Microstructures and mechanical properties of dissimilar Nd:YAG laser weldments of AISI4340 and AISI316L steels

  • A. R. Sufizadeh
  • S. A. A. Akbari Mousavi


This paper presents studies on the microstructure and mechanical properties of AISI 316L stainless steel and AISI 4340 low-alloy steel joints formed by the Nd:YAG laser welding process. The weld microstructures and heat affected zones (HAZs) were investigated. Austenitic microstructures were observed in all of the samples. The sizes of the HAZs changed when the heat input was varied, and the 316L sides exhibited a larger HAZ. The cooling rates were calculated by measuring the solidification dendrite arm spacing. It is shown that high cooling rates lead to an austenitic microstructure. Tensile tests were carried out, and the results revealed the tensile properties of both the base metals and the weldments. The hardness test results agreed well with the tensile test results.


stainless steel laser welding welded joints microstructure mechanical properties cooling rate 


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  1. [1]
    Y.F. Tzeng, Process characterisation of pulsed Nd:YAG laser seam welding, Int. J. Adv. Manuf. Technol., 16(2000, No. 1, 10.CrossRefGoogle Scholar
  2. [2]
    M. Rossini, P.R. Spena, L. Cortese, P. Matteis, and D. Firrao, Investigation on dissimilar laser welding of advanced high strength steel sheets for the automotive industry, Mater. Sci. Eng. A, 628(2015, 288.CrossRefGoogle Scholar
  3. [3]
    S.A.A. Akbari Mousavi and A.R. Sufizadeh, Metallurgical investigations of pulsed Nd:YAG laser welding of AISI 321 and AISI 630 stainless steels, Mater. Des., 30(2009, No. 8, 3150.CrossRefGoogle Scholar
  4. [4]
    R.P. Martukanitz, A critical review of laser beam welding, [in] Proceedings of the International Society for Optical Engineering, San Jose, California, 2005, p. 11.Google Scholar
  5. [5]
    J.R. Berretta, W. de Rossi, M.D.M. das Neves, I.A. de Almeida, and N.D.V. Junior, Pulsed Nd:YAG laser welding of AISI 304 to AISI 420 stainless steels, Opt. Lasers Eng., 45(2007, No. 9, 960.CrossRefGoogle Scholar
  6. [6]
    N. Arivazhagan, S. Singh, S. Prakash, and G.M. Reddy, Investigation on AISI 304 austenitic stainless steel to AISI 4140 low alloy steel dissimilar joints by gas tungsten arc, electron beam and friction welding, Mater. Des., 32(2011, No. 5, 3036.CrossRefGoogle Scholar
  7. [7]
    M.J. Torkamany, J. Sabbaghzadeh, and M.J. Hamedi, Effect of laser welding mode on the microstructure and mechanical performance of dissimilar laser spot welds between low carbon and austenitic stainless steels, Mater. Des., 34(2012, 666.CrossRefGoogle Scholar
  8. [8]
    M.M.A. Khan, L. Romoli, M. Fiaschi, G. Dini, and F. Sarri, Laser beam welding of dissimilar stainless steels in a fillet joint configuration, J. Mater. Process. Technol., 212(2012, No. 4, 856.CrossRefGoogle Scholar
  9. [9]
    A.G. Olabi, F.O. Alsinani, A.A. Alabdulkarim, A. Ruggiero, L. Tricarico, and K.Y. Benyounis, Optimizing the CO2 laser welding process for dissimilar materials, Opt. Lasers Eng., 51(2013, No. 7, 832.CrossRefGoogle Scholar
  10. [10]
    S.H. Baghjari and S.A.A. AkbariMousavi, Experimental investigation on dissimilar pulsed Nd:YAG laser welding of AISI 420 stainless steel to kovar alloy, Mater. Des., 57(2014, 128.CrossRefGoogle Scholar
  11. [11]
    N. Özdemir, F. Sarsilmaz, and A. Hasçalik, Effect of rotational speed on the interface properties of friction-welded AISI 304L to 4340 steel, Mater. Des., 28(2007, No. 1, 301.CrossRefGoogle Scholar
  12. [12]
    A. Hasçalik, E. Ünal, and N. Özdemir, Fatigue behavior of AISI 304 steel to AISI 4340 steel welded by friction welding, J. Mater. Sci., 41(2006, No. 11, 3233.CrossRefGoogle Scholar
  13. [13]
    V.A. Ventrellaa, J.R. Berretta, and W. de Rossi, Pulsed Nd:YAG laser seam welding of AISI 316L stainless steel thin foils, J. Mater. Process. Technol., 210(2010, No. 14, 1838.CrossRefGoogle Scholar
  14. [14]
    N. Kumar, M. Mukherjee, and A. Bandyopadhyay, Comparative study of pulsed Nd:YAG laser welding of AISI 304 and AISI 316 stainless steels, Opt. Lasers Eng., 88(2017, 24.CrossRefGoogle Scholar
  15. [15]
    B. Kurt, The interface morphology of diffusion bonded dissimilar stainless steel and medium carbon steel couples, J. Mater. Process. Technol., 190(2007, No. 1–3), 138.CrossRefGoogle Scholar
  16. [16]
    M. Vedani, Microstructural evolution of tool steels after Nd-YAG laser repair welding, J. Mater. Sci., 39(2004, No. 1, 241.CrossRefGoogle Scholar
  17. [17]
    Y. Wu, Y. Cai, D.W. Sun, J.J. Zhu, and Y.X. Wu, Microstructure and properties of high-power laser welding of SUS304 to SA553 for cryogenic applications, J. Mater. Process. Technol., 225(2015, 56.CrossRefGoogle Scholar
  18. [18]
    ASTM E8/E8M-08, Standard Test Methods for Tension Testing of Metallic Materials, ASTM International, West Conshohocken, PA, 2008.Google Scholar
  19. [19]
    J.C. Lipoid and D.J. Kotecki, Welding Metallurgy and Weldability of Stainless Steels, 2nd Ed., John Wiley & Sons Inc., New York, 2005, p. 143.Google Scholar
  20. [20]
    S. Kou, Welding Metallurgy, 2nd Ed., John Wiley & Sons Inc., New Jersey, 2003, p. 279.Google Scholar
  21. [21]
    J.M. Vitek, S.A. David, and C.R. Hinman, Improved ferrite number prediction model that accounts for cooling rate effects: Part 1. Model development, Weld. J., 82(2003, No. 1, 10.Google Scholar
  22. [22]
    J.W. Elmer, S.M. Allen, and T.W. Eagar, Microstructural development during solidification of stainless steel alloys, Metall. Trans. A, 20(1989, No. 10, 2117.CrossRefGoogle Scholar
  23. [23]
    M.A. Valiente-Bermejo, L. Karlsson, and T. DebRoy, Influence of low energy laser welding on solidification and microstructure of austenitic stainless steel welds, [in] The 14th Nordic Laser Materials Processing Conference NOLAMP 14, Gothenburg, 2013, p. 26.Google Scholar

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© University of Science and Technology Beijing and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  1. 1.School of Metallurgy and Materials Engineering, College of EngineeringUniversity of TehranTehranIran

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