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Statements

Subject Item
n2:RIV%2F61389005%3A_____%2F03%3A00105647%21RIV%2F2005%2FGA0%2FA49005%2FN
rdf:type
skos:Concept n11:Vysledek
dcterms:description
The gas reactor turbine blades produced from the Inconel 738 nickel-base superalloy were studied with the aim to assess the influence of high-temperature operation fatigue on the microstructure. High-resolution small-angle neutron scattering (SANS) provides an unique possibility of non-destructive characterization of precipitates in the blades. Two turbine blades in as-cast state and after operation were compared at different positions along their edge, where different thermal and stress loads are expected. Size distributions and relative volume fractions of gamma´-precipitates were evaluated from measured SANS spectra for each blade and individual position. It was found that the precipitate volume fraction increases towards the tip of both blades. The blade after operation exhibits a significant increase of the average size and volume of precipitates with respect to the as-cast blade, which can be explained by expected stronger precipitate coarsening under higher stresses. The prec... Turbinové lopatky plynového reaktoruvyrobené ze super slitiny Inconel 738 na niklové bázi jsou studovány s cílem zjistit vliv únavy prací při vysoké teplotě na mikrostrukturu. The gas reactor turbine blades produced from the Inconel 738 nickel-base superalloy were studied with the aim to assess the influence of high-temperature operation fatigue on the microstructure. High-resolution small-angle neutron scattering (SANS) provides an unique possibility of non-destructive characterization of precipitates in the blades. Two turbine blades in as-cast state and after operation were compared at different positions along their edge, where different thermal and stress loads are expected. Size distributions and relative volume fractions of gamma´-precipitates were evaluated from measured SANS spectra for each blade and individual position. It was found that the precipitate volume fraction increases towards the tip of both blades. The blade after operation exhibits a significant increase of the average size and volume of precipitates with respect to the as-cast blade, which can be explained by expected stronger precipitate coarsening under higher stresses. The prec...
dcterms:title
Non-destructive sans investigation of in 738 turbine blades after high-temperature operation Nedestruktivní SANS vyšetřování 738 turbinových lopatek po práci při vysoké teplotě Non-destructive sans investigation of in 738 turbine blades after high-temperature operation
skos:prefLabel
Non-destructive sans investigation of in 738 turbine blades after high-temperature operation Nedestruktivní SANS vyšetřování 738 turbinových lopatek po práci při vysoké teplotě Non-destructive sans investigation of in 738 turbine blades after high-temperature operation
skos:notation
RIV/61389005:_____/03:00105647!RIV/2005/GA0/A49005/N
n4:aktivita
n10:P
n4:aktivity
P(GA202/03/0891), P(KSK1010104)
n4:dodaniDat
n7:2005
n4:domaciTvurceVysledku
n6:1610252 n6:5972914 n6:6994172 n6:4302885 n6:2458985
n4:druhVysledku
n13:B
n4:duvernostUdaju
n5:S
n4:entitaPredkladatele
n17:predkladatel
n4:idSjednocenehoVysledku
618098
n4:idVysledku
RIV/61389005:_____/03:00105647
n4:jazykVysledku
n12:eng
n4:klicovaSlova
superalloy;SANS
n4:klicoveSlovo
n8:SANS n8:superalloy
n4:kontrolniKodProRIV
[641ADEE94040]
n4:mistoVydani
Geneva
n4:nazevEdiceCisloSvazku
Neuveden
n4:nazevZdroje
Non-destructive sans investigation of in 738 turbine blades after high-temperature operation
n4:obor
n18:BM
n4:pocetDomacichTvurcuVysledku
5
n4:pocetStranKnihy
6
n4:pocetTvurcuVysledku
8
n4:projekt
n15:GA202%2F03%2F0891 n15:KSK1010104
n4:rokUplatneniVysledku
n7:2003
n4:tvurceVysledku
Rogante, M. Lukáš, Petr Marinčák, Vojtěch Ryukhtin, Vasyl Cassi, L. Šaroun, Jan Ceschini, G. F. Strunz, Pavel
s:numberOfPages
6
n14:hasPublisher
Neuveden