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Microstructure characterization of rapidly solidified Al-Fe-Cr-Ce alloy by positron annihilation spectroscopy
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SYSNO ASEP 0437336 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Microstructure characterization of rapidly solidified Al-Fe-Cr-Ce alloy by positron annihilation spectroscopy Tvůrce(i) Michalcová, A. (CZ)
Vojtěch, D. (CZ)
Čízek, J. (CZ)
Procházka, I. (CZ)
Drahokoupil, Jan (FZU-D) RID, ORCID
Novák, P. (CZ)Zdroj.dok. Journal of Alloys and Compounds. - : Elsevier - ISSN 0925-8388
Roč. 509, č. 7 (2011), s. 3211-3218Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova metals and alloys ; nanostructured materials ; rapid solidification ; positron spectroscopies ; transmission electron microscopy ; x-ray diffraction Vědní obor RIV BM - Fyzika pevných látek a magnetismus CEZ AV0Z10100520 - FZU-D (2005-2011) UT WOS 000287570100005 DOI 10.1016/j.jallcom.2010.12.049 Anotace Positron annihilation spectroscopy was employed for the microstructure characterization of rapidly solidified Al-3 wt.% Cr-3 wt.% Fe-0.8 wt.% Ce alloy prepared by melt spinning. Results of the positron annihilation study are analyzed within the diffusion trapping model and compared with results of X-ray diffraction, transmission electron microscopy and microhardness measurements. A good consistency among all experimental techniques was obtained. The rapidly solidified alloy exhibits ultra fine grained structure, consisting of cells separated by dislocation walls. Annealed samples showed no significant changes in structure up to 400 degrees C which proves good thermal stability of ultra fine grained structure. Exposure of the sample to temperature of 500 degrees C caused significant changes in the material. Pracoviště Fyzikální ústav Kontakt Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Rok sběru 2015
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