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Activated TIG Welding of AISI 321 Austenitic Stainless Steel for Predicting Parametric Influences on Weld Strength of Tensile Test—Experimental and Finite Element Method Approach

  • S. Mohan Kumar
  • N. Siva ShanmugamEmail author
  • K. Sankaranarayanasamy
Conference paper
Part of the Lecture Notes on Multidisciplinary Industrial Engineering book series (LNMUINEN)

Abstract

Tungsten inert gas (TIG) welding is the most common manufacturing process used to join materials like stainless steel, titanium and aluminium alloys due to their high-quality and inexpensive welds. Furthermore, the difficulty in welding plates having a thickness of 4 mm or more is overcome by employing activated TIG (A-TIG) welding process which uses an activating flux for high depth of penetration in a single pass. Uni-axial tensile test is conducted to assess the tensile strength of the material by experimentation. In this study, a uni-axial tensile test of base metal (BM) and weld metal (WM) samples are simulated using ABAQUS to evaluate the accuracy of finite element (FE) simulation results with the experimental results for predicting the tensile strength. The results show that the stress–strain values predicted by the FE analysis agree with experimental results. Also, the fracture behaviour of experimentation and FE simulation is identical with ductile mode of fracture. The fracture location of the sample in FE analysis is found very similar to experimental fractured samples. The results of ferrite measurement indicate that concentration of delta-ferrite in the WM (5.9 FN) is higher than BM (1.2 FN) content and show better mechanical behaviour in the A-TIG weldments. Also, scanning electron microscope (SEM) shows that the failure of BM and WM resembled to ductile mode-type fracture.

Keywords

A-TIG welding AISI 321 Tensile test Finite element analysis Fractography 

References

  1. 1.
    Nakhodchi, S., Shokuhfar, A., Iraj, S.A., Thomas, B.G.: Evolution of temperature distribution and microstructure in multipass welded AISI 321 stainless steel plates with different thicknesses. J. Press. Vessel Technol. 137(6), 061405-1-15 (2015)Google Scholar
  2. 2.
    Fujii, H., Sato, T., Lu, S., Nogi, K.: Development of an advanced A-TIG (AA-TIG) welding method by control of Marangoni convection. Mater. Sci. Eng. A 495, 296–303 (2008)Google Scholar
  3. 3.
    Vidyarthy, R.S., Dwivedi, D.K.: Activating flux tungsten inert gas welding for enhanced weld penetration: J. Manuf. Process. 22, 211–228 (2016)Google Scholar
  4. 4.
    Joun, M., Choi, I., Eom, J., Lee, M.: Finite element analysis of tensile testing with emphasis on necking: Comput. Mater. Sci. 41, 63–69 (2017)Google Scholar
  5. 5.
    Reisgen, U., Schleser, M., Mokrov, O., Ahmed, E.: Numerical and experimental investigation of tensile behavior of laser beam welded TRIP700 steel. ISIJ Int. 51(3), 429–434 (2011)Google Scholar
  6. 6.
    Garcia-Garino, C., Gabaldon, F., Goicoleab, J.M.: Finite element simulation of the simple tension test in metals. Finite Elem. Anal. Des. 42, 1187–1197 (2006)CrossRefGoogle Scholar
  7. 7.
    Patel, A.B., Patel, S.P.: The effect of activating fluxes in TIG welding by using Anova for SS 321. Int. J. Eng. Res. Appl. 4, 41–48 (2014)Google Scholar
  8. 8.
    Mohan Kumar, S., Siva Shanmugam, N.: Studies on the weldability, mechanical properties and microstructural characterization of activated flux TIG welding of AISI 321 austenitic stainless steel. Mater. Res. Express 5, 106524, 1–48 (2018)Google Scholar
  9. 9.
    Sawakar, N., Boob, G.: Finite element based simulation of orthogonal cutting process to determine residual stress induced. Int. J. Comput. Appl. 0975–8887 (2014)Google Scholar
  10. 10.
    Liu, G.-H., Liu, M.-H., Yi, Y.-Y.: Activated flux tungsten inert gas welding of 8 mm-thick AISI 304 austenitic stainless steel. J. Cent. South Univ. 22, 800–805 (2015) Google Scholar
  11. 11.
    Pouranvari, M., Asgari, H.R., Mosavizadch, S.M., Mariachi, P.H., Goodarzi, M.: Effect of weld nugget size on overload failure mode of resistance spot welds. Sci. Technol. Weld. Join. 2, 217–225 (2007)CrossRefGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringNational Institute of Technology TiruchirappalliTiruchirappalliIndia

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