Fracture behaviour of the 14Cr ODS steel exposed to helium and liquid lead

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F17%3AN0000038" target="_blank" >RIV/26722445:_____/17:N0000038 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081723:_____/17:00480409 RIV/61389021:_____/17:00480409

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jnucmat.2017.03.049" target="_blank" >http://dx.doi.org/10.1016/j.jnucmat.2017.03.049</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jnucmat.2017.03.049" target="_blank" >10.1016/j.jnucmat.2017.03.049</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Fracture behaviour of the 14Cr ODS steel exposed to helium and liquid lead

Popis výsledku v původním jazyce

This work describes the fracture behaviour of the 14Cr ODS steel produced by mechanical alloying process, after high temperature exposures. Small specimens were exposed to helium gas in a furnace at 720 degrees C for 500 h. Another set of specimens was exposed to flowing liquid lead in the COLONRI II loop at 650 degrees C for 1000 h. All specimens were tested for the impact and tensile behaviour. The impact test results are compared to other sets of specimens in the as received state and after isothermal annealing at 650 degrees C for 1000 h. The impact curves of the exposed materials showed positive shifts on the transition temperature. While the upper shelf value did not change in the Pb exposed ODS steel, it significantly increased in the He exposed one. The differences are discussed in terms of surface and subsurface microscopy observation. The embrittlement can be explained as the effect of a slight change in the grain boundary and size distribution combined with the depletion of sub-surface region from alloying elements forming oxide scale on the surface.

Název v anglickém jazyce

Fracture behaviour of the 14Cr ODS steel exposed to helium and liquid lead

Popis výsledku anglicky

This work describes the fracture behaviour of the 14Cr ODS steel produced by mechanical alloying process, after high temperature exposures. Small specimens were exposed to helium gas in a furnace at 720 degrees C for 500 h. Another set of specimens was exposed to flowing liquid lead in the COLONRI II loop at 650 degrees C for 1000 h. All specimens were tested for the impact and tensile behaviour. The impact test results are compared to other sets of specimens in the as received state and after isothermal annealing at 650 degrees C for 1000 h. The impact curves of the exposed materials showed positive shifts on the transition temperature. While the upper shelf value did not change in the Pb exposed ODS steel, it significantly increased in the He exposed one. The differences are discussed in terms of surface and subsurface microscopy observation. The embrittlement can be explained as the effect of a slight change in the grain boundary and size distribution combined with the depletion of sub-surface region from alloying elements forming oxide scale on the surface.

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

2017

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

490

Číslo periodika v rámci svazku

July

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

143-154

Kód UT WoS článku

000403132300017

EID výsledku v databázi Scopus

2-s2.0-85018463374