About: Effect of Cyclic Heat Treatment on Cast Structure of TiAl Alloy

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
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 micrometers was transformed to fully lamellar structure containing gamma and alpha2 phases having the mean grain size 229 micrometers. 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 were compared and discussed with the literature data. 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 micrometers was transformed to fully lamellar structure containing gamma and alpha2 phases having the mean grain size 229 micrometers. 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 were compared and discussed with the literature data. (en)
Title	Effect of Cyclic Heat Treatment on Cast Structure of TiAl Alloy Effect of Cyclic Heat Treatment on Cast Structure of TiAl Alloy (en)
skos:prefLabel	Effect of Cyclic Heat Treatment on Cast Structure of TiAl Alloy Effect of Cyclic Heat Treatment on Cast Structure of TiAl Alloy (en)
skos:notation	RIV/68081723:_____/14:00397330!RIV15-GA0-68081723
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GAP107/11/0704)
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Petrenec, Martin Heczko, Milan
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyziky materiálů AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	13210
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/14:00397330
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	TiAl alloy; cyclic heat treatment; refined cast structure; discontinuous coarsening; microhardness (en)
http://linked.open.../riv/klicoveSlovo	TiAl alloy cyclic heat treatment discontinuous coarsening microhardness refined cast structure
http://linked.open...ontrolniKodProRIV	[E561288816CC]
http://linked.open...v/mistoKonaniAkce	Levoča
http://linked.open...i/riv/mistoVydani	Zurich
http://linked.open...i/riv/nazevZdroje	Local Mechanical Properties IX
http://linked.open...in/vavai/riv/obor	JL
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Optimization of structure and properties of advanced high-temperature cast materials alloyed with carbon by complex heat treatment
http://linked.open...UplatneniVysledku	2014
http://linked.open...iv/tvurceVysledku	Petrenec, Martin Heczko, Milan Němec, K. Vraspírová, E.
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open...ain/vavai/riv/wos	000336633500054
http://linked.open.../riv/zahajeniAkce	2012-11-07 (xsd:date)
issn	1013-9826
number of pages	4 (xsd:int)
http://bibframe.org/vocab/doi	10.4028/www.scientific.net/KEM.586.222
http://purl.org/ne...btex#hasPublisher	Trans Tech Publications
https://schema.org/isbn	978-3-03785-876-9

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