Study of crack initiation in ferritic martensitic steel T91 in PbBi

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F16%3AN0000108" target="_blank" >RIV/26722445:_____/16:N0000108 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/26722445:_____/16:N0000109

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Study of crack initiation in ferritic martensitic steel T91 in PbBi

Popis výsledku v původním jazyce

The ferritic martensitic steel T91 is being considered as one of the candidate materials for internal structural components of future Heavy Liquid Metal reactors. The position of T91 on the list of the candidate materials is now being questioned due to the evidence of its sensitivity to liquid metal embrittlement (LME) mainly in PbBi eutectic and, in specific conditions, also in Pb. The main goal of this work is to provide a detailed characterisation of the crack initiation phenomena in Liquid Metals. Slow Strain Tensile Tests of tapered specimens were used for threshold stress determination of crack initiation. The taper creates a variation of stress along the gauge length which allows the identification of the threshold stress for the crack appearance. Tests were carried out in the CALLISTO cell, in air and in PbBi at 300°C with a reduced oxygen content (about 10-7 wt%). Post-tests examinations were carried out in the SEM to highlight the morphology of cracks. A preliminary evaluation of crack initiation threshold stresses is presented.

Název v anglickém jazyce

Study of crack initiation in ferritic martensitic steel T91 in PbBi

Popis výsledku anglicky

The ferritic martensitic steel T91 is being considered as one of the candidate materials for internal structural components of future Heavy Liquid Metal reactors. The position of T91 on the list of the candidate materials is now being questioned due to the evidence of its sensitivity to liquid metal embrittlement (LME) mainly in PbBi eutectic and, in specific conditions, also in Pb. The main goal of this work is to provide a detailed characterisation of the crack initiation phenomena in Liquid Metals. Slow Strain Tensile Tests of tapered specimens were used for threshold stress determination of crack initiation. The taper creates a variation of stress along the gauge length which allows the identification of the threshold stress for the crack appearance. Tests were carried out in the CALLISTO cell, in air and in PbBi at 300°C with a reduced oxygen content (about 10-7 wt%). Post-tests examinations were carried out in the SEM to highlight the morphology of cracks. A preliminary evaluation of crack initiation threshold stresses is presented.

Druh

D - Stať ve sborníku

CEP obor

JF - Jaderná energetika

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)

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

Utilization of SUSEN Technologies for the Gen IV Development

ISBN

978-80-270-0925-1

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

82-87

Název nakladatele

Centrum výzkumu Řež, s.r.o.

Místo vydání

Řež

Místo konání akce

Řež

Datum konání akce

24. 11. 2016

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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