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Zita Iždinská; František Kolenič (2009)
Publisher: Univerzity of Zilina. Faculty of Mechanical Engineering
Journal: Materiálové Inžinierstvo
Languages: English
Types: Article
Subjects: Duplex stainless steel, Electron beam welding ferrite, Austenite, Postweld heat treatment, Materials of engineering and construction. Mechanics of materials, TA401-492
The duplex stainless steel is two-phase steel with the structure composed of austenite and ferrite with optimum austenite/ferrite proportion 50%. At present, classical arc processes for welding duplex steels are generally regarded as acceptable. On the other hand electron and laser beam welding is up to now considered less suitable for welding duplex steels. The submitted work presents the results of testing various thermal conditions at welding duplex stainless steel with electron beam. It was shown, that application of suitable postheat made possible to reduce the ferrite content in weld metal.
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