Journal
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
Volume 26, Issue 6, Pages 710-721Publisher
SPRINGER
DOI: 10.1007/s12613-019-1790-0
Keywords
superduplex stainless steel; friction stir welding; corrosion resistance; cyclic polarization; Mott-Schottky
Categories
Funding
- FACEPE
- CNPq
- UFPE
Ask authors/readers for more resources
The conditions used for friction stir welding of duplex stainless steels determine the resulting mechanical and corrosion performance of the material. This study investigates the corrosion resistance of UNS S32750 and S32760 superduplex stainless steels (SDSSs) joined by friction stir welding, employing cyclic polarization, Mott-Schottky, and microscopy techniques for analysis. The microscopy images indicated the presence of a deleterious intermetallic phase after electrolytic etching of S32760, as well as decreased corrosion resistance. The presence of molybdenum in the steels promoted better passive behavior at low pH. The Mott-Schottky curves revealed p-n heterojunction behavior of the passive oxide. Images acquired after the polarization test by scanning electron microscopy showed higher passivation propensity with increases of temperature and pH.
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