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Statements

Subject Item
n2:RIV%2F68081723%3A_____%2F14%3A00428526%21RIV15-GA0-68081723
rdf:type
skos:Concept n18:Vysledek
dcterms:description
Low cycle fatigue properties of lamellar TiAl with 8 at.% Nb were studied at four temperatures: room temperature, 700, 750 and 800 °C. Up to 750 °C, stable cyclic behaviour is observed while cyclic softening is characteristic for 800°C. The strength of the alloy is still high even at 800 °C. The TEM observation did not reveal any substantial changes in the microstructure due to the cycling at RT. At 750 °C, the lamellar structure was in some places destroyed by cyclic plastic straining and pure -phase islands with high density of dislocation debris were formed. At 800 °C, the domains without lamellar structure cover about 10% of volume and are almost dislocation free. The destruction of lamellar microstructure and possible annealing of dislocation debris is the reason for marked cyclic softening at 800 °C. Low cycle fatigue properties of lamellar TiAl with 8 at.% Nb were studied at four temperatures: room temperature, 700, 750 and 800 °C. Up to 750 °C, stable cyclic behaviour is observed while cyclic softening is characteristic for 800°C. The strength of the alloy is still high even at 800 °C. The TEM observation did not reveal any substantial changes in the microstructure due to the cycling at RT. At 750 °C, the lamellar structure was in some places destroyed by cyclic plastic straining and pure -phase islands with high density of dislocation debris were formed. At 800 °C, the domains without lamellar structure cover about 10% of volume and are almost dislocation free. The destruction of lamellar microstructure and possible annealing of dislocation debris is the reason for marked cyclic softening at 800 °C.
dcterms:title
Microstructure degradation in high temperature fatigue of TiAl Microstructure degradation in high temperature fatigue of TiAl
skos:prefLabel
Microstructure degradation in high temperature fatigue of TiAl Microstructure degradation in high temperature fatigue of TiAl
skos:notation
RIV/68081723:_____/14:00428526!RIV15-GA0-68081723
n3:aktivita
n17:I n17:P
n3:aktivity
I, P(GAP107/11/0704)
n3:cisloPeriodika
AUG
n3:dodaniDat
n13:2015
n3:domaciTvurceVysledku
n11:7704968 n11:2240750
n3:druhVysledku
n4:J
n3:duvernostUdaju
n7:S
n3:entitaPredkladatele
n5:predkladatel
n3:idSjednocenehoVysledku
29260
n3:idVysledku
RIV/68081723:_____/14:00428526
n3:jazykVysledku
n14:eng
n3:klicovaSlova
Low cycle fatigue; lamellar TiAl alloy; high temperature fatigue; dislocations
n3:klicoveSlovo
n9:lamellar%20TiAl%20alloy n9:Low%20cycle%20fatigue n9:high%20temperature%20fatigue n9:dislocations
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[9ABED7650297]
n3:nazevZdroje
International Journal of Fatigue
n3:obor
n16:JL
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:projekt
n15:GAP107%2F11%2F0704
n3:rokUplatneniVysledku
n13:2014
n3:svazekPeriodika
65
n3:tvurceVysledku
Kruml, Tomáš Obrtlík, Karel
n3:wos
000337554000005
s:issn
0142-1123
s:numberOfPages
5
n10:doi
10.1016/j.ijfatigue.2013.10.005