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Statements

Subject Item
n2:RIV%2F68378271%3A_____%2F14%3A00432480%21RIV15-GA0-68378271
rdf:type
skos:Concept n18:Vysledek
dcterms:description
Young s moduli of superelastic NiTi wires in austenite and stress-induced martensite states were evaluated by three different experimental methods (tensile tests, in situ synchrotron x-ray diffraction, and dynamic mechanical analysis) and estimated via theoretical calculation from elastic constants. The unusually low value of the Young s modulus of the martensite phase appearing in material property tables (<40 GPa) is generally ascribed in the literature to the fact that stress-driven martensitic transformation and/or twinning processes continue even beyond the transformation range and effectively decrease the value of the tangent modulus evaluated from macroscopic stress-strain curve. In this work, we claim that this low value is real in the sense that it corresponds to the appropriate combination of elastic constants of the B19´ martensite phase forming the polycrystalline wire. Young s moduli of superelastic NiTi wires in austenite and stress-induced martensite states were evaluated by three different experimental methods (tensile tests, in situ synchrotron x-ray diffraction, and dynamic mechanical analysis) and estimated via theoretical calculation from elastic constants. The unusually low value of the Young s modulus of the martensite phase appearing in material property tables (<40 GPa) is generally ascribed in the literature to the fact that stress-driven martensitic transformation and/or twinning processes continue even beyond the transformation range and effectively decrease the value of the tangent modulus evaluated from macroscopic stress-strain curve. In this work, we claim that this low value is real in the sense that it corresponds to the appropriate combination of elastic constants of the B19´ martensite phase forming the polycrystalline wire.
dcterms:title
Young´s modulus of austenite and martensite phases in superelastic NiTi wires Young´s modulus of austenite and martensite phases in superelastic NiTi wires
skos:prefLabel
Young´s modulus of austenite and martensite phases in superelastic NiTi wires Young´s modulus of austenite and martensite phases in superelastic NiTi wires
skos:notation
RIV/68378271:_____/14:00432480!RIV15-GA0-68378271
n3:aktivita
n11:P n11:I
n3:aktivity
I, P(GA14-15264S), P(GAP107/12/0800), P(GB14-36566G), P(GPP108/12/P111)
n3:cisloPeriodika
7
n3:dodaniDat
n16:2015
n3:domaciTvurceVysledku
n10:7613628 n10:5098203 n10:7813880
n3:druhVysledku
n8:J
n3:duvernostUdaju
n15:S
n3:entitaPredkladatele
n13:predkladatel
n3:idSjednocenehoVysledku
56511
n3:idVysledku
RIV/68378271:_____/14:00432480
n3:jazykVysledku
n9:eng
n3:klicovaSlova
mechanical; modeling and simulation; non-ferrous metals
n3:klicoveSlovo
n5:mechanical n5:non-ferrous%20metals n5:modeling%20and%20simulation
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[454CAB53B883]
n3:nazevZdroje
Journal of Materials Engineering and Performance
n3:obor
n17:BM
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
6
n3:projekt
n4:GB14-36566G n4:GAP107%2F12%2F0800 n4:GPP108%2F12%2FP111 n4:GA14-15264S
n3:rokUplatneniVysledku
n16:2014
n3:svazekPeriodika
23
n3:tvurceVysledku
Heller, Luděk Curfs, C. Favier, D. Alonso, T. Šittner, Petr Pilch, Jan
n3:wos
000339010700002
s:issn
1059-9495
s:numberOfPages
12
n14:doi
10.1007/s11665-014-0976-x