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Numerical Simulation Applied to Monitoring Temperature Distribution during the Dual Laser Beam Welding of Duplex Stainless Steel

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Abstract:

This study evaluates the influence of selected welding parameters on temperature distribution during the production of butt welds in DSS 2304 (EN 1.4362) using a dual IPG YLS 5000 fiber laser with a wavelength of 1.06 μm and a maximum output power of 5 kW. Numerical simulations were performed using ANSYS 2022 R2 software to analyze temperature fields in the weld area. The thermophysical properties of DSS were calculated using JMatPro v6.1 software based on its chemical composition. The geometric model was designed considering test samples with a thickness of 5 mm. A progressive finite element mesh was generated, employing 3D SOLID70 elements with a length of 0.1 mm in the welding zone along the weld trajectory. A conical volumetric heat source model was utilized. Third-kind boundary conditions were applied to define the cooling of welded sheets by convection and radiation through argon and ambient air. Numerical simulations were employed to analyze and optimize performance parameters, including laser power, and the power beam ratio of tandem dual beams for welding DSS 2304. The resulting temperature fields were verified using their comparison with the macrostructures of the produced welds. The mechanical properties of the welded joints were tested through tensile testing and microhardness measurements.

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Periodical:

Defect and Diffusion Forum (Volume 445)

Pages:

245-254

DOI:

https://doi.org/10.4028/p-kOvh6r

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Online since:

December 2025

Authors:

Eva Babalová*, Mária Behúlová, Beáta Šimeková, Lucia Kopčanová

Keywords:

Dual-Beam Laser, Duplex Stainless Steel, Laser Welding, Mechanical Properties, Numerical Simulations, Temperature Fields

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© 2025 Trans Tech Publications Ltd. All Rights Reserved

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