Počet záznamů: 1
Generalization of the Lifshitz-Slyozov-Wagner coarsening theory to non-dilute multi-component systems
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SYSNO ASEP 0435178 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Generalization of the Lifshitz-Slyozov-Wagner coarsening theory to non-dilute multi-component systems Tvůrce(i) Svoboda, Jiří (UFM-A) RID, ORCID
Fischer, F. D. (AT)Celkový počet autorů 2 Zdroj.dok. Acta Materialia. - : Elsevier - ISSN 1359-6454
Roč. 79, OCT (2014), s. 304-314Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Coarsening ; Ostwald ripening ; Multicomponent ; Theory and modelling ; Non-zero volume fraction of precipitates Vědní obor RIV BJ - Termodynamika CEP GA14-24252S GA ČR - Grantová agentura ČR Institucionální podpora UFM-A - RVO:68081723 UT WOS 000342718400030 EID SCOPUS 84905789995 DOI 10.1016/j.actamat.2014.05.042 Anotace The coarsening of precipitates in a matrix with a non-zero volume fraction is treated by assuming that the exchange of matter between the precipitates occurs by diffusion in the matrix within finite zones surrounding the precipitates. The thermodynamic extremal principle is used for the derivation of evolution equations for the precipitate radii. Accordingly, non-steady-state and steady-state distribution functions are deduced, depending on the system parameter characterizing the finite diffusion zones. The distribution functions tend exactly to the established Lifshitz-Slyozov-Wagner distribution for a zero volume fraction of the precipitates. The steady-state distribution functions are expressed by means of distinct volume-fraction-dependent parameters, which are presented by analytical expressions and in diagrams. To treat non-steady-state systems, ensembles of up to 10(6) precipitates can easily be handled by standard computational methods. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2015
Počet záznamů: 1