Abstract
When duplex stainless steels are heated, they can become sensitised and intermetallic phases can appear. In this work, samples of duplex stainless steel, UNS 1.4462, have been heated (850. °C for 1 and 2. h) in a heating unit that can be accommodated to a confocal microscope in order to study the morphological changes in-situ. The electrochemical behaviour of the samples has been analysed by means of conventional and localised electrochemical techniques. According to the results, there is a general decrease in the steel resistance to localised corrosion; this decrease can be related to defects in the formed passive film.
Original language | English |
---|---|
Pages (from-to) | 327-341 |
Number of pages | 15 |
Journal | Corrosion Science |
Volume | 94 |
DOIs | |
Publication status | Published - 1 May 2015 |
Keywords
- A. Stainless steel
- B. EIS
- B. Polarisation
- C. Pitting corrosion
- C. Segregation