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On flux effects in a low alloy steel from a Swedish reactor pressure vessel
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).ORCID iD: 0000-0003-1498-5691
2017 (English)In: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 484, 110-119 p.Article in journal (Refereed) Published
Abstract [en]

This study aims to investigate the presence of Unstable Matrix Defects in irradiated pressure vessel steel from weldments of the Swedish PWR Ringhals 4 (R4). Hardness tests have been performed on low flux (surveillance material) and high flux (Halden reactor) irradiated material samples in combination with heat treatments at temperatures of 330, 360 and 390 °C in order to reveal eventual recovery of any hardening features induced by irradiation. The experiments carried out in this study could not reveal any hardness recovery related to Unstable Matrix Defects at relevant temperatures. However, a difference in hardness recovery was found between the low and the high flux samples at heat treatments at higher temperatures than expected for the annihilation of Unstable Matrix Defects–the observed recovery is here attributed to differences of the solute clusters formed by the high and low flux irradiations.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 484, 110-119 p.
Keyword [en]
Defects, Hardness, Heat treatment, High strength steel, Irradiation, Pressure vessels, Pressurized water reactors, Recovery, High flux, Irradiated materials, Low flux, Matrix defects, Pressure vessel steels, Reactor Pressure Vessel, Solute cluster, Weldments, Alloy steel
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-201957DOI: 10.1016/j.jnucmat.2016.11.026ISI: 000393246300014Scopus ID: 2-s2.0-85002170882OAI: oai:DiVA.org:kth-201957DiVA: diva2:1078417
Note

QC 20170303

Available from: 2017-03-03 Created: 2017-03-03 Last updated: 2017-11-29Bibliographically approved

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Boåsen, MagnusEfsing, Pål

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CiteExportLink to record
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Citation style
  • apa
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  • ieee
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  • vancouver
  • Other style
More styles
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  • de-DE
  • en-GB
  • en-US
  • fi-FI
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  • nn-NB
  • sv-SE
  • Other locale
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Output format
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