Collection of Replicas to Evaluate the Structural Condition of Steel after Thermal Ageing

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F24%3AN0000139" target="_blank" >RIV/26722445:_____/24:N0000139 - isvavai.cz</a>
Result on the web
<a href="https://metalografie.vzup.cz/doc/sbornik-Metalografie2024.pdf" target="_blank" >https://metalografie.vzup.cz/doc/sbornik-Metalografie2024.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Collection of Replicas to Evaluate the Structural Condition of Steel after Thermal Ageing
Original language description
This article aims to introduce the method of replica sampling and its application in the structural monitoring of steels used in VVER 440 and VVER 1000 type NPPs. For the experiment, samples were created by extracting a part of the primary circulation pipe made of austenitic steel 08Ch18N12T. In total, four conditions were evaluated, namely the initial condition (the part of the pipeline that was not in use), a sample taken after 28 years of operation at the Jaslovské Bohunice V1 NPP, and samples of these conditions after their thermal aging at 450 °C in an atmospheric furnace. The exposure time was set to simulate the extended operation of the component for 60 years (Note: 1 year of operation means 10 months of 100% of power, 2 months in outage). The purpose of the analyses performed was to assess the structural condition of the samples in terms of changes of grain sizes, and the representation of structural phases. A subtask was then used to assess the ability of the replication materials and films to convey this information about the microstructure of the material. Documentation of the microstructure and verification of replicas were carried out by light and scanning electron microscopy.
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
16th Conference “Contribution of Metallography to Production Problem Solutions” Mariánské Lázně, 3rd -5 th September 2024
ISBN
978-80-01-07331-5
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
117-122
Publisher name
ČVUT
Place of publication
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Event location
Mariánské Lázně
Event date
Sep 3, 2024
Type of event by nationality
CST - Celostátní akce
UT code for WoS article
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