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Statements

Subject Item
n2:RIV%2F68081723%3A_____%2F14%3A00434484%21RIV15-GA0-68081723
rdf:type
n17:Vysledek skos:Concept
dcterms:description
Six grades of TiAl alloys doped with 7 at.% Nb and variable content of C and/or Mo were studied. The as-received microstructure and phase composition of the alloys was characterized using neutron diffraction experiments and electron microscopy. They are substantially different in individual alloys. In Mo containing alloys, ordered 0 phase is present while carbon suppresses the occurrence of this phase. Alternating lamellae of and 2 phases are characteristic for all specimens. The specimens have been subjected to monotonic testing (tensile and compression) and to low cycle fatigue testing at ambient and at elevated temperatures. The differences in microstructure result in scatter of mechanical behaviour of the alloys, e.g. the yield stress at 750°C varies from 445 to 626 MPa. The mechanical properties of the materials are discussed in relation to the initial microstructure and phase composition. Six grades of TiAl alloys doped with 7 at.% Nb and variable content of C and/or Mo were studied. The as-received microstructure and phase composition of the alloys was characterized using neutron diffraction experiments and electron microscopy. They are substantially different in individual alloys. In Mo containing alloys, ordered 0 phase is present while carbon suppresses the occurrence of this phase. Alternating lamellae of and 2 phases are characteristic for all specimens. The specimens have been subjected to monotonic testing (tensile and compression) and to low cycle fatigue testing at ambient and at elevated temperatures. The differences in microstructure result in scatter of mechanical behaviour of the alloys, e.g. the yield stress at 750°C varies from 445 to 626 MPa. The mechanical properties of the materials are discussed in relation to the initial microstructure and phase composition.
dcterms:title
Monotonic and cyclic properties of TiAl alloys doped with Nb, Mo and C Monotonic and cyclic properties of TiAl alloys doped with Nb, Mo and C
skos:prefLabel
Monotonic and cyclic properties of TiAl alloys doped with Nb, Mo and C Monotonic and cyclic properties of TiAl alloys doped with Nb, Mo and C
skos:notation
RIV/68081723:_____/14:00434484!RIV15-GA0-68081723
n4:aktivita
n5:I n5:P
n4:aktivity
I, P(ED1.1.00/02.0068), P(GAP107/11/0704)
n4:dodaniDat
n14:2015
n4:domaciTvurceVysledku
n6:7704968 n6:9884149 n6:3491870 n6:8246513 n6:2240750
n4:druhVysledku
n9:D
n4:duvernostUdaju
n19:S
n4:entitaPredkladatele
n18:predkladatel
n4:idSjednocenehoVysledku
30481
n4:idVysledku
RIV/68081723:_____/14:00434484
n4:jazykVysledku
n12:eng
n4:klicovaSlova
TiAl alloys; microstructure; neutron diffraction; fatigue
n4:klicoveSlovo
n11:microstructure n11:neutron%20diffraction n11:TiAl%20alloys n11:fatigue
n4:kontrolniKodProRIV
[38EDC9729258]
n4:mistoKonaniAkce
Verbania
n4:mistoVydani
Amsterdam
n4:nazevZdroje
XVII International Colloquium on Mechanical Fatigue of Metals (ICMFM17)
n4:obor
n20:JL
n4:pocetDomacichTvurcuVysledku
5
n4:pocetTvurcuVysledku
6
n4:projekt
n13:GAP107%2F11%2F0704 n13:ED1.1.00%2F02.0068
n4:rokUplatneniVysledku
n14:2014
n4:tvurceVysledku
Chlupová, Alice Obrtlík, Karel Heczko, Milan Kruml, Tomáš Beran, Přemysl Polák, Jaroslav
n4:typAkce
n15:WRD
n4:zahajeniAkce
2014-06-25+02:00
s:issn
1877-7058
s:numberOfPages
4
n16:doi
10.1016/j.proeng.2014.06.289
n10:hasPublisher
Elsevier