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Statements

Subject Item
n2:RIV%2F00216305%3A26210%2F11%3APU92952%21RIV15-GA0-26210___
rdf:type
n7:Vysledek skos:Concept
dcterms:description
The low-cycle fatigue properties of cast nearly lamellar TiAl alloys with diverse Nb content at room temperature and 750C were compared. Monotonic tensile curves, cyclic stress-strain curves (CSSC) and combined fatigue life curves were obtained at both temperatures. After cyclic straining the surface relief and the fracture surfaces were observed using scanning electron microscopy. The increase in Nb content significantly improves tensile properties and CSSCs at both temperatures. The combined fatigue life curves especially at 750C are shifted to higher fatigue lives. The effect o Nb content on the tensile and cyclic strength is discussed in relation to the thickness of the lamellae. Persistent slip markings formed along interlamellar interfaces were predominant locations for fatigue cracks. At both temperatures and materials showed similar crack initiation and propagation behavior. The cracks initiated at surface or in sub-surface region creating smooth flat areas corresponding to the persistent slip The low-cycle fatigue properties of cast nearly lamellar TiAl alloys with diverse Nb content at room temperature and 750C were compared. Monotonic tensile curves, cyclic stress-strain curves (CSSC) and combined fatigue life curves were obtained at both temperatures. After cyclic straining the surface relief and the fracture surfaces were observed using scanning electron microscopy. The increase in Nb content significantly improves tensile properties and CSSCs at both temperatures. The combined fatigue life curves especially at 750C are shifted to higher fatigue lives. The effect o Nb content on the tensile and cyclic strength is discussed in relation to the thickness of the lamellae. Persistent slip markings formed along interlamellar interfaces were predominant locations for fatigue cracks. At both temperatures and materials showed similar crack initiation and propagation behavior. The cracks initiated at surface or in sub-surface region creating smooth flat areas corresponding to the persistent slip
dcterms:title
Low cycle fatigue of cast gamma-TiAl based alloys at high temperature Low cycle fatigue of cast gamma-TiAl based alloys at high temperature
skos:prefLabel
Low cycle fatigue of cast gamma-TiAl based alloys at high temperature Low cycle fatigue of cast gamma-TiAl based alloys at high temperature
skos:notation
RIV/00216305:26210/11:PU92952!RIV15-GA0-26210___
n3:aktivita
n13:S n13:P n13:Z
n3:aktivity
P(GA106/07/0762), P(GA106/08/1631), S, Z(AV0Z20410507)
n3:cisloPeriodika
3/2011
n3:dodaniDat
n4:2015
n3:domaciTvurceVysledku
n15:6050956
n3:druhVysledku
n12:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n17:predkladatel
n3:idSjednocenehoVysledku
210003
n3:idVysledku
RIV/00216305:26210/11:PU92952
n3:jazykVysledku
n10:eng
n3:klicovaSlova
Low cycle fatigue, lamellar TiAl alloys, high temperature, PSMs, fracture surface
n3:klicoveSlovo
n8:high%20temperature n8:PSMs n8:lamellar%20TiAl%20alloys n8:Low%20cycle%20fatigue n8:fracture%20surface
n3:kodStatuVydavatele
CH - Švýcarská konfederace
n3:kontrolniKodProRIV
[DE68F80A3F76]
n3:nazevZdroje
Key Engineering Materials (print)
n3:obor
n19:JL
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
5
n3:projekt
n16:GA106%2F08%2F1631 n16:GA106%2F07%2F0762
n3:rokUplatneniVysledku
n4:2011
n3:svazekPeriodika
452-453
n3:tvurceVysledku
Obrtlík, Karel Petrenec, Martin Šmíd, Miroslav Polák, Jaroslav Kruml, Tomáš
n3:zamer
n14:AV0Z20410507
s:issn
1013-9826
s:numberOfPages
4
n11:organizacniJednotka
26210