Fracture toughness evaluation of supermartensitic stainless steel submitted to cathodic protection in seawater environment
DOI:
https://doi.org/10.4013/5536Abstract
Supermartensitic stainless steels (SSS) have been applied in oil and gas industries for flowline material as an alternative for both duplex stainless steels and carbon steels with inhibitor. SSS show greater toughness, corrosion resistance and weldability properties when compared to conventional martensitic stainless steels. However, when protected cathodically in seawater environment they can be susceptible to hydrogen embrittlement due to hydrogen charging. The present study evaluates the fracture toughness of SSS submitted to cathodic protection in seawater environment at a potential of steel “over-protection”. Incrementally step loading technique was used in the SSS fracture toughness evaluation. The results show a significant drop in the fracture toughness of steel in the studied environment.
Key words: supermartensitic stainless steel, cathodic protection, fracture toughness.
Downloads
Published
Issue
Section
License
I grant the journal Estudos Tecnológicos the first publication of my article, licensed under Creative Commons Attribution license (which allows sharing of work, recognition of authorship and initial publication in this journal).
I confirm that my article is not being submitted to another publication and has not been published in its entirely on another journal. I take full responsibility for its originality and I will also claim responsibility for charges from claims by third parties concerning the authorship of the article.
I also agree that the manuscript will be submitted according to the journal’s publication rules described above.
