Creep of Fe–Al alloys with additions of niobium and carbon

0354247 - ÚFM 2011 RIV CH eng J - Článek v odborném periodiku
Dobeš, Ferdinand
Creep of Fe–Al alloys with additions of niobium and carbon.
Key Engineering Materials. Roč. 465, - (2011), s. 443-446. ISSN 1013-9826.
[MSMF /6./ Materials Structure and Micromechanics of Fracture. Brno, 28.06.2010-30.06.2010]
Grant CEP: GA ČR GA106/08/1238
Výzkumný záměr: CEZ:AV0Z20410507
Klíčová slova: iron aluminides * creep * activation energy
Kód oboru RIV: JG - Hutnictví, kovové materiály

High-temperature creep of a Fe3Al-type iron aluminide alloyed by niobium and different additions of carbon was studied in the temperature range from 600 to 800 °C. The alloys contained (atomic %) (i) 27.6 Al, 1.15 Nb, 0.19 C and (ii) 27.1 Al, 1.11Nb, 0.76 C (Fe balance). Creep tests were performed in compression at constant load with stepwise loading. Stress exponent and activation energy of the creep rate were determined. Creep resistance of the low-carbon alloy is better at lower temperatures, while the opposite is true at temperature of 800 °C.
Trvalý link: http://hdl.handle.net/11104/0193295