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Statements

Subject Item
n2:RIV%2F26316919%3A_____%2F10%3A%230000223%21RIV11-MSM-26316919
rdf:type
n11:Vysledek skos:Concept
dcterms:description
In order to assess the material degradation of exposed gas-turbine high-temperature components, the creep degraded CMSX-4 single-crystal nickel-base superalloy of two axial orientations [001] and [111] was investigated. Constant load creep tests were conducted in the stress/temperature ranges of 250 – 780 MPa / 750 – 950°C resulting in rupture time variation from 50 to 4000 hours. A combination of scanning electron microscopy (SEM) and non-destructive small-angle neutron scattering method (SANS) was used to investigate the directional coarsening (rafting) of the γ' precipitates in relation to the stress and temperature applied as well as to the initial crystallographic orientation of the specimens. The SANS results are discussed in terms of the correlation with the raft development, the axial orientation of specimen, the creep parameters and the mechanical properties. In order to assess the material degradation of exposed gas-turbine high-temperature components, the creep degraded CMSX-4 single-crystal nickel-base superalloy of two axial orientations [001] and [111] was investigated. Constant load creep tests were conducted in the stress/temperature ranges of 250 – 780 MPa / 750 – 950°C resulting in rupture time variation from 50 to 4000 hours. A combination of scanning electron microscopy (SEM) and non-destructive small-angle neutron scattering method (SANS) was used to investigate the directional coarsening (rafting) of the γ' precipitates in relation to the stress and temperature applied as well as to the initial crystallographic orientation of the specimens. The SANS results are discussed in terms of the correlation with the raft development, the axial orientation of specimen, the creep parameters and the mechanical properties.
dcterms:title
SANS investigation of γ´ precipitate morphology evolution in creep exposed single crystal nickel base superalloy SANS investigation of γ´ precipitate morphology evolution in creep exposed single crystal nickel base superalloy
skos:prefLabel
SANS investigation of γ´ precipitate morphology evolution in creep exposed single crystal nickel base superalloy SANS investigation of γ´ precipitate morphology evolution in creep exposed single crystal nickel base superalloy
skos:notation
RIV/26316919:_____/10:#0000223!RIV11-MSM-26316919
n3:aktivita
n13:Z
n3:aktivity
Z(MSM2631691901)
n3:cisloPeriodika
January
n3:dodaniDat
n6:2011
n3:domaciTvurceVysledku
n4:1968521
n3:druhVysledku
n16:J
n3:duvernostUdaju
n14:S
n3:entitaPredkladatele
n7:predkladatel
n3:idSjednocenehoVysledku
286352
n3:idVysledku
RIV/26316919:_____/10:#0000223
n3:jazykVysledku
n10:eng
n3:klicovaSlova
Nickel base superalloy, single crystal, creep, structure, neutron diffraction, SANS
n3:klicoveSlovo
n5:SANS n5:neutron%20diffraction n5:single%20crystal n5:Nickel%20base%20superalloy n5:creep n5:structure
n3:kodStatuVydavatele
CH - Švýcarská konfederace
n3:kontrolniKodProRIV
[0C2B535585CE]
n3:nazevZdroje
Materials Science Forum
n3:obor
n12:JG
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
4
n3:rokUplatneniVysledku
n6:2010
n3:svazekPeriodika
636-637
n3:tvurceVysledku
Zrník, Jozef
n3:zamer
n15:MSM2631691901
s:issn
1662-9752
s:numberOfPages
8