Integrated modeling of cracking during deep penetration laser welding of nickel alloys

During deep penetration laser welding of nickel alloys, interactions between composition and processing conditions can lead to the formation of defects. Inconel 740H, for example, has demonstrated a susceptibility to horizontal fusion zone cracking at locations between 70% and 80% of the weld depth during laser welding at powers above 5 kW. Coupling three-dimensional heat transfer, fluid flow, and stress modeling tools allowed that both the strain rate and stress normal to the solidification direction to be calculated. In the Inconel 740H welds, cracks formed at locations where the strain rate and stress simultaneously reached critical levels. No cracking was observed in the Inconel 690 welds, since the strain rate and stress did not simultaneously reach these critical levels.

This is an Accepted Manuscript of an article published by Taylor & Francis in Science and Technology of Welding and Joining on 2023-05-08, available online: https://www.tandfonline.com/10.1080/13621718.2023.2207950.

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Work Title Integrated modeling of cracking during deep penetration laser welding of nickel alloys
Access
Open Access
Creators
  1. M. Z. Gao
  2. B. Mondal
  3. T. A. Palmer
  4. W. Zhang
  5. T. DebRoy
Keyword
  1. Solidification cracking
  2. Deep penetration
  3. Keyhole mode laser welding
  4. Nickel alloys
  5. Heat transfer and fluid flow
  6. Finite element model
  7. Strain rate
  8. Tensile stress
License CC BY-NC 4.0 (Attribution-NonCommercial)
Work Type Article
Publisher
  1. Science and Technology of Welding and Joining
Publication Date February 21, 2024
Publisher Identifier (DOI)
  1. https://doi.org/10.1080/13621718.2023.2207950
Deposited February 29, 2024

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Version 1
published

  • Created
  • Added Integrated_Modeling_of_Cracking_during_Deep_Penetration_Laser_Welding_of_Nickel_Alloys.pdf
  • Added Creator M. Z. Gao
  • Added Creator B. Mondal
  • Added Creator T. A. Palmer
  • Added Creator W. Zhang
  • Added Creator T. DebRoy
  • Published
  • Updated Keyword, Publication Date Show Changes
    Keyword
    • Solidification cracking, Deep penetration, Keyhole mode laser welding, Nickel alloys, Heat transfer and fluid flow, Finite element model, Strain rate, Tensile stress
    Publication Date
    • 2023-01-01
    • 2024-02-21
  • Updated