Abstract
In the present study laser beam welding of commercially pure titanium is carried out at different welding speeds. Effect of the addition of active flux layer of MgF 2 on the morphology and geometry of the weld zone and surrounding regions is investigated along with its influence on the tensile strength of the welded joints. The active flux narrowed down the weld zone geometry compared to the hour-glass shape obtained in the welding without the flux, accompanied with a decrease of top fusion zone width by around 50%. The tensile strength improved by around 10–12% along with the improvement in the joint ductility with the addition of the active flux.
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