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Title: Yb-Fibre laser welding of 6 mm duplex stainless steel 2205
Other Titles: 9th International Conference on Photonic Technologies - LANE 2016
Authors: Bolut, M
Kong, C
Blackburn, J
Cashell, KA
Hobson, PH
Keywords: Fibre laser welding;duplex stainless steel;grade 2205
Issue Date: 2017
Abstract: Duplex stainless steel (DSS) is one of the materials of choice for structural and nuclear applications, having high strength and good corrosion resistance when compared with other grades of stainless steel. The welding process used to join these materials is critical as transformation of the microstructure during welding directly affects the material properties. High power laser welding has recently seen an increase in research interest as it offers both speed and flexibility. This paper presents an investigation into the important parameters affecting laser welding of DSS grade 2205, with particular focus given to the critical issue of phase transformation during welding. Bead-on-plate melt-run trials without filler material were performed on 6 mm thick plates using a 5 kW Yb-fibre laser. The laser beam was characterized and a Design of Experiment approach was used to quantify the impact of the process parameters. Optical metallographic methods were used to examine the resulting microstructures.
Appears in Collections:Dept of Mechanical Aerospace and Civil Engineering Research Papers

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