About: Evolution of microstructures during creep in TiAl-base intermetallics with a different Nb content

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	An evolution of microstructure has been investigated with increasing compression creep strain in intermetallic alloys Ti-48Al-2Cr-2Nb-1B (alloy Nb2) and Ti-46Al-7Nb-0.6Cr-0.2Ni-0.1Si (alloy Nb7) loaded to 350 MPa at 973 K. Scanning electron microscopy and transmission electron microscopy analysis focused on individual deformation modes and on the phase stability of the alloys. Dislocation densities and deformation twinning characteristics were systematically evaluated for strains up to 0.38. Results of these quantitative studies showed that the evolution of total and non-zero < c >-component dislocation densities with strain was similar for all the investigated materials in spite of relevant differences in the initial gamma/alpha 2 microstructures. However, the spacing between deformation twins seemed to scale with the creep strength of the two alloys. These results are discussed in terms of the fundamental deformation modes and their contributions to the strain accumulation kinetics during high temperature creep in TiAl-base intermetallics with a different Nb content. An evolution of microstructure has been investigated with increasing compression creep strain in intermetallic alloys Ti-48Al-2Cr-2Nb-1B (alloy Nb2) and Ti-46Al-7Nb-0.6Cr-0.2Ni-0.1Si (alloy Nb7) loaded to 350 MPa at 973 K. Scanning electron microscopy and transmission electron microscopy analysis focused on individual deformation modes and on the phase stability of the alloys. Dislocation densities and deformation twinning characteristics were systematically evaluated for strains up to 0.38. Results of these quantitative studies showed that the evolution of total and non-zero < c >-component dislocation densities with strain was similar for all the investigated materials in spite of relevant differences in the initial gamma/alpha 2 microstructures. However, the spacing between deformation twins seemed to scale with the creep strength of the two alloys. These results are discussed in terms of the fundamental deformation modes and their contributions to the strain accumulation kinetics during high temperature creep in TiAl-base intermetallics with a different Nb content. (en)
Title	Evolution of microstructures during creep in TiAl-base intermetallics with a different Nb content Evolution of microstructures during creep in TiAl-base intermetallics with a different Nb content (en)
skos:prefLabel	Evolution of microstructures during creep in TiAl-base intermetallics with a different Nb content Evolution of microstructures during creep in TiAl-base intermetallics with a different Nb content (en)
skos:notation	RIV/68081723:_____/10:00440417!RIV15-GA0-68081723
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(1QS200410502), P(GA106/07/0762), Z(AV0Z20410507)
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Orlová, Alena Dlouhý, Antonín Kuchařová, Květa
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	258021
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/10:00440417
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	intermetallics; creep; TiAl (en)
http://linked.open.../riv/klicoveSlovo	intermetallics creep TiAl
http://linked.open...ontrolniKodProRIV	[735E9E9AAAB1]
http://linked.open...v/mistoKonaniAkce	Dresden
http://linked.open...i/riv/mistoVydani	Bristol
http://linked.open...i/riv/nazevZdroje	15th International Conference on the Strength of Materials (ICSMA-15)
http://linked.open...in/vavai/riv/obor	JG
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Structure, properties and metallurgy of near-gamma TiAl alloys Properties of engineering materials under development applicable in the near future in traffic, medicine and power generating industry
http://linked.open...UplatneniVysledku	2010
http://linked.open...iv/tvurceVysledku	Dlouhý, Antonín Kuchařová, Květa Orlová, Alena
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open...ain/vavai/riv/wos	000286515800091
http://linked.open.../riv/zahajeniAkce	2009-08-16 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Physical properties of advanced materials in relation to their microstructure and processing
issn	1742-6588
number of pages	6 (xsd:int)
http://bibframe.org/vocab/doi	10.1088/1742-6596/240/1/012091
http://purl.org/ne...btex#hasPublisher	IOP Publishing

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