Mechanical properties of duplex stainless steels laser joints
Keywords:Duplex stainless steel, laser beam welding, Nd, YAG laser, mechanical properties, welding speed.
The welded joints of stainless steels always present problems for the microstructural modifications that occur in the heat affected zone. Particularly, duplex stainless steels present very important changes when the weld pool solidifies forming fundamentally ferritic structures with some austenite in grain boundaries. These microstructural modifications, and those which occur in the HAZ, justify the mechanical properties of the joint and mainly those of plasticity, being all of them influenced by the processing conditions. In this work the influence of the laser welding speed on the tensile behaviour of duplex stainless steel welded joints is presented. The microstructure of the obtained seams and of the heat affected zone will be evaluated by means of optic and scanning electron microscopy. Also, different microhardness profiles have been obtained to evaluate the modifications in the mechanical properties both in the seam and the zone of thermal affection.
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How to Cite
Amigó, V., Bonache, V., Teruel, L., & Vicente, A. (2005). Mechanical properties of duplex stainless steels laser joints. Revista De Metalurgia, 41(2), 90–97. https://doi.org/10.3989/revmetalm.2005.v41.i2.191
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