Welding in the World

, Volume 60, Issue 5, pp 1001–1008 | Cite as

Numerical simulation of solidification crack formation during laser beam welding of austenitic stainless steels under external load

  • N. BakirEmail author
  • A. Gumenyuk
  • M. Rethmeier
Research Paper


Solidification cracking phenomena taking place under controlled tensile weldability (CTW) test conditions have already been investigated both experimentally and numerically via FEA in order to get a better understanding of the mechanisms of hot crack formation during laser beam welding of austenitic steel grades. This paper develops a three-dimensional finite element model employing the contact element technique to simulate the formation and propagation of solidification cracks during laser full penetration welding of fully austenitic stainless steel 1.4376. During the experimental procedure, the resulting strain and displacement directed to the laser beam in the close vicinity of the weld pool was measured at the surface of the workpiece using a digital image correlation (DIC) technique with an external diode laser as an illuminating source. Local strain fields, global loads and crack lengths predicted by the model are in good agreement with those observed in experiments.

Keywords (IIW Thesaurus)

Solidification cracking Finite element analysis Imaging Laser welding Austenitic stainless steels Loading 



The authors would like to thank Karin Schlechter, Sören Hähnel and Thomas Paeschke who greatly contributed to the experimental part of the presented results.

Compliance with ethical standards


This work was supported by the Research Association for Steel Application (FOSTA), the Federation of Industrial Research Associations AiF, and the German Federal Ministry for Trade, Industry and Technology (BMWi Bundesministerium für Wirtschaft und Technologie) (Project 17781 N, ‘Development of a method for the investigation of hot cracking resistance of laser welded joints’).


  1. 1.
    Prokhorov NN (1962) The technological strength of metals while crystallising during welding. Svar Proizvod 4:1–8Google Scholar
  2. 2.
    Prokhorov NN (1956) The problem of the strength of metals while solidifying during welding. Svar Proizvod 6:5–11Google Scholar
  3. 3.
    Prokhorov NN, Gavrilyuk MN (1971) Strain behavior of metals during solidification after welding. Svar Proizvod 18(6):5–9Google Scholar
  4. 4.
    Rappaz M, Drezet J-M, Gremaud M (1999) A new hot-tearing criterion. Metall Mater Trans A 30(2):449–455CrossRefGoogle Scholar
  5. 5.
    Monroe C, Beckermann C (2005) Development of a hot tear indicator for steel castings. Materials Science and Engineering A, vol. 413–414, no. July, pp. 30–36Google Scholar
  6. 6.
    Farup I, Mo A (2000) Two-phase modeling of mushy zone parameters associated with hot tearing. Metall Mater Trans 31A:1461–1472CrossRefGoogle Scholar
  7. 7.
    Katgerman L, Eskin D (2008) In search of the prediction of hot cracking in aluminium alloys. Hot cracking phenomena in welds IIGoogle Scholar
  8. 8.
    Lees D, Marschall W (1946) The hot-tearing tendencies of aluminium casting. J Inst Met 72(12):644–646Google Scholar
  9. 9.
    Saveiko V (1961) Theory of hot tearing. Russ Cast ProdGoogle Scholar
  10. 10.
    Zacharia T, Aramayo GA (1993) Modeling of thermal stresses in welds. In: Modeling and Control of Joining ProcessGoogle Scholar
  11. 11.
    Zacharia T (1994) Dynamic stresses in weld metal hot cracking. Welding Research Supplement, pp. 164–172Google Scholar
  12. 12.
    Dye D, Hunziker O, Reed R (2001) Numerical analysis of the weldability of superalloys. Acta MaterialiaGoogle Scholar
  13. 13.
    Shibara M, Serizawa H, Murakawa H (2000) Finite element method for hot cracking using temperature dependent interface element (Report II). Trans JWRI 29(1):59–64Google Scholar
  14. 14.
    Shibahara M, Itoh S, Serizawa H, Murakawa H (2005) Numerical prediction of welding hot cracking using three-dimensional FEM with temperature dependent interface element. Weld World 49(11/12):50–57CrossRefGoogle Scholar
  15. 15.
    Shibahara M, Serizawa H, Murakawa H, Ueda Y (2001) Finite element analysis of hot cracking under welding using temperature-dependent interface element. vol. li, pp. 297–303Google Scholar
  16. 16.
    Mitsunari H, Mori H, Kon S, Shibahara M (2015) Effects of strain and contents of impurity elements on center-line crack susceptibility in laser beam welds of type 316L stainless steel. 溶接学会論文集Google Scholar
  17. 17.
    Bakir N, Gumenyuk A, Rethmeier M (2015) Using optical measuring to investigate the hot cracking susceptibility of laser welded joints. Lasers in Manufacturing 2015. Munich, GermanyGoogle Scholar
  18. 18.
    Quiroz V, Gumenyuk A, Rethmeier M (2012) Investigations on laser beam welding of high-manganese austenitic and austenitic-ferritic stainless steels. The Paton Welding JGoogle Scholar
  19. 19.
    Quiroz V, Gumenyuk A, Rethmeier M (2012) Investigation of the hot cracking susceptibility of laser welds with the controlled tensile weldability test. J Strain Anal Eng DesGoogle Scholar
  20. 20.
    Schwenk C, Rethmeier M (2011) Material properties for welding simulation—measurement, analysis, and exemplary data. Welding JGoogle Scholar
  21. 21.
    Goldak JA, Akhlaghi M (2005) Computational welding mechanics. Springer Science + Business Media, Inc., pp. 277–303Google Scholar
  22. 22.
    Kohnke P (2015) Theory reference for the mechanical APDL and mechanical applications. Ansys Inc, releaseGoogle Scholar
  23. 23.
    Shibahara M, Serizawa H, Murakawa H (2000) Finite element method for hot cracking using temperature dependent interface element (Report II) †. Trans. JWRI, vol. 29, no. 1Google Scholar
  24. 24.
    Shibahara M, Serizawa H (2001) Finite element analysis of hot cracking under welding using temperature-dependent interface element. … Offshore and Polar …Google Scholar
  25. 25.
    Schwenk C (2007) FE-Simulation des Schweißverzugs laserstrahlgeschweißter dünner Bleche Sensitivitätsanalyse durch Variation der WerkstoffkennwerteGoogle Scholar

Copyright information

© International Institute of Welding 2016

Authors and Affiliations

  1. 1.BAM-Federal Institute for Material Research and TestingBerlinGermany

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