Precipitation in the Fe-38 at.% Al-1 at.% C alloy

0351046 - FZÚ 2011 RIV GB eng J - Článek v odborném periodiku
Kopeček, Jaromír - Haušild, P. - Jurek, Karel - Jarošová, Markéta - Drahokoupil, J. - Novák, P. - Šíma, V.
Precipitation in the Fe-38 at.% Al-1 at.% C alloy.
Intermetallics. Roč. 18, č. 7 (2010), s. 1327-1331. ISSN 0966-9795. E-ISSN 1879-0216
Grant CEP: GA ČR(CZ) GAP107/10/0438; GA AV ČR IAA1010414
Výzkumný záměr: CEZ:AV0Z10100520
Klíčová slova: iron aluminides, based on FeAl * phase identification * precipitates * crystal growth * electron microscopy, scanning
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 2.327, rok: 2010
http://dx.doi.org/10.1016/j.intermet.2010.03.027

The microstructure and crystallization behavior of a conventionally cast Fe-38 at.% Al-1 at.% C alloy and a set of crystals obtained from this alloy by the Bridgman and the floating-zone methods were investigated. A significant redistribution of elements during crystallization was observed. A two-phase microstructure of the κ-phase in the B2 matrix was found in regions with composition below 37 at.% Al and 0.5 at.% C. A microstructure consisting of the κ-phase and B2 matrix with a limited amount of graphite globules was obtained in the fast-solidified Bridgman sample. An enhanced growth of graphite lathes in the Bridgman crystal was observed at a growth rate of 28 mm h-1. These graphite lathes were oriented parallel to the {100} and {110} planes. The κ-phase precipitates have no orientation relationship with the matrix.
Trvalý link: http://hdl.handle.net/11104/0190882