Cyclic Softening of Tempered Ferritic-Martensitic Steel P91

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F15%3A%230001110" target="_blank" >RIV/26722445:_____/15:#0001110 - 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

Cyclic Softening of Tempered Ferritic-Martensitic Steel P91

Popis výsledku v původním jazyce

For the ferritic-martensitic steel P91 cyclic softening has been identified as important factor in the assessments of creep-fatigue in nuclear components. Better understanding of the cyclic softening is needed as it is believed to be the main contributorfor the complex material behavior encountered in creep-fatigue testing. In fast reactor components the main life shortening load cycles are from thermal fluctuations causing through-wall stress gradients. The main objective of this work (as a Task in the European project MATISSE) is to perform tailored experiments and to develop models for understanding and predicting the cyclic-softening of P91. The supporting experimental program produces data for calibration and validations of the developed models.An existing elasto-viscoplasticity model simulates the key mechanisms such as decrease in dislocation density, increase in sub-grain size and recovering phenomena. The model will be modified to also incorporate the effect of hold time on

Název v anglickém jazyce

Cyclic Softening of Tempered Ferritic-Martensitic Steel P91

Popis výsledku anglicky

For the ferritic-martensitic steel P91 cyclic softening has been identified as important factor in the assessments of creep-fatigue in nuclear components. Better understanding of the cyclic softening is needed as it is believed to be the main contributorfor the complex material behavior encountered in creep-fatigue testing. In fast reactor components the main life shortening load cycles are from thermal fluctuations causing through-wall stress gradients. The main objective of this work (as a Task in the European project MATISSE) is to perform tailored experiments and to develop models for understanding and predicting the cyclic-softening of P91. The supporting experimental program produces data for calibration and validations of the developed models.An existing elasto-viscoplasticity model simulates the key mechanisms such as decrease in dislocation density, increase in sub-grain size and recovering phenomena. The model will be modified to also incorporate the effect of hold time on

Druh

D - Stať ve sborníku

CEP obor

JF - Jaderná energetika

OECD FORD obor

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Projekt

<a href="/cs/project/ED2.1.00%2F03.0108" target="_blank" >ED2.1.00/03.0108: Udržitelná energetika</a><br>

Návaznosti

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

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

Výpočtová mechanika 2015

ISBN

978-80-261-0568-8

ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

45-46

Název nakladatele

ZČU Plzeň

Místo vydání

Plzeň

Místo konání akce

Špičák, Železná Ruda

Datum konání akce

1. 1. 2015

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

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