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Effect of Post Weld Heat Treatment on Strength and Microstructure of Friction Stir Welded Lap Joints of AA2014-T6 Aluminum Alloy

  • C. RajendranEmail author
  • K. Srinivasan
  • V. Balasubramanian
  • H. Balaji
  • P. Selvaraj
Article
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Lap joints of AA2014 aluminum alloy produced by friction stir welding and subjected to post weld heat treatment have been studied. The shear strength and hardness of the welded joints were determined. The structure of the weld and weld-affected zone was studied. A fractographic analysis of the fracture surface of the tested samples was performed. The post weld heat treatment modes were established to enable recovery of the mechanical properties of the welded joints.

Key words

aluminum alloy friction stir welding post weld heat treatment strength 

Notes

The authors gratefully acknowledge the financial support from the Aeronautical Development Agency (ADA), Bangalore, through an R&D project No. FSED 83.07.03 to carry out this study.

References

  1. 1.
    C. Zhou, X. Yang, and G. Luan, “Effect of root flaws on the fatigue property of friction stir welds in 2024-T3 aluminum alloys,” Mater. Sci. Eng. A, 418, 155 – 160 (2006).CrossRefGoogle Scholar
  2. 2.
    A. Squillance, A. De Renzo, G. Giorleo, and F. Bellucci, “A comparison between FSW and TIG welding techniques: modification of microstructure and pitting corrosion resistance in AA2024-T3 butt joints,” J. Mater. Proc. Tech., 152, 97 – 105 (2004).CrossRefGoogle Scholar
  3. 3.
    C. Genevosis, A. Deschamps, A. Denquin, and B. Doisneaucoottignies, “Quantitative investigation of precipitation and mechanical behavior for AA2024 friction stir welds,” Acta Mater., 53, 2447 – 2458 (2005).CrossRefGoogle Scholar
  4. 4.
    H. J. Liu, H. J. Zhang, and L. Yu, “Effect of welding speed on microstructures and mechanical properties of underwater friction stir welded 2219 aluminum alloy,” Mater. Design., 32, 1548 – 1553 (2011).CrossRefGoogle Scholar
  5. 5.
    Z. Zang, B. L. Xiao, and Z. Y. Ma, “Influence of water cooling on microstructure and mechanical properties of friction stir welded 2014Al-T6 joints,” Mater. Eng. A, 614, 6 – 15 (2014).CrossRefGoogle Scholar
  6. 6.
    W. Ji, R. Fu, Y. Li, and J. Zang, “Effects of deep cryogenic treatment and low temperature aging on the mechanical properties of friction-stir-welded joints of 2024-T351 aluminum alloy,” Mater. Sci. Eng. A, 609, 147 – 153 (2014).CrossRefGoogle Scholar
  7. 7.
    P. Sivaraj, D. Kanagarajan, and V. Balasubramanian, “Effect of post weld heat treatment on tensile and microstructure characteristics of friction stir welded armor grade AA7075-T561 aluminum alloy,” Def. Tech., 10, 1 – 8 (2014).CrossRefGoogle Scholar
  8. 8.
    H. Aydin, A. Bayram, A. Uguz, and S. K. Akay, “Tensile properties of friction stir welded joints of 2024 aluminum alloys in different heat treated state,” Mater. Design, 30, 2211 – 2221 (2009).CrossRefGoogle Scholar
  9. 9.
    Z. Hu, S. Yuan, X. Wang, et al., “Effect of post-weld heat treatment on the microstructure and plastic deformation of friction stir welded 2024,” Mater. Design, 32, 5055 – 5060 (2011).CrossRefGoogle Scholar
  10. 10.
    R. Fu, J. Zhang, Y. Li, et al., “Effect of welding heat input and post-welding natural aging on the hardness of stir zone for friction stir-welded 2024-T3 aluminum alloy thin sheet,” Mater. Sci. Eng. A,599, 319 – 324 (2013).CrossRefGoogle Scholar
  11. 11.
    C. Sharma, D. K. Dwivedi, and P. Kumar, “Effect of post weld heat treatments on microstructure and mechanical properties of friction stir welded joints or Al – Zn – Mg alloy AA7039,” Mater. Design,43, 134 – 143 (2013).CrossRefGoogle Scholar
  12. 12.
    S. Babu, G. D. Janaki Ram, P. V. Venkitakrishnan, et al., “Microstructure and mechanical properties of friction stir lap welded aluminum alloy AA2014,” Mater. Sci. & Tech., 28, 414 – 426 (2012).CrossRefGoogle Scholar
  13. 13.
    K. Elangovan and V. Balasubramanian, “Influences of postweld heat treatment on tensile properties of friction stir-welded AA6061 aluminum alloy joints,” Mater. Char., 59, 1168 – 1177 (2007)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • C. Rajendran
    • 1
    Email author
  • K. Srinivasan
    • 2
  • V. Balasubramanian
    • 2
  • H. Balaji
    • 3
  • P. Selvaraj
    • 3
  1. 1.Sri Krishna College of Engineering and TechnologyCoimbatoreIndia
  2. 2.Annamalai UniversityTamilnaduIndia
  3. 3.Aeronautical Development AgencyBangaloreIndia

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