About: EFFECT OF CYCLIC HEAT TREATMENT ON CAST STRUCTURE OF TIAL ALLOY

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://vavtest.unob.cz/registr
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 micrometres was transformed to fully lamellar structure containing gamma and alpha2 phases having the mean grain size 229 micrometres. 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 micrometres was transformed to fully lamellar structure containing gamma and alpha2 phases having the mean grain size 229 micrometres. 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/60162694:G43__/13:00499364!RIV14-MO0-G43_____
http://linked.open...avai/riv/aktivita	I
http://linked.open...avai/riv/aktivity	I
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Vraspírová, Eva
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	Ministerstvo obrany / Univerzita obrany - Fakulta vojenských technologií Brno
http://linked.open...dnocenehoVysledku	71449
http://linked.open...ai/riv/idVysledku	RIV/60162694:G43__/13:00499364
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	TiAl alloy; cyclic heat treatment; refining cast structure; discontinuous coarsening; microhardness (en)
http://linked.open.../riv/klicoveSlovo	TiAl alloy cyclic heat treatment discontinuous coarsening refining cast structure microhardness
http://linked.open...ontrolniKodProRIV	[87F3BAD62AD3]
http://linked.open...v/mistoKonaniAkce	Brno
http://linked.open...i/riv/mistoVydani	Brno, Czech Republic
http://linked.open...i/riv/nazevZdroje	ICMT´13 INTERNATIONAL CONFERENCE ON MILITARY TECHNOLOGIES 2013
http://linked.open...in/vavai/riv/obor	KA
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...UplatneniVysledku	2013
http://linked.open...iv/tvurceVysledku	Petrenec, Martin Vraspírová, Eva
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2013-05-22 (xsd:date)
number of pages	4 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Univerzita obrany
https://schema.org/isbn	978-80-7231-918-3
http://localhost/t...ganizacniJednotka	G43

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