The master's thesis addresses the challenge of Wire Arc Additive Manufacturing (WAAM) of duplex stainless steel 2205, which is used in the production of large and complex metal structures. The central theme of the thesis is the optimization of process parameters, such as energy input and wire feed speed, to achieve the highest possible material utilization and to reduce surface waviness and residual stresses on the welded walls. To tackle these challenges, experimental tests were conducted with various heat input parameters. Measurements of wall waviness and residual stresses were performed using microscopic analyses and diffraction methods. The results indicate that increasing the energy input leads to greater wall waviness, which negatively affects mechanical stability and material utilization. The best results were achieved at medium heat input levels, where residual stresses and waviness remained within acceptable limits.
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