Naslov
Determination of Critical Temperature for Pitting Corrosion Occurrence at Welded 2205 Duplex - Duplex Steel

Autori
Ljumović, Petar ; Jakovac, Marko ; Ugrina Teo ; Dadić Zvonimir

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of International conference "Mechanical Technologies and Structural Materials" / Jozić, Sonja ; Lela, Branimir ; Gjeldum, Nikola - Split : Hrvatsko društvo za zaštitu materijala (HDZaMa), 2022, 103-109

Skup
11th International Conference Mechanical Technologies and Structural Materials (MTSM 2022)

Mjesto i datum
Split, Hrvatska, 22.09.2022. - 23.09.2022

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Stainless steel, Duplex, Pitting Corrosion, Welding, Seawater

Sažetak
The aim of this paper was determination of the critical temperature at which pitting corrosion occurs in welded 2205 duplex-duplex steel. Its chemical composition and properties are given. Pitting corrosion and the conditions of its occurrence as well as the measures for protection against it have been specially treated. Also, duplex steel welding preparation procedures are described. The welding process of the specimen as well as its properties after welding is given as well. The microstructure of the specimen and its austenite-ferrite ratios were obtained and analysed. Susceptibility to pitting corrosion was tested in simulated seawater atmosphere. Pitting corrosion resistance tests through conducted surface roughness analysis were performed and discussed for each set of parameters, which included time and temperature. The results showed that temperature elevation has a significant influence on pitting corrosion occurrence. Measured critical temperature value for pitting corrosion occurrence at welded 2205 duplex-duplex steel in simulated seawater conditions was 40 °C.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo, Interdisciplinarne tehničke znanosti

POVEZANOST RADA