Measurement of local mechanical properties for Cr-coated accident tolerant fuel cladding

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F23%3A00368810" target="_blank" >RIV/68407700:21340/23:00368810 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.jnucmat.2023.154407" target="_blank" >https://doi.org/10.1016/j.jnucmat.2023.154407</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jnucmat.2023.154407" target="_blank" >10.1016/j.jnucmat.2023.154407</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of local mechanical properties for Cr-coated accident tolerant fuel cladding

Popis výsledku v původním jazyce

After the Fukushima accident, there has been motivation to develop accident tolerant fuel (ATF) cladding has been encouraged to meet increased need for safety under accident conditions. Many countries have focused on surface-modified Zr cladding such as Cr or Cr-Al alloy coated Zr-alloy cladding as a near-term application. In the case of coated cladding, there is no currently mechanical properties data measured by a traditional tensile test to describe the characteristics of coated layer directly due to its thin thickness. In this regard, we introduce small scale mechanical test techniques, nanoindentation tests and micro-pillar compression test, to evaluate the mechanical properties for thin coated layer. The results are presented for Cr-coated Optimized ZIRLOTM ATF claddings developed for a high oxidation resistance. From the small-scale tests, the mechanical behaviors including elastic modulus and yield strength were confirmed in both Cr and Zr layers. Their values were equivalent to that of bulk properties measured with conventional testing methods. This implies that the measured mechanical properties by the small-scale tests could represent the bulk properties and could be useful data for reliable fuel performance assessment for coated ATF cladding.

Název v anglickém jazyce

Measurement of local mechanical properties for Cr-coated accident tolerant fuel cladding

Popis výsledku anglicky

After the Fukushima accident, there has been motivation to develop accident tolerant fuel (ATF) cladding has been encouraged to meet increased need for safety under accident conditions. Many countries have focused on surface-modified Zr cladding such as Cr or Cr-Al alloy coated Zr-alloy cladding as a near-term application. In the case of coated cladding, there is no currently mechanical properties data measured by a traditional tensile test to describe the characteristics of coated layer directly due to its thin thickness. In this regard, we introduce small scale mechanical test techniques, nanoindentation tests and micro-pillar compression test, to evaluate the mechanical properties for thin coated layer. The results are presented for Cr-coated Optimized ZIRLOTM ATF claddings developed for a high oxidation resistance. From the small-scale tests, the mechanical behaviors including elastic modulus and yield strength were confirmed in both Cr and Zr layers. Their values were equivalent to that of bulk properties measured with conventional testing methods. This implies that the measured mechanical properties by the small-scale tests could represent the bulk properties and could be useful data for reliable fuel performance assessment for coated ATF cladding.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20305 - Nuclear related engineering; (nuclear physics to be 1.3);

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Journal of Nuclear Materials

ISSN

0022-3115

e-ISSN

1873-4820

Svazek periodika

579

Číslo periodika v rámci svazku

June

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

—

Kód UT WoS článku

000975524500001

EID výsledku v databázi Scopus

2-s2.0-85152593808