Abstract
Continuous-wave Nd:YAG laser welding of H62 brass and 316L stainless steel was studied using welded joints made with different overlap configurations. Optical and scanning electron microscopies, energy-dispersive X-ray spectroscopy, and microhardness testing were used to analyze the microstructures and mechanical properties of the joints. The welded joints with the brass-on-steel overlap configuration exhibited better performance. Elemental diffusion and dissolution—in particular, the evaporation of zinc—were observed in the welded joints. Intermetallic compounds were absent in the joints because brass and stainless steel exhibit unlimited solid solubility. Finally, the microhardness of the joints was higher than that of the brass.
Notes
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