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Statements

Subject Item
n2:RIV%2F68081723%3A_____%2F03%3A07033037%21RIV%2F2004%2FAV0%2FA07004%2FN
rdf:type
skos:Concept n15:Vysledek
dcterms:description
Creep in copper dispersion strengthened with fine alumina particles (oxide dispersion strengthened (ODS) Cu) and reinforced with alumina short fibresůůa DRS Cu compositeůůis investigated in two temperature intervals, namely 673ů773 K, lower temperature interval (LTI) and 923ů1023 K, higher temperature interval (HTI). It is shown that in both intervals creep is associated with true threshold stresses decreasing with increasing temperature more strongly than the shear modulus of copper. The true threshold stress in the composite is higher than that in the composite matrix (i.e. ODS copper) by a factor , by which the flow stress in the matrix is reduced due to load transfer. The minimum creep strain rate is found to be dislocation core diffusion controlled in LTI and lattice diffusion controlled in HTI. High values of the apparent activation energies are fully explained in terms of the temperature dependence of the true threshold stress in LTI as well as in HTI. Also the values of the apparent stress exp Creep in copper dispersion strengthened with fine alumina particles (oxide dispersion strengthened (ODS) Cu) and reinforced with alumina short fibresůůa DRS Cu compositeůůis investigated in two temperature intervals, namely 673ů773 K, lower temperature interval (LTI) and 923ů1023 K, higher temperature interval (HTI). It is shown that in both intervals creep is associated with true threshold stresses decreasing with increasing temperature more strongly than the shear modulus of copper. The true threshold stress in the composite is higher than that in the composite matrix (i.e. ODS copper) by a factor , by which the flow stress in the matrix is reduced due to load transfer. The minimum creep strain rate is found to be dislocation core diffusion controlled in LTI and lattice diffusion controlled in HTI. High values of the apparent activation energies are fully explained in terms of the temperature dependence of the true threshold stress in LTI as well as in HTI. Also the values of the apparent stress exp
dcterms:title
Creep in ODS copper reinforced with alumina short fibres - DRS copper. Creep in ODS copper reinforced with alumina short fibres - DRS copper.
skos:prefLabel
Creep in ODS copper reinforced with alumina short fibres - DRS copper. Creep in ODS copper reinforced with alumina short fibres - DRS copper.
skos:notation
RIV/68081723:_____/03:07033037!RIV/2004/AV0/A07004/N
n3:strany
267;276
n3:aktivita
n18:P n18:Z
n3:aktivity
P(IBS2041001), Z(AV0Z2041904)
n3:cisloPeriodika
1-2
n3:dodaniDat
n4:2004
n3:domaciTvurceVysledku
n5:3249514 n5:7680546
n3:druhVysledku
n17:J
n3:duvernostUdaju
n8:S
n3:entitaPredkladatele
n10:predkladatel
n3:idSjednocenehoVysledku
602389
n3:idVysledku
RIV/68081723:_____/03:07033037
n3:jazykVysledku
n12:eng
n3:klicovaSlova
Creep; ODS copper; Load transfer
n3:klicoveSlovo
n9:ODS%20copper n9:Load%20transfer n9:Creep
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[8B5CD4270FED]
n3:nazevZdroje
Material Science and Engineering A. A
n3:obor
n13:JI
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
3
n3:pocetUcastnikuAkce
0
n3:pocetZahranicnichUcastnikuAkce
0
n3:projekt
n16:IBS2041001
n3:rokUplatneniVysledku
n4:2003
n3:svazekPeriodika
355
n3:tvurceVysledku
Kuchařová, Květa Čadek, Josef Zhu, S. J.
n3:zamer
n14:AV0Z2041904
s:issn
0921-5093
s:numberOfPages
10