About: Microstructure degradation in high temperature fatigue of TiAl

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Low cycle fatigue properties of lamellar TiAl with 8 at.% Nb were studied at four temperatures: room temperature, 700, 750 and 800 °C. Up to 750 °C, stable cyclic behaviour is observed while cyclic softening is characteristic for 800°C. The strength of the alloy is still high even at 800 °C. The TEM observation did not reveal any substantial changes in the microstructure due to the cycling at RT. At 750 °C, the lamellar structure was in some places destroyed by cyclic plastic straining and pure -phase islands with high density of dislocation debris were formed. At 800 °C, the domains without lamellar structure cover about 10% of volume and are almost dislocation free. The destruction of lamellar microstructure and possible annealing of dislocation debris is the reason for marked cyclic softening at 800 °C. Low cycle fatigue properties of lamellar TiAl with 8 at.% Nb were studied at four temperatures: room temperature, 700, 750 and 800 °C. Up to 750 °C, stable cyclic behaviour is observed while cyclic softening is characteristic for 800°C. The strength of the alloy is still high even at 800 °C. The TEM observation did not reveal any substantial changes in the microstructure due to the cycling at RT. At 750 °C, the lamellar structure was in some places destroyed by cyclic plastic straining and pure -phase islands with high density of dislocation debris were formed. At 800 °C, the domains without lamellar structure cover about 10% of volume and are almost dislocation free. The destruction of lamellar microstructure and possible annealing of dislocation debris is the reason for marked cyclic softening at 800 °C. (en)
Title	Microstructure degradation in high temperature fatigue of TiAl Microstructure degradation in high temperature fatigue of TiAl (en)
skos:prefLabel	Microstructure degradation in high temperature fatigue of TiAl Microstructure degradation in high temperature fatigue of TiAl (en)
skos:notation	RIV/68081723:_____/14:00428526!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...iv/cisloPeriodika	AUG
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Obrtlík, Karel Kruml, Tomáš
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	29260
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/14:00428526
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Low cycle fatigue; lamellar TiAl alloy; high temperature fatigue; dislocations (en)
http://linked.open.../riv/klicoveSlovo	dislocations high temperature fatigue lamellar TiAl alloy Low cycle fatigue
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[9ABED7650297]
http://linked.open...i/riv/nazevZdroje	International Journal of Fatigue
http://linked.open...in/vavai/riv/obor	JL
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (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...v/svazekPeriodika	65
http://linked.open...iv/tvurceVysledku	Kruml, Tomáš Obrtlík, Karel
http://linked.open...ain/vavai/riv/wos	000337554000005
issn	0142-1123
number of pages	5 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.ijfatigue.2013.10.005

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