Autogenous fiber laser welding of 70/30 Cu-Ni alloy plates

Autogenous fiber laser welding of 70/30 Cu-Ni alloy plates

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Cupronickel alloys such as 70/30 Cu-Ni have excellent resistance to sea water corrosion and anti-fouling properties, and thus have been widely used for naval and offshore applications.Traditionally, arc welding and brazing processes have been used to weld such materials.In contrast, laser beam welding is a promising technology due to its high productivity, good process flexibility and reliability, and good welding integrity.In the Mirror Brackets and Accessories (Specific to Truck) present work, a high power fiber laser system is used to weld 5-mm thick 70/30 Cu-Ni alloy plates in a configuration of butt joints.

Then, the laser welded joints are evaluated in terms of microstructures, defects, and mechanical properties (hardness, face and root Food Service:Commercial Kitchen Equipment:Food Preparation Equipment:Prep Tables:Work Tables bend, and tensile) in accordance with the applicable International Organization for Standardization and Defence Standard specifications.Keywords: Laser welding, Cupronickel alloy, Butt joint, Microstructure, Tensile properties, Bend testing.