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 TVT, 2018, Volume 56, Issue 4, Pages 527–532 (Mi tvt10875)

Thermophysical Properties of Materials

Temperature behavior of the viscosity of quasi crystal-forming $Al$–$\rm Cu$$\rm Fe melts L. V. Kamaeva, A. Yu. Korepanov, V. I. Lad'yanov Physical-Technical Institute of the Ural Branch of the Russian Academy of Sciences Abstract: We have studied the temperature and the temporal dependences of the viscosity of quasi crystalforming Al–\rm Cu$$\rm Fe$ melts within the range of $i$-phase $(\rm Al_{62}\rm Cu_{25.5}\rm Fe_{12.5})$ stoichiometry with a change in the concentration of copper from $15.5$ to $35.5$ at $%$ and in that of iron from $2.5$ to $22$ at $%$ as well as within the concentration range in which the $i$-phase is the first to arise from the $\mathrm{Al}_{59.5} + x\mathrm{Cu}_{35.5} - x\mathrm{Fe}_5$ melt $(x = 0$$15). We show for the studied alloys that prolonged (2 h or longer) relaxation processes take place directly after melting in the conditions of the viscosimetric experiment and that they should be taken into account when the temperature dependences of the viscosity are measured. In the equilibrium thermodynamic conditions, the viscosity polytherms coincide for the heating and the cooling regimes; they are monotonous and are well described by the exponential dependence. The activation energy of the viscous flow, depending on the composition, varies from 18 to 36 kJ/mol.  Funding Agency Grant Number Russian Academy of Sciences - Federal Agency for Scientific Organizations ÀÀÀÀ-À16-116021010084-215-17-2-9 The work was performed according to the R&D theme no. AAAA-A16-116021010084-2 and was partly supported by the Ural Branch Foundation for Basic Research, project no. 15-17-2-9. Author to whom correspondence should be addressed DOI: https://doi.org/10.31857/S004036440002717-2 Full text: PDF file (434 kB) References: PDF file HTML file English version: High Temperature, 2018, 56:4, 514–518 Bibliographic databases: UDC: 532.13+542.466:546.625572 Received: 30.05.2017 Accepted:26.12.2017 Citation: L. V. Kamaeva, A. Yu. Korepanov, V. I. Lad'yanov, “Temperature behavior of the viscosity of quasi crystal-forming Al–\rm Cu$$\rm Fe$ melts”, TVT, 56:4 (2018), 527–532; High Temperature, 56:4 (2018), 514–518

Citation in format AMSBIB
\Bibitem{KamKorLad18} \by L.~V.~Kamaeva, A.~Yu.~Korepanov, V.~I.~Lad'yanov \paper Temperature behavior of the viscosity of quasi crystal-forming $\rm Al$--$\rm Cu$--$\rm Fe$ melts \jour TVT \yr 2018 \vol 56 \issue 4 \pages 527--532 \mathnet{http://mi.mathnet.ru/tvt10875} \crossref{https://doi.org/10.31857/S004036440002717-2} \elib{http://elibrary.ru/item.asp?id=36675971} \transl \jour High Temperature \yr 2018 \vol 56 \issue 4 \pages 514--518 \crossref{https://doi.org/10.1134/S0018151X18040077} \isi{http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&DestLinkType=FullRecord&DestApp=ALL_WOS&KeyUT=000445372400007} \elib{http://elibrary.ru/item.asp?id=35748250} \scopus{http://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-85053559323}