Stress corrosion crack initiation testing with tapered specimens in high-temperature water–results of a collaborative research project

Rik Wouter Bosch (Corresponding Author), Stefan Ritter, Matthias Herbst, Renate Kilian, M. Grace Burke, Jonathan Duff, Fabio Scenini, Yuchen Gu, Alice Dinu, Ulla Ehrnstén, Aki Toivonen, Radek Novotny, Oliver Martin, Francisco Javier Perosanz, Andraž Legat, Bojan Zajec

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The applicability of an accelerated test technique using tapered tensile specimens for investigating the stress corrosion crack (SCC) initiation behaviour of structural materials in high-temperature water was assessed in the framework of a European collaborative research project (MICRIN–MItigation of CRack INitiation). The main advantage of using a tapered geometry is, that in a single test a stress gradient is obtained through the gauge length, and therefore a stress threshold for SCC initiation can be determined in a reasonable timeframe. This method was used to investigate two different materials that were known to be susceptible to SCC in light water reactor environment: a high-Si stainless steel and a Ni-base weld metal (Alloy 182). The results of the international test programme confirmed that the tapered specimen test methodology could be used to identify a SCC initiation stress threshold, albeit that significant scatter was present in the data.

Original languageEnglish
Number of pages16
JournalCorrosion Engineering Science and Technology
DOIs
Publication statusE-pub ahead of print - 8 Sep 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • Alloy 182
  • crack initiation
  • high-temperature water
  • light water reactors
  • stainless steel
  • Stress corrosion cracking
  • tapered specimens

Fingerprint Dive into the research topics of 'Stress corrosion crack initiation testing with tapered specimens in high-temperature water–results of a collaborative research project'. Together they form a unique fingerprint.

  • Cite this

    Bosch, R. W., Ritter, S., Herbst, M., Kilian, R., Burke, M. G., Duff, J., Scenini, F., Gu, Y., Dinu, A., Ehrnstén, U., Toivonen, A., Novotny, R., Martin, O., Perosanz, F. J., Legat, A., & Zajec, B. (2020). Stress corrosion crack initiation testing with tapered specimens in high-temperature water–results of a collaborative research project. Corrosion Engineering Science and Technology. https://doi.org/10.1080/1478422X.2020.1815460