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| Naji, M. |
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| Motta, Antonella |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Casati, R. |
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| Kočí, Jan | Prague |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Ali, M. A. |
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| Rančić, M. |
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| Azevedo, Nuno Monteiro |
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Vicente, André
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Topics
Publications (8/8 displayed)
- 2022Basic Concepts of Steels
- 2022Effect of laser cladding parameters in NbC reinforced 316L austenitic stainless steel composite depositions on a mild steel
- 2022Duplex Stainless Steels
- 2022The benefits of MCAW when compared to GMAW
- 2021WELDING METALLURGY OF DUPLEX STAINLESS STEELS
- 2020DUPLEX STAINLESS STEELS
- 2015Effects of different inoculants on the microstructural characteristics of gray cast iron gg-25, hardness and useful life of tools
- 2004Modificación de las propiedades superficiales de aceros inoxidables Dúplex mediante recubrimientos por láser
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document
Duplex Stainless Steels
Abstract
Duplex stainless steels (DSS) are steels that present biphasic microstructure containing ferrite and austenite in volumetric fractions approximately equal to 50%. Due to their biphasic microstructure, these steels present a favorable combination of the properties of ferritic and austenitic stainless steels. They present high mechanical strength, good toughness and ductility, and good corrosion resistance in various media. This favorable combination of properties makes this class of stainless steels widely used in the petrochemical, pulp and paper, and, more recently, hydro generation industries. The ideal volumetric fraction of these phases in duplex stainless steels is 50% ferrite and 50% austenite, however, this condition is difficult to be obtained when arc welding these materials. In order to obtain joints with biphasic microstructure and volumetric fractions of the δ ferrite and austenite phases close to 50%, the cooling rate of the welded joint must be projected through a detailed study of the joint and the physical properties of the base metal.