High-temperature long-service embrittlement of the R.A.F.M. EUROFER´97 steel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F09%3A00332730" target="_blank" >RIV/68081723:_____/09:00332730 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26210/09:PU87800

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

High-temperature long-service embrittlement of the R.A.F.M. EUROFER´97 steel

Popis výsledku v původním jazyce

The ferritic-martensitic reduced activation steel Eurofer´97 is candidate structural material for in-vessel components of proposed fusion reactors. The embrittlement of the high-chromium ferritic-martensitic steels implies important limitation for use ofthese materials. The microstructure and fracture properties of the Eurofer´97 steel sheets of thickness 25 mm were investigated in as-received state and in state after long-time thermal ageing (550 °C/5.000 h/air). Detailed microstructure studies were carried out by means of optical, electron and quantitative electron microscopy in as-received state and in state after long-time thermal ageing. Mechanical properties were evaluated in both states by means of Charpy impact testing. The microstructure of the Eurofer´97 consisted of tempered martensite with M23C6 and MX precipitates. The isothermal ageing caused evident shift in tDBTT about +5 °C, no proofs of embrittlement were observed on fracture surfaces.

Název v anglickém jazyce

High-temperature long-service embrittlement of the R.A.F.M. EUROFER´97 steel

Popis výsledku anglicky

The ferritic-martensitic reduced activation steel Eurofer´97 is candidate structural material for in-vessel components of proposed fusion reactors. The embrittlement of the high-chromium ferritic-martensitic steels implies important limitation for use ofthese materials. The microstructure and fracture properties of the Eurofer´97 steel sheets of thickness 25 mm were investigated in as-received state and in state after long-time thermal ageing (550 °C/5.000 h/air). Detailed microstructure studies were carried out by means of optical, electron and quantitative electron microscopy in as-received state and in state after long-time thermal ageing. Mechanical properties were evaluated in both states by means of Charpy impact testing. The microstructure of the Eurofer´97 consisted of tempered martensite with M23C6 and MX precipitates. The isothermal ageing caused evident shift in tDBTT about +5 °C, no proofs of embrittlement were observed on fracture surfaces.

Druh

O - Ostatní výsledky

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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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)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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