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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Pinedo, C. E.
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Topics
Publications (4/4 displayed)
- 2017Development and microstructure characterization of single and duplex nitriding of UNS S31803 duplex stainless steelcitations
- 2014Cavitation erosion resistance of active screen-low temperature plasma nitrided AISI 410 martensitic stainless steel
- 2014Cavitation erosion resistance and wear mechanisms of active screen low temperature plasma nitrided AISI 410 martensitic stainless steelcitations
- 2014Development of duplex high temperature gas nitriding and low temperature plasma nitriding surface treatments for UNS S31803 duplex stainless steel
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document
Development of duplex high temperature gas nitriding and low temperature plasma nitriding surface treatments for UNS S31803 duplex stainless steel
Abstract
<p>Specimens of a UNS S31803 duplex stainless steel were (i) single low temperature plasma nitrided and (ii) high temperature gas nitrided, at 1200°C and low temperature plasma nitrided. Plasma nitriding treatments were carried out at 400°C by 20 h, in a 75%N<sub>2</sub>+25%H<sub>2</sub> atmosphere, duplex surface treatment. The microstructure of the as received material is composed by ferrite and austenitic stringers, aligned in the rolling direction. Light optical microscopy (LOM), scanning electron microscopy (SEM), X-ray diffraction (XRD) and electron-backscattered diffraction (EBSD) were used to characterize the microstructure. The duplex surface treatment led to the formation of 550 μm thick fully austenitic layer at the surface of the specimens, by transformation of ferrite stringers, and the subsequent plasma nitriding led to the formation of a homogeneous expanded austenite layer, 1144 HV. The single plasma nitrided (LTPN) layer was composed by expanded ferrite (αn) and expanded austenite (γn), with microhardness of 1509 HV and 1362 HV, respectively.</p>