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

Rik-Wouter Bosch, 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

Corrosion Engineering, Science and Technology, Volume: 56, Issue: 2, Pages: 103 - 118

Swansea University Author: Yuchen Gu

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DOI (Published version): 10.1080/1478422x.2020.1815460

Abstract

The applicability of an accelerated test technique using tapered tensile specimens for investigating thestress corrosion crack (SCC) initiation behaviour of structural materials in high-temperature water wasassessed in the framework of a European collaborative research project (MICRIN – MItigation o...

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Published in: Corrosion Engineering, Science and Technology
ISSN: 1478-422X 1743-2782
Published: Informa UK Limited 2021
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa57703
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Abstract: The applicability of an accelerated test technique using tapered tensile specimens for investigating thestress corrosion crack (SCC) initiation behaviour of structural materials in high-temperature water wasassessed in the framework of a European collaborative research project (MICRIN – MItigation of CRackINitiation). The main advantage of using a tapered geometry is, that in a single test a stress gradient isobtained through the gauge length, and therefore a stress threshold for SCC initiation can bedetermined in a reasonable timeframe. This method was used to investigate two different materialsthat were known to be susceptible to SCC in light water reactor environment: a high-Si stainlesssteel and a Ni-base weld metal (Alloy 182). The results of the international test programmeconfirmed 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.
College: Faculty of Science and Engineering
Funders: EPSRC
Issue: 2
Start Page: 103
End Page: 118

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