 45, 1887–1894 (2014). https://doi.org/10.1007/s11663-014-0089-9

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  • DOI: https://doi.org/10.1007/s11663-014-0089-9

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