Characterization of austenitic stainless steels with regard to environmentally assisted fatigue in simulated light water reactor conditions
Publiceringsår
2021
Upphovspersoner
Bruchhausen, Matthias; Dundulis, Gintautas; McLennan, Alec; Arrieta, Sergio; Austin, Tim; Cicero, Romá N.; Chitty, Walter John; Doremus, Luc; Ernestova, Miroslava; Grybenas, Albertas; Huotilainen, Caitlin; Mann, Jonathan; Mottershead, Kevin; Novotny, Radek; Perosanz, Francisco Javier; Platts, Norman; Roux, Jean Christophe Le; Spätig, Philippe; Celeizábal, Claudia Torre; Twite, Marius; Vankeerberghen, Marc
Visa merAbstrakt
A substantial amount of research effort has been applied to the field of environmentally assisted fatigue (EAF) due to the requirement to account for the EAF behaviour of metals for existing and new build nuclear power plants. We present the results of the European project INcreasing Safety in NPPs by Covering Gaps in Environmental Fatigue Assessment (INCEFA-PLUS), during which the sensitivities of strain range, environment, surface roughness, mean strain and hold times, as well as their interactions on the fatigue life of austenitic steels has been characterized. The project included a test campaign, during which more than 250 fatigue tests were performed. The tests did not reveal a significant effect of mean strain or hold time on fatigue life. An empirical model describing the fatigue life as a function of strain rate, environment and surface roughness is developed. There is evidence for statistically significant interaction effects between surface roughness and the environment, as well as between surface roughness and strain range. However, their impact on fatigue life is so small that they are not practically relevant and can in most cases be neglected. Reducing the environmental impact on fatigue life by modifying the temperature or strain rate leads to an increase of the fatigue life in agreement with predictions based on NUREG/CR-6909. A limited sub-programme on the sensitivity of hold times at elevated temperature at zero force conditions and at elevated temperature did not show the beneficial effect on fatigue life found in another study.
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Publikationstyp
Publikationsform
Artikel
Moderpublikationens typ
Tidning
Artikelstyp
En originalartikel
Målgrupp
VetenskapligKollegialt utvärderad
Kollegialt utvärderadUKM:s publikationstyp
A1 Originalartikel i en vetenskaplig tidskriftPublikationskanalens uppgifter
Öppen tillgång
Öppen tillgänglighet i förläggarens tjänst
Ja
Öppen tillgång till publikationskanalen
Helt öppen publikationskanal
Licens för förläggarens version
CC BY
Parallellsparad
Nej
Övriga uppgifter
Vetenskapsområden
Maskin- och produktionsteknik; Materialteknik
Nyckelord
[object Object],[object Object],[object Object],[object Object],[object Object]
Språk
engelska
Internationell sampublikation
Ja
Sampublikation med ett företag
Ja
DOI
10.3390/met11020307
Publikationen ingår i undervisnings- och kulturministeriets datainsamling
Ja