A novel approach in the field of narrow gap laser welding produces superior weld joint quality, especially the configuration of weld toe, which has a positive effect on fatigue life.

Advanced instrumentation combined with effective test procedures gives manufacturers an edge in measuring and analyzing welds.

This article describes how shielding gas composition, either argon or nitrogen, affects the hardness, tensile strength, and toughness of high-power, high-brightness laser welds made on various base materials, including A508 forging steel, 316L stainless steel, Inconel 690, and solution-annealed IN718.