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Cyclic response and fatigue life of TiAl alloys at high temperatures

SYSNO ASEP	0353854
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Cyclic response and fatigue life of TiAl alloys at high temperatures
Author(s)	Kruml, Tomáš (UFM-A)_{RID, ORCID} Obrtlík, Karel (UFM-A)_{RID, ORCID} Petrenec, Martin (UFM-A) Polák, Jaroslav (UFM-A)_{RID, ORCID}
Number of authors	4
Source Title	Key Engineering Materials - ISSN 1013-9826 Roč. 417 - 418, - (2010), s. 585-588
Number of pages	4 s.
Action	8th International Conference on Fracture and Damage Mechanics
Event date	08.09.2009-10.09.2010
VEvent location	St. Georges Bay
Country	MT - Malta
Event type	WRD
Language	eng - English
Country	CH - Switzerland
Keywords	TiAl ; lamellar microstructure ; low cycle fatigue ; transmission electron microscopy
Subject RIV	JL - Materials Fatigue, Friction Mechanics
R&D Projects	GA106/07/0762 GA ČR - Czech Science Foundation (CSF)
	GA106/08/1631 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z20410507 - UFM-A (2005-2011)
UT WOS	000279319200147
DOI	10.4028/www.scientific.net/KEM.417-418.585
Annotation	Fatigue properties of the new generation of TiAl alloys with 8at.% of Nb were studied and compared with those reported in the literature for previous generation with 2at.% of Nb. The high Nb content improves substantially the fatigue life time in the Basquin representation. Nevertheless, the fracture behaviour is still rather brittle even at 750°C. TEM study of the material after the fatigue testing was performed. The dislocation activity is concentrated in the gamma phase. The properties and behaviour of individual dislocations seem to be similar as those observed in single gamma phase TiAl alloys.
Workplace	Institute of Physics of Materials
Contact	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Year of Publishing	2011

Number of the records: 1