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Title:Elucidating nucleation stages of transgranular stress corrosion cracking in austenitic stainless steel by in situ electrochemical and optical methods
Authors:ID Helmuth, Sarmiento Klapper (Author)
ID Zajec, Bojan (Author)
ID Heyn, Andreas (Author)
ID Legat, Andraž (Author)
Files:URL URL - Source URL, visit http://jes.ecsdl.org/content/166/11/C3326.full.pdf+html
 
.pdf PDF - Presentation file, download (2,28 MB)
MD5: A1423C20506CC63A07ADFBD072F9D4F9
 
Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo ZAG - Slovenian National Building and Civil Engineering Institute
Abstract:The pitting and environmentally assisted cracking resistance of austenitic stainless steels (SS) is challenged in several industrial applications particularly those involving hot chloride-concentrated streams. Directional drilling used in the oil and gas exploration is one of these applications. Indeed, high strength CrMn-SS commonly used in drilling technology have a high tendency to fail by stress corrosion cracking (SCC) preceded by localized corrosion once subjected to highly chloride-concentrated drilling fluids at elevated temperatures. A comprehensive understanding regarding the mechanisms governing the transition from pitting into SCCis not currently available, though. Therefore, mechanistic aspects such as the effect of loading conditions on pit nucleation and repassivation as well as the synergistic effect between pit stabilization and the nucleation of a stress corrosion crack are of great practical significance. To investigate this an electrochemical-, optical- and mechanical- monitored SCC test was conducted on a CrMn-SS in an alkaline brine at elevated temperature. The transition from metastable to stable pitting and subsequently to SCC in this system was documented in-situ for the first time. Results supported H.S. Isaacs postulates regarding the interpretation of electrochemical signals and demonstrated that loading conditions affect pit nucleation and repassivation leading to a higher susceptibility of the material to pitting, which preceded SCC.
Keywords:pitting corrosion, stress corrosion cracking, monitoring, elektrochemical noise, austenitic stainless steel
Publication status:Published
Publication version:Version of Record
Publication date:31.05.2019
Publisher:Electrochemical Society
Year of publishing:2019
Number of pages:str. C3326-C3335
Numbering:Vol. 166, iss. 11
PID:20.500.12556/DiRROS-17327 New window
UDC:544.5/.6
ISSN on article:1945-7111
DOI:10.1149/2.0411911jes New window
COBISS.SI-ID:2482535 New window
Copyright:© The Author(s) 2019. Published by ECS.
Note:Nasl. z nasl. zasl.; Opis vira z dne 27. 8. 2019;
Publication date in DiRROS:23.11.2023
Views:794
Downloads:494
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HELMUTH, Sarmiento Klapper, ZAJEC, Bojan, HEYN, Andreas and LEGAT, Andraž, 2019, Elucidating nucleation stages of transgranular stress corrosion cracking in austenitic stainless steel by in situ electrochemical and optical methods. Journal of the electrochemical society [online]. 2019. Vol. 166, no. 11, p. c3326–c3335. [Accessed 16 March 2025]. DOI 10.1149/2.0411911jes. Retrieved from: https://dirros.openscience.si/IzpisGradiva.php?lang=eng&id=17327
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Record is a part of a journal

Title:Journal of the electrochemical society
Publisher:Electrochemical Society
ISSN:1945-7111
COBISS.SI-ID:22698791 New window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

Language:Slovenian
Keywords:jamičasta korozija, napetostno korozijsko pokanje, moniotoring, elektrokemijski šum, avstenitno nerjavno jeklo


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