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Statements

Subject Item
n2:RIV%2F00216305%3A26210%2F13%3APU110094%21RIV15-MSM-26210___
rdf:type
skos:Concept n15:Vysledek
dcterms:description
The subject of the article is focused on the refining of the cast structure of gamma TiAl-2Nb alloy using cyclic heat treatment and on the analysis of the grain refining mechanism. Microstructure evolution after applied cycles of heat treatment was characterized using light, laser and electron microscopy and using microhardness tests. Application of five heat treatment cycles during which two phase transformations (eutectoid and alpha-recrystallization reactions) repeatedly took place resulted in refining of the cast columnar structure. The mean grain-lamellar colony size 512 mm was transformed to fully lamellar structure containing gamma and alpha2 phases having the mean grain size 229 mm. Lamellae thickness of gamma was not changed while the thickness of alpha2 phase decreased to 78 nm. Refining of alpha2 phase resulted in the increase of the microhardness by 20 %. The recrystallized cast structure obtained by cyclic heat treatment and the knowledge on the mechanisms of the refining the structure w The subject of the article is focused on the refining of the cast structure of gamma TiAl-2Nb alloy using cyclic heat treatment and on the analysis of the grain refining mechanism. Microstructure evolution after applied cycles of heat treatment was characterized using light, laser and electron microscopy and using microhardness tests. Application of five heat treatment cycles during which two phase transformations (eutectoid and alpha-recrystallization reactions) repeatedly took place resulted in refining of the cast columnar structure. The mean grain-lamellar colony size 512 mm was transformed to fully lamellar structure containing gamma and alpha2 phases having the mean grain size 229 mm. Lamellae thickness of gamma was not changed while the thickness of alpha2 phase decreased to 78 nm. Refining of alpha2 phase resulted in the increase of the microhardness by 20 %. The recrystallized cast structure obtained by cyclic heat treatment and the knowledge on the mechanisms of the refining the structure w
dcterms:title
Effect of Cyclic Heat Treatment on Cast Structure of TiAl Alloy Effect of Cyclic Heat Treatment on Cast Structure of TiAl Alloy
skos:prefLabel
Effect of Cyclic Heat Treatment on Cast Structure of TiAl Alloy Effect of Cyclic Heat Treatment on Cast Structure of TiAl Alloy
skos:notation
RIV/00216305:26210/13:PU110094!RIV15-MSM-26210___
n3:aktivita
n9:S
n3:aktivity
S
n3:cisloPeriodika
9
n3:dodaniDat
n12:2015
n3:domaciTvurceVysledku
n7:1590979 n7:3491870
n3:druhVysledku
n14:J
n3:duvernostUdaju
n4:S
n3:entitaPredkladatele
n17:predkladatel
n3:idSjednocenehoVysledku
71448
n3:idVysledku
RIV/00216305:26210/13:PU110094
n3:jazykVysledku
n13:eng
n3:klicovaSlova
TiAl alloy, cyclic heat treatment, refined cast structure, discontinuous coarsening, microhardness
n3:klicoveSlovo
n6:cyclic%20heat%20treatment n6:microhardness n6:discontinuous%20coarsening n6:refined%20cast%20structure n6:TiAl%20alloy
n3:kodStatuVydavatele
CH - Švýcarská konfederace
n3:kontrolniKodProRIV
[6906DE24A757]
n3:nazevZdroje
Key Engineering Materials (print)
n3:obor
n18:JL
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
4
n3:rokUplatneniVysledku
n12:2013
n3:svazekPeriodika
586
n3:tvurceVysledku
Němec, Karel Heczko, Milan Petrenec, Martin Vraspírová, Eva
s:issn
1013-9826
s:numberOfPages
4
n11:doi
10.4028/www.scientific.net/KEM.586.222
n16:organizacniJednotka
26210