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Influence of Axial Force on Tensile Strength and Microstructural Characteristics of Friction Stir Buttwelded Aluminum Alloy/Steel Joints

In this work, the effect of axial force on the tensile strength, microhardness, joint interface microstructure and fracture surface morphology of friction stir welded (FSW) dissimilar butt joints of 3 mm thick aluminum (Al) alloy AA5052-H32 and HSLA steel IRS-M42-97 were investigated. The FSW trials were carried out by varying the axial force from 5–9 kN while keeping the other parameters constant. The highest joint strength of about 90% of the ultimate tensile strength (UTS) of the base Al alloy is obtained at 7 kN axial force. It is found that axial force in the range, 6–8 kN could produce joints with joint strength above 75% of the UTS of the base Al alloy. EDS and XRD analysis suggests that the intermetallic compound (IMC) layer formed at the joint interface is consistent with FeAl3 and FeAl at lower and higher axial forces, respectively. Joint interface analysis shows that the thickness of IMC layer formed at the interface is critical in the performance of the joint and the joint with an average IMC layer thickness of about 1 μm at the joint interface has exhibited the highest joint strength.

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  1. 1.

    U. Dilthey and L. Stein, “Multimaterial car body design: challenge for welding and joining,” Sci. Technol. Weld. Joi., 11, No. 2, 135–142 (2006).

  2. 2.

    R. Borrisutthekul, T. Yachi, Y. Miyashita, and Y. Mutoh, “Suppression of intermetallic reaction layer formation by controlling heat flow in dissimilar joining of steel and aluminum alloy,” Mater. Sci. Eng. A, 467, Nos. 1–2, 108–113 (2007).

  3. 3.

    P. Peyre, G. Sierra, F. Deschaux-Beaume, et al., “Generation of aluminum–steel joints with laser-induced reactive wetting,” Mater. Sci. Eng. A, 444, Nos. 1–2, 327–338 (2007).

  4. 4.

    L. Agudo Jácome, S. Weber, A. Leitner, et al., “Influence of filler composition on the microstructure and mechanical properties of steel–aluminum joints produced by metal arc joining,” Adv. Eng. Mater., 11, No. 5, 350–358 (2009).

  5. 5.

    H. Springer, A. Kostka, E. J. Payton, et al., “On the formation and growth of intermetallic phases during interdiffusion between low-carbon steel and aluminum alloys,” Acta Mater., 59, No. 4, 1586–1600 (2011).

  6. 6.

    R. S. Mishra, and Z. Y. Ma, “Friction stir welding and processing,” Mater. Sci. Eng. R Reports, 50, Nos. 1–2, 1–78 (2005).

  7. 7.

    C. M. Chen and R. Kovacevic, “Joiing of Al 6061 alloy to AISI 1018 steel by combined effects of fusion and solid state welding,” Int. J. Mach. Tool. Manu., 44, No. 11, 1205–1214 (2004).

  8. 8.

    H. Uzun, C. Dalle Donne, A. Argagnotto, et al., “Friction stir welding of dissimilar Al 6013-T4 To X5CrNi18-10 stainless steel,” Mater. Design, 26, No. 1, 441–469 (2005).

  9. 9.

    W.-B. Lee, M. Schmuecker, U. A. Mercardo, et al., “Interfacial reaction in steel– aluminum joints made by friction stir welding,” Scripta Mater., 55, No. 4, 355–358 (2006).

  10. 10.

    H. Springer, A. Kostka, J. F. dos Santos, and D. Raabe, “Influence of intermetallic phases and Kirkendall-porosity on the mechanical properties of joints between steel and aluminum alloys,” Mater. Sci. Eng. A, 528, Nos. 13–14, 4630–4642 (2011).

  11. 11.

    R. S. Coelho, A. Kostka, J. F. dos Santos, and A. Kaysser-Pyzalla, “Friction stir dissimilar welding of aluminum alloy to high strength steels: Mechanical properties and their relation to microstructure,” Mater. Sci. Eng. A, 556, 175–183 (2012).

  12. 12.

    K. Kimapong and T. Watanabe, “Friction stir welding of aluminum alloy to steel,” Weld. J., 83, No. 10, 277–282 (2004).

  13. 13.

    T. Watanabe, H. Takayama, and A. Yanagisawa, “Joining of aluminum alloy to steel by friction stir welding,” J. Mater. Process. Tech., 178, Nos. 1–3, 342–349 (2006).

  14. 14.

    HanSur Bang, HeeSeon Bang, GeunHong Jeon, et al., “Gas tungsten arc welding assisted hybrid friction stir welding of dissimilar materials Al6061-T6 aluminum alloy and STS304 stainless steel,” Mater. Design, 37, 48–55 (2012).

  15. 15.

    S. Kundu, D. Roy, R. Bhola, et al., “Microstructure and tensile strength of friction stir welded joints between interstitial free steel and commercially pure aluminum,” Mater. Design, 50, 370–375 (2013).

  16. 16.

    T. Yasui, M. Tsubaki, M. Fukumoto, et al., “High speed weldability between 6063 and S45C by friction stir welding. Study of welding of dissimilar metals by friction stir welding,” Weld. Int., 20, No. 4, 284–289 (2006).

  17. 17.

    M. Dehghani, A. Amadeh, and S. A. A. Akbari Mousavi, “Investigations on the effects of friction stir welding parameters on intermetallic and defect formation in joining aluminum alloy to mild steel,” Mater. Design, 49, 433–441 (2013).

  18. 18.

    M. Fukumoto, M. Tsubaki, T. Yasui, and Y. Shimoda, “Joining of ADC12 and SS400 by means of friction stir welding,” Weld. Int., 19, No. 5, 364–369 (2005).

  19. 19.

    T. P. Chen, “Process parameters study on FSW joint of dissimilar metals for aluminum–steel,” J. Mater. Sci., 44, No. 10, 2573–2580 (2009).

  20. 20.

    T. P. Chen and W.-B. Lin, “Optimal FSW process parameters for interface and welded zone toughness of dissimilar aluminum–steel joint,” Sci. Technol. Weld. Joi., 15, No. 4, 279–285 (2010).

  21. 21.

    T. Tanaka, T. Morishige, and T. Hirata, “Comprehensive analysis of joint strength for dissimilar friction stir welds of mild steel to aluminum alloys,” Scripta Mater., 61, No. 7, 756–759 (2009).

  22. 22.

    X. Liu, S. Lan, and J. Ni, “Analysis of process parameters effects on friction stir welding of dissimilar aluminum alloy to advanced high strength steel,” Mater. Design, 59, 50–62 (2014).

  23. 23.

    M. Yýlmaz, M. Çöl, and M. Acet, “Interface properties of aluminum/steel friction welded components,” Mater. Charact., 49, No. 5, 79–86 (2002).

  24. 24.

    M. Rathod and M. Kutsuna, “Joining of aluminum alloy 5052 and low carbon steel by laser roll welding,” Weld. J., 83, No. 1, 16–26 (2004).

  25. 25.

    W. S. Miller, L. Zhuang, J. Bottema, et al., “Recent development in aluminum alloys for the automotive industry,” Mater. Sci. Eng. A, 280, No. 1, 37–49 (2000).

  26. 26.

    K. K. Ramachandran, N. Murugan, and S. Shashi Kumar, “Effect of tool axis offset and geometry of tool pin profile on the characteristics of friction stir welded dissimilar joints of aluminum alloy AA5052 and HSLA steel,” Mater. Sci. Eng. A, 639, 219–233 (2015).

  27. 27.

    Vijay Shivaji Gadakh and Kumar Adepu, “Heat generation model for taper cylindrical pin profile in FSW,” J. Mater. Res. Technol., 2, No. 4, 370–375 (2013).

  28. 28.

    L. N. Larikov, Diffusion, in: J. H. Westbrook and R. L. Fleischer (Eds.), Intermetallic Compounds. Principles and Practice, Vol. 1: Principles, John Wiley & Sons, Chichester (1995), pp. 757–770.

  29. 29.

    H. Jin, S. Saimoto, M. Ball, and P. L. Threadgill, “Characterisation of microstructure and texture in friction stir welded joints of 5754 and 5182 aluminium alloy sheets,” Mater. Sci. Technol., 17, No. 12, 1605–1611 (2001).

  30. 30.

    H. Schmidt, J. Hattel, and J. Wert, “An analytical model for the heat generation in friction stir welding,” Model. Simul. Mater. Sc., 12, No. 1, 143–157 (2004).

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Correspondence to K. K. Ramachandran.

Additional information

Translated from Problemy Prochnosti, No. 2, pp. 153 – 170, March – April, 2019.

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Ramachandran, K.K., Murugan, N. Influence of Axial Force on Tensile Strength and Microstructural Characteristics of Friction Stir Buttwelded Aluminum Alloy/Steel Joints. Strength Mater 51, 300–316 (2019).

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  • welding
  • friction stir welding
  • dissimilar butt joint
  • microstructure
  • tensile strength
  • axial force