Embrittlement of Ferritic ODS Steel in Pb and Pb-Bi Coolants

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F14%3A00435597" target="_blank" >RIV/68081723:_____/14:00435597 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Embrittlement of Ferritic ODS Steel in Pb and Pb-Bi Coolants

Popis výsledku v původním jazyce

Oxide dispersion strengthened (ODS) steels are strong candidates for use as structural materials in future energy production systems, including generation IV fission reactors, fusion reactors and spallation neutron sources. The aim of this work was to describe microstructural changes in ODS steel (ODM401) caused by long-term high-temperature exposure to liquid Pb and Pb-Bi metals environments. Tensile and impact bend tests were used to observe oxide scale development and microstructural changes. The surface oxide layer of the steel was depleted in Cr and Ti when exposed to liquid Pb and Pb-Bi. The embrittlement of ODS steel following exposure to liquid Pb and Pb-Bi was greater than embrittlement caused by isothermal aging. The degradation of mechanicalproperties of the steel in liquid metals was caused by porosity development, precipitates coarsening and corrosion damage during long-term high-temperature exposure in liquid corrosive media.

Název v anglickém jazyce

Embrittlement of Ferritic ODS Steel in Pb and Pb-Bi Coolants

Popis výsledku anglicky

Oxide dispersion strengthened (ODS) steels are strong candidates for use as structural materials in future energy production systems, including generation IV fission reactors, fusion reactors and spallation neutron sources. The aim of this work was to describe microstructural changes in ODS steel (ODM401) caused by long-term high-temperature exposure to liquid Pb and Pb-Bi metals environments. Tensile and impact bend tests were used to observe oxide scale development and microstructural changes. The surface oxide layer of the steel was depleted in Cr and Ti when exposed to liquid Pb and Pb-Bi. The embrittlement of ODS steel following exposure to liquid Pb and Pb-Bi was greater than embrittlement caused by isothermal aging. The degradation of mechanicalproperties of the steel in liquid metals was caused by porosity development, precipitates coarsening and corrosion damage during long-term high-temperature exposure in liquid corrosive media.

Druh

O - Ostatní výsledky

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GA14-25246S" target="_blank" >GA14-25246S: Pokročilé ODS oceli pro aplikace v prostředí tavenin těžkých kovů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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