Journal
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
Volume 28, Issue 6, Pages 3673-3682Publisher
SPRINGER
DOI: 10.1007/s11665-019-04114-y
Keywords
active screen plasma nitriding; corrosion and wear; expanded austenite; super duplex stainless steel
Categories
Funding
- CNPq Brazilian Funding Agency through the project Low-Temperature Plasma Nitriding of Superduplex Stainless Steel [233074/2014-7]
Ask authors/readers for more resources
Two grades of duplex stainless steel, SAF 2205 and SAF 2507, were nitrided using an active screen plasma process carried out at 380 degrees C for 10h and were characterized in terms of microstructure and hardness. Wear resistance was assessed by means of linear scratch tests, using loads below and above the critical load. Potentiodynamic polarization was used to analyze corrosion behavior in 0.6M NaCl solution. X-ray diffractometry showed expanded austenite formation in all nitrided samples. The super duplex steel SAF 2507 showed much better scratch resistance, with low friction coefficient and greater toughness, as judged by the pattern of superficial cracks when it was tested above the critical load. The corrosion behavior of steels was also different, mainly in the active region, and nitriding had a more beneficial effect upon SAF 2507. The potential relative to the transpassive region was practically unaffected by the nitriding.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available