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Statements

Subject Item
n2:RIV%2F68081723%3A_____%2F10%3A00346327%21RIV11-GA0-68081723
rdf:type
n17:Vysledek skos:Concept
dcterms:description
The low-cycle fatigue properties of TiAl alloys with 2 at.% and 7 at.% of Nb with nearly lamellar microstructure were studied at room temperature and 750 degrees C. Cyclic hardening/softening curves, cyclic stress-strain curves (CSSC) and fatigue life curves were obtained at both temperatures as well as monotonic tensile properties. Both materials show stable cyclic response at 750 degrees C. At room temperature, significant cyclic hardening characteristic for 2 at.% Nb alloy is not observed for 7 at.% Nb alloy. This difference is attributed to higher Nb content which increases the stacking fault energy and thus prevents intensive twinning. Parameters of the CSSC, the Manson-Coffin law and the Basquin law were determined. The cyclic strength of the alloy with 7 at.% Nb is substantially higher in comparison with 2 at.% Nb, probably due to lower thickness of the lamellas. The low-cycle fatigue properties of TiAl alloys with 2 at.% and 7 at.% of Nb with nearly lamellar microstructure were studied at room temperature and 750 degrees C. Cyclic hardening/softening curves, cyclic stress-strain curves (CSSC) and fatigue life curves were obtained at both temperatures as well as monotonic tensile properties. Both materials show stable cyclic response at 750 degrees C. At room temperature, significant cyclic hardening characteristic for 2 at.% Nb alloy is not observed for 7 at.% Nb alloy. This difference is attributed to higher Nb content which increases the stacking fault energy and thus prevents intensive twinning. Parameters of the CSSC, the Manson-Coffin law and the Basquin law were determined. The cyclic strength of the alloy with 7 at.% Nb is substantially higher in comparison with 2 at.% Nb, probably due to lower thickness of the lamellas.
dcterms:title
Influence of niobium alloying on the low cycle fatigue of cast TiAl alloys at room and high temperatures Influence of niobium alloying on the low cycle fatigue of cast TiAl alloys at room and high temperatures
skos:prefLabel
Influence of niobium alloying on the low cycle fatigue of cast TiAl alloys at room and high temperatures Influence of niobium alloying on the low cycle fatigue of cast TiAl alloys at room and high temperatures
skos:notation
RIV/68081723:_____/10:00346327!RIV11-GA0-68081723
n3:aktivita
n7:P n7:Z
n3:aktivity
P(GA106/07/0762), P(GA106/08/1631), Z(AV0Z20410507)
n3:cisloPeriodika
1
n3:dodaniDat
n11:2011
n3:domaciTvurceVysledku
n15:7704968 n15:9878467 n15:1204726 n15:2240750 n15:9884149
n3:druhVysledku
n9:J
n3:duvernostUdaju
n14:S
n3:entitaPredkladatele
n8:predkladatel
n3:idSjednocenehoVysledku
263724
n3:idVysledku
RIV/68081723:_____/10:00346327
n3:jazykVysledku
n18:eng
n3:klicovaSlova
Low cycle fatigue; lamellar TiAl alloy; fracture surface
n3:klicoveSlovo
n4:fracture%20surface n4:lamellar%20TiAl%20alloy n4:Low%20cycle%20fatigue
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[0E7A5BF0EFE3]
n3:nazevZdroje
Procedia Engineering
n3:obor
n12:JL
n3:pocetDomacichTvurcuVysledku
5
n3:pocetTvurcuVysledku
5
n3:projekt
n13:GA106%2F08%2F1631 n13:GA106%2F07%2F0762
n3:rokUplatneniVysledku
n11:2010
n3:svazekPeriodika
2
n3:tvurceVysledku
Obrtlík, Karel Buček, Petr Petrenec, Martin Kruml, Tomáš Polák, Jaroslav
n3:zamer
n6:AV0Z20410507
s:issn
1877-7058
s:numberOfPages
9