About: < c >-component plastic displacements in different microstructures of TiAl-base intermetallics

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Byly studovány tři různé mikrostruktury intermetalika Ti-48Al-2Cr-2Nb-B (at.%),téměř lamelární (NL) a equiaxiální s nízkým obsahem fáze alfa 2(ELA)a vysokým obsahem alfa 2 (EHA). Tři mikrostrukturní typy se projevily různým creepovým chováním při 973 K a 350 MPa. Byly provedeny přerušené creepové zkoušky pro hodnocení vývoje hustoty dislokací a rozvoje dvojčatění s rostoucí creepovou deformací. Výsledky nasvědčují relevantnímu uplatnění dvojčatění a vysvětlují rozdíly creepového chování slitin NL a EHA pokud jde o akumulační kinetiku deformace při vysoké teplotě a činí mikrostruktury NL and EHA méně resistentní při creepu. (cs) Three different microstructures of a near-gamma Ti-48Al-2Cr-2Nb-B (at.%) alloy, nearly lamellar (NL), equiaxed with a low alpha(2) phase volume fraction (ELA), and equiaxed with the high alpha2 phase volume fraction (EHA) were investigated. The three microstructural types exhibited different creep behaviour at 973 K and 350 MPa. Interrupted creep tests were performed to assess the evolution of dislocation densities and deformation twinning with increasing creep strain. Results of the quantitative analysis suggest that deformation twinning represents a relevant contribution to the strain accumulation kinetics at high temperatures and makes NL and EHA microstructures less creep resistant but more ductile. Three different microstructures of a near-gamma Ti-48Al-2Cr-2Nb-B (at.%) alloy, nearly lamellar (NL), equiaxed with a low alpha(2) phase volume fraction (ELA), and equiaxed with the high alpha2 phase volume fraction (EHA) were investigated. The three microstructural types exhibited different creep behaviour at 973 K and 350 MPa. Interrupted creep tests were performed to assess the evolution of dislocation densities and deformation twinning with increasing creep strain. Results of the quantitative analysis suggest that deformation twinning represents a relevant contribution to the strain accumulation kinetics at high temperatures and makes NL and EHA microstructures less creep resistant but more ductile. (en)
Title	< c >-component plastic displacements in different microstructures of TiAl-base intermetallics < c >-component plastic displacements in different microstructures of TiAl-base intermetallics (en) < c >-složka plastického posunutí v různých mikrostrukturách intermetalik na bázi TiAl (cs)
skos:prefLabel	< c >-component plastic displacements in different microstructures of TiAl-base intermetallics < c >-component plastic displacements in different microstructures of TiAl-base intermetallics (en) < c >-složka plastického posunutí v různých mikrostrukturách intermetalik na bázi TiAl (cs)
skos:notation	RIV/68081723:_____/08:00322323!RIV09-AV0-68081723
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(1QS200410502), P(OC 522.100), Z(AV0Z20410507)
http://linked.open...iv/cisloPeriodika	Sp.Iss.SI
http://linked.open...vai/riv/dodaniDat	2009
http://linked.open...aciTvurceVysledku	Orlová, Alena Dlouhý, Antonín Kuchařová, Květa
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
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	358699
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/08:00322323
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	intermetallics; creep; transmission electron microscopy; titanium aluminides (en)
http://linked.open.../riv/klicoveSlovo	titanium aluminides intermetallics creep transmission electron microscopy
http://linked.open...odStatuVydavatele	CH - Švýcarská konfederace
http://linked.open...ontrolniKodProRIV	[C5134A97F60B]
http://linked.open...i/riv/nazevZdroje	Materials Science and Engineering A-Structural materials
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Properties of engineering materials under development applicable in the near future in traffic, medicine and power generating industry http://linked.opendata.cz/resource/domain/vavai/projekt/OC%20522.100
http://linked.open...UplatneniVysledku	2008
http://linked.open...v/svazekPeriodika	483
http://linked.open...iv/tvurceVysledku	Dlouhý, Antonín Kuchařová, Květa Orlová, Alena
http://linked.open...ain/vavai/riv/wos	000256071100026
http://linked.open...n/vavai/riv/zamer	Physical properties of advanced materials in relation to their microstructure and processing
issn	0921-5093
number of pages	4 (xsd:int)
is http://linked.open...avai/riv/vysledek of	< c >-component plastic displacements in different microstructures of TiAl-base intermetallics < c >-component plastic displacements in different microstructures of TiAl-base intermetallics

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