Effect of Thermal Ageing on Changes in Modulus of Elasticity E Measured by Ultrasound, Bending Test and EBSD 

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F25%3AN0000041" target="_blank" >RIV/26722445:_____/25:N0000041 - isvavai.cz</a>

Výsledek na webu

<a href="https://journalmt.com/artkey/mft-202503-0008_effect-of-thermal-ageing-on-changes-in-modulus-of-elasticity-e-measured-by-ultrasound-bending-test-and-ebsd.php" target="_blank" >https://journalmt.com/artkey/mft-202503-0008_effect-of-thermal-ageing-on-changes-in-modulus-of-elasticity-e-measured-by-ultrasound-bending-test-and-ebsd.php</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.21062/mft.2025.038" target="_blank" >10.21062/mft.2025.038</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of Thermal Ageing on Changes in Modulus of Elasticity E Measured by Ultrasound, Bending Test and EBSD 

Popis výsledku v původním jazyce

The materials used in VVER nuclear power plants are subject to thermal ageing in operation, among other degradation mechanisms. The aim of the experiment was to verify the effect of thermal ageing on the change of ultrasound velocity on the extracted parts of main circulation piping and pressurizer surge line made of austenitic steels. Two steel conditions were evaluated, as received and thermally aged. The research was carried out on samples made from non-operated pipelines and samples from pipelines after 28 years of operation. The samples were subjected to thermal ageing at 450 degrees C in an atmospheric furnace with a specified exposure time to simulate extended operation of the component for 60 years, where 1 year of operation means 10 months at 100 %-unit power and 2 months in shutdown. The samples were subjected to ultrasonic property measurements and the longitudinal and transverse wave velocities obtained are further used to calculate the Poisson's constant and elastic modulus E of the material. To verify the ultrasonic measurements, the samples were also subjected to mechanical tests to verify the changes in the mechanical properties in terms of elastic behaviour of the selected steels when subjected to a static 3-point flexural test and Electron backscatter diffraction analysis (EBSD).

Název v anglickém jazyce

Effect of Thermal Ageing on Changes in Modulus of Elasticity E Measured by Ultrasound, Bending Test and EBSD 

Popis výsledku anglicky

The materials used in VVER nuclear power plants are subject to thermal ageing in operation, among other degradation mechanisms. The aim of the experiment was to verify the effect of thermal ageing on the change of ultrasound velocity on the extracted parts of main circulation piping and pressurizer surge line made of austenitic steels. Two steel conditions were evaluated, as received and thermally aged. The research was carried out on samples made from non-operated pipelines and samples from pipelines after 28 years of operation. The samples were subjected to thermal ageing at 450 degrees C in an atmospheric furnace with a specified exposure time to simulate extended operation of the component for 60 years, where 1 year of operation means 10 months at 100 %-unit power and 2 months in shutdown. The samples were subjected to ultrasonic property measurements and the longitudinal and transverse wave velocities obtained are further used to calculate the Poisson's constant and elastic modulus E of the material. To verify the ultrasonic measurements, the samples were also subjected to mechanical tests to verify the changes in the mechanical properties in terms of elastic behaviour of the selected steels when subjected to a static 3-point flexural test and Electron backscatter diffraction analysis (EBSD).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Manufacturing Technology

ISSN

1213-2489

e-ISSN

2787-9402

Svazek periodika

25

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

8

Strana od-do

405-412

Kód UT WoS článku

001567642600013

EID výsledku v databázi Scopus

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