The effect of surface modification on the corrosion protection ability of the passive films of sensitized UNS S31803 duplex stainless steel

2018 ◽  
Vol 54 (2) ◽  
pp. 174-183 ◽  
Author(s):  
Khashayar Morshed-Behbahani ◽  
Pooria Najafisayar ◽  
Mahmoud Pakshir ◽  
Nika Zakerin
Keyword(s):  
Stainless Steel ◽  
Surface Modification ◽  
Duplex Stainless Steel ◽  
Corrosion Protection ◽  
Passive Films ◽  
Effect Of Surface

Surface Roughness and Initial Pressure Effect on Superplastically Carburized Duplex Stainless Steel

2010 ◽  
Vol 297-301 ◽  
pp. 227-232 ◽  
Author(s):  
Sharidah Azuar Abdul Azis ◽  
Iswadi Jauhari ◽  
Nik Rozlin Nik Masdek ◽  
Nor Wahida Ahamad ◽  
Hiroyuki Ogiyama
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Surface Hardness ◽  
Direct Interaction ◽  
Initial Pressure ◽  
Pressure Effects ◽  
Superplastic Material ◽  
Coarse Microstructure ◽  
Effect Of Surface

Superplastic carburizing (SPC) is a carburizing process that combines carburizing with superplastic deformation. Since SPC involves direct interaction between the superplastically deformed surface and the solid carbon medium, the effect of surface roughness on the process cannot be disregarded. This paper presents the study of surface roughness and initial pressure effects on superplastic carburizing of duplex stainless steel (DSS). SPC was conducted under four different surface roughness (Ra) conditions of 0.9, 0.3, 0.1 and 0.03 μm. The microstructure, surface hardness, and carburized layer thickness were studied. Comparisons were also done on non-superplastic material which has a coarse microstructure. The results showed that the surface roughness strongly affected the properties of the superplastically carburized duplex stainless steel while its effects on the non-superplastic material were not that obvious.

Resistance to Localized Corrosion of Passive Films on a Duplex Stainless Steel

CORROSION ◽  
2001 ◽  
Vol 57 (4) ◽  
pp. 300-306 ◽  
Author(s):  
R. M. Souto ◽  
I. C. Mirza Rosca ◽  
S. González
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Passive Films ◽  
Localized Corrosion
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