Mitigation of the Porosity Formation in the Laser Welding Process of an Aluminium Alloy (Al 1050) through Laser Wobbling

Akash Meena*, Andreas Lassila, Kent Salomonsson, Wei Wang, Chris Valentin Nielsen, Mohamad Bayat

*Corresponding author for this work

Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review

Abstract

Laser welding of two overlapping workpieces poses challenges attributed to the inherent small gap at the weld joint, particularly when one workpiece is 2 mm thick. The occurrence of porosities near the gap and the inability to achieve the required keyhole depth result from inadequate heat transfer between the workpieces, compromising weld joint integrity. A viable solution involves employing the laser wobbling technique to create a molten pool bath, achieving the necessary molten pool depth. To mitigate the formation of porosities requires the optimization of laser parameters, including wobbling frequency, wobbling amplitude, laser power, and laser speed.
Original languageEnglish
Publication date2024
Publication statusPublished - 2024
Event26th International Congress of Theoretical and Applied Mechanics - Daegu, Korea, Republic of
Duration: 25 Aug 202430 Aug 2024

Conference

Conference26th International Congress of Theoretical and Applied Mechanics
Country/TerritoryKorea, Republic of
CityDaegu
Period25/08/202430/08/2024

Keywords

  • Laser keyhole welding
  • Multiphase simulation
  • Double-sheet laser welding
  • Fluid flow
  • Keyhole depth

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