Počet záznamů: 1
Cyclic response and fatigue life of TiAl alloys at high temperatures
0353854 - UFM-A 2011 RIV CH eng J - Článek v odborném periodiku
Kruml, Tomáš - Obrtlík, Karel - Petrenec, Martin - Polák, Jaroslav
Cyclic response and fatigue life of TiAl alloys at high temperatures.
Key Engineering Materials. Roč. 417 - 418, - (2010), s. 585-588 ISSN 1013-9826.
[8th International Conference on Fracture and Damage Mechanics. St. Georges Bay, 08.09.2009-10.09.2010]
Grant CEP: GA ČR GA106/07/0762; GA ČR GA106/08/1631
Výzkumný záměr: CEZ:AV0Z20410507
Klíčová slova: TiAl * lamellar microstructure * low cycle fatigue * transmission electron microscopy
Kód oboru RIV: JL - Únava materiálu a lomová mechanika
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.
Trvalý link: http://hdl.handle.net/11104/0192983