Microstructural changes in ODS steels during long-term annealing

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F24%3A00378100" target="_blank" >RIV/68407700:21340/24:00378100 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1063/5.0239626" target="_blank" >https://doi.org/10.1063/5.0239626</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0239626" target="_blank" >10.1063/5.0239626</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Microstructural changes in ODS steels during long-term annealing

Popis výsledku v původním jazyce

Oxide dispersion strengthened steels (ODS) are key alloys used in nuclear installations. Steels with chromium content of up to 10 wt. % are suitable for the construction of technological devices in the primary circuit of nuclear power plants. Chromium has anti-corrosive properties due to formation of a passivation layer, which results in lower activation of the material by neutrons. Macroscopic properties are determined by their microstructure, and therefore the description of the microstructure is important. For this purpose, transmission Mössbauer spectroscopy and atom probe tomography were applied. In this way, the physical and/or chemical environments of the resonant atoms can be described. The obtained spectral parameters reach saturation values from which the solubility limit of chromium in iron can be determined. In Cr-rich phase, the solubility limit can be estimated from the spectral parameters of a singlet located in the centre of a Mössbauer spectrum which corresponds to the alloy annealed for the longest time. The suggested procedures are subsequently applied to the case studies of stainless steels suitable for the construction of various components of the III+/IVth generation of nuclear reactors. Presence of trace elements in the investigated samples was determined by neutron activation analysis.

Název v anglickém jazyce

Microstructural changes in ODS steels during long-term annealing

Popis výsledku anglicky

Oxide dispersion strengthened steels (ODS) are key alloys used in nuclear installations. Steels with chromium content of up to 10 wt. % are suitable for the construction of technological devices in the primary circuit of nuclear power plants. Chromium has anti-corrosive properties due to formation of a passivation layer, which results in lower activation of the material by neutrons. Macroscopic properties are determined by their microstructure, and therefore the description of the microstructure is important. For this purpose, transmission Mössbauer spectroscopy and atom probe tomography were applied. In this way, the physical and/or chemical environments of the resonant atoms can be described. The obtained spectral parameters reach saturation values from which the solubility limit of chromium in iron can be determined. In Cr-rich phase, the solubility limit can be estimated from the spectral parameters of a singlet located in the centre of a Mössbauer spectrum which corresponds to the alloy annealed for the longest time. The suggested procedures are subsequently applied to the case studies of stainless steels suitable for the construction of various components of the III+/IVth generation of nuclear reactors. Presence of trace elements in the investigated samples was determined by neutron activation analysis.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

<a href="/cs/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Centrum pokročilých aplikovaných přírodních věd</a><br>

Návaznosti

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

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

Applied Physics of Condensed Matter (APCOM 2024)

ISBN

9780735450608

ISSN

—

e-ISSN

—

Počet stran výsledku

10

Strana od-do

"030008-1"-"030008-9"

Název nakladatele

AIP Publishing, APL, the American Institute of Physics

Místo vydání

Melville, NY

Místo konání akce

Štrbské Pleso

Datum konání akce

19. 6. 2024

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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