Pore formation and its mitigation during hybrid laser/arc welding

What is it about?

Possible mechanisms of the pores formation and their mitigation during the hybrid laser/arc welding (HLAW) of Advanced High Strength Steel (AHSS) were investigated. Influence of three variables (stand-off distance between the laser and the arc of gas metal arc welding (GMAW), heat input, and side shielding gas) in the HLAW for reducing the presence of pores in the weld area was studied.

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Why is it important?

The optimum condition of the welds prepared by the HLAW was compared with the welds made by the laser welding assisted with hot wire.