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The effect of silicon on the structure of Fe-40 at.% Al type alloys with high contents of carbon (1.9-3.8 at.%)
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SYSNO ASEP 0325368 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The effect of silicon on the structure of Fe-40 at.% Al type alloys with high contents of carbon (1.9-3.8 at.%) Překlad názvu Vliv křemíku na strukturu slitin typu Fe-40 at.% Al s vysokým obsahem uhlíku (1.9-3.8 at.%) Tvůrce(i) Kratochvíl, P. (CZ)
Dobeš, Ferdinand (UFM-A) RID, ORCID
Vodičková, V. (CZ)Zdroj.dok. Intermetallics. - : Elsevier - ISSN 0966-9795
Roč. 17, 1-2 (2009), s. 39-45Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Iron aluminides ; Phase identification ; Microscopy Vědní obor RIV JG - Hutnictví, kovové materiály CEP GA106/08/1238 GA ČR - Grantová agentura ČR CEZ AV0Z20410507 - UFM-A (2005-2011) UT WOS 000261920200007 DOI 10.1016/j.intermet.2008.09.004 Anotace The phase compositions of alloys based on Fe-40 at.% A] with additions of carbon ranging from 1.9 to 3.8 at.% and with and without the addition of 1.2 at.% Si were studied by light optical and transmission electron microscopies, X-ray diffraction and electron probe microanalysis. The structure of the matrix of all alloys is a B2 lattice, inherent to the intermetallic compound FeAl. Two main precipitating phases are observed: graphite and aluminium carbide Al4C3. The quantity of the phases depends in detail on the chemical composition and the heat treatment. The presence of Al4C3 in the alloys with the highest carbon content is in agreement with the recent theoretical prediction of a Fe-Al-C ternary phase diagram by Ohtani et al., as well as with older experiments of Vyklicky and Tuma. The occurrence of Al4C3 is supported by the addition of silicon. Small traces of carbide kappa of perovskite-type Fe3AlC are observed only in the alloys with the lowest aluminium and carbon contents. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2009
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