Skip to main content
SpringerLink
Log in

An Investigation into Microstructures and Mechanical Properties of AA7075-T6 during Friction Stir Welding at Relatively High Rotational Speeds

  • Published:
Journal of Materials Engineering and Performance Aims and scope Submit manuscript

Abstract

In this study, microstructural changes and mechanical properties during friction stir welding of AA7075-T6 have been investigated. Friction stir welding at relatively high rotational speeds ranging from 1000 to 1400 rpm and longitudinal speeds in the range of 40 to 80 mm/min have been performed and then microstructures and mechanical properties of the weldments have been studied. The results show that the rotational and longitudinal speeds have a significant effect on the microstructures as well as the mechanical behavior of the welded material while a fine grain structure is produced at higher ratio of rotational speed to longitudinal speed. On the other hand, for a given longitudinal speed, it is revealed that there is an optimum rotational speed which gives the highest tensile strength and elongation for the stirred zone.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12
Fig. 13

Similar content being viewed by others

References

  1. W.M. Thomas, E.D. Nicholas, J.C. Needham, M.G. Murch, P. Templesmith, and C.J. Dawes, Friction Stir Butt Welding, Great Britain Patent 9125978.8, 1991

  2. C.G. Rhodes, M.W. Mahoney, W.H. Bingel, R.A. Spurling, and C.C. Bampton, Effects of Friction Stir Welding on Microstructure of 7075 Aluminium, Scripta Mater., 1997, 36, p 69–75

    Article  CAS  Google Scholar 

  3. M.W. Mahoney, C.G. Rhodes, J.G. Flintoff, R.A. Spurling, and W.H. Bingel, Properties of Friction-Stir-Welded 7075 T651 Aluminum, Metall. Mater. Trans. A, 1998, 29, p 1955–1964

    Article  Google Scholar 

  4. K.A.A. Hassan, P.B. Prangnell, A.F. Norman, D.A. Price, and S.W. Williams, Effect of Welding Parameters on Nugget Zone Microstructure and Properties in High Strength Aluminium Alloy Friction Stir Welds, Sci. Technol. Weld. Join., 2003, 8, p 257–268

    Article  CAS  Google Scholar 

  5. H.J. Liu, H. Fujii, M. Maeda, and K. Nogi, Tensile Properties and Fracture Locations of Friction-Stir-Welded Joints of 2017-T351 Aluminum Alloy, J. Mater. Process. Technol., 2003, 142, p 692–696

    Article  CAS  Google Scholar 

  6. A. Barcellona, G. Buffa, L. Fratini, and D. Palmeri, On Microstructural Phenomena Occurring in Friction Stir Welding of Aluminium Alloys, J. Mater. Process. Technol., 2006, 177, p 340–343

    Article  CAS  Google Scholar 

  7. P. Cavaliere, E. Cerri, and A. Squillace, Mechanical Response of 2024-7075 Aluminium Alloys Joined by Friction Stir Welding, J. Mater. Sci., 2005, 40, p 3669–3676

    Article  CAS  ADS  Google Scholar 

  8. P. Cavaliere, R. Nobile, F.W. Panella, and A. Squillace, Mechanical and Microstructural Behaviour of 2024-7075 Aluminium Alloy Sheets Joined by Friction Stir Welding, Int. J. Mach. Tool. Manuf., 2006, 46, p 588–594

    Article  Google Scholar 

  9. J.Q. Su, T.W. Nelson, and C.J. Sterling, Microstructure Evolution During FSW/FSP of High Strength Aluminum Alloys, Mater. Sci. Eng. A, 2005, 405, p 277–286

    Article  Google Scholar 

  10. K.V. Jata, K.K. Sankaran, and J.J. Ruschau, Friction-Stir Welding Effects on Microstructure and Fatigue of Aluminum Alloy 7050-T7451, Metall. Mater. Trans. A, 2000, 31, p 2181–2192

    Article  Google Scholar 

  11. Y.S. Sato, H. Kokawa, M. Enomoto, and S. Jogan, Microstructural Evolution of 6063 Aluminium During Friction Stir Welding, Metall. Mater. Trans. A, 1999, 30, p 2429–2437

    Article  Google Scholar 

  12. N. Kamp, A. Sullivan, and J.D. Robson, Modelling of Friction Stir Welding of 7xxx Aluminium Alloys, Mater. Sci. Eng. A, 2007, 466, p 246–255

    Article  Google Scholar 

  13. P. Heurtier, M.J. Jones, C. Desrayaud, J.H. Driver, F. Montheillet, and D. Allehaux, Mechanical and Thermal Modeling of Friction Stir Welding, J. Mater. Process. Technol., 2006, 171, p 348–357

    Article  CAS  Google Scholar 

  14. M. Song and R. Kovacevic, Numerical and Experimental Study of the Heat Transfer Process in Friction Stir Welding, Proc. Inst. Mech. Eng. B: J. Eng. Manuf., 2003, 217, p 73–85

    Article  CAS  Google Scholar 

  15. Metals Handbook, 8th ed., Vol. 8, Metallography, Structures and Phase Diagrams, ASM, Metals Park, OH, 1973, p 124

  16. S. Xu and X. Deng, A Study of Texture Patterns in Friction Stir Welds, Acta Mater., 2008, 56, p 1326–1341

    Article  CAS  Google Scholar 

  17. F.J. Humphreys and M. Hatherly, Recrystallization and Related Annealing Phenomena, 2nd ed., Elsevier, New York, 2005

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Materials Science and Engineering, Sharif University of Technology, Azadi Ave., Tehran, Iran

    T. Azimzadegan & S. Serajzadeh

Authors
  1. T. Azimzadegan
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. S. Serajzadeh
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to S. Serajzadeh.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Azimzadegan, T., Serajzadeh, S. An Investigation into Microstructures and Mechanical Properties of AA7075-T6 during Friction Stir Welding at Relatively High Rotational Speeds. J. of Materi Eng and Perform 19, 1256–1263 (2010). https://doi.org/10.1007/s11665-010-9625-1

Download citation

  • Received:

  • Revised:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11665-010-9625-1

Keywords

Search

Navigation