The current paper present a new frictional welding process sin pipes developed at the Physical Metallurgy Laboratory (LAMEF). The present study performed the friction welding of Duplex Stainless Steel UNS 32205 pipes. The Welding parameters displacement rate, loading rate and burn off were varied, followed by Taguchi methodology analysis to verify their influence on mechanical properties. The definition of the optimized parameters were performed by tensile tests. Furthermore, the characterization of the optimum conditions were assessed by, corrosion and Charpy tests. In addition, temperature acquisition, phases proportions and the presence of intermetallic compounds results were analyzed.


The Oil and Gas industry requires efficient and economical transportation of its products. In this context, transport through pipeline is a viable and effective alternative. From Risers' and Pipelines' early days, the technology has continued to evolve in order to meet industrial requirements. One of the challenges during manufacturing of a Rigid Riser is the joining between the pipe segments. Conventional joining processes have limitations due to e.g. the high heat input or tare not fully automatable, so new technologies can rise ot these challenges.

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