Generalization of the Lifshitz-Slyozov-Wagner coarsening theory to non-dilute multi-component systems

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F14%3A00435178" target="_blank" >RIV/68081723:_____/14:00435178 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.actamat.2014.05.042" target="_blank" >http://dx.doi.org/10.1016/j.actamat.2014.05.042</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.actamat.2014.05.042" target="_blank" >10.1016/j.actamat.2014.05.042</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Generalization of the Lifshitz-Slyozov-Wagner coarsening theory to non-dilute multi-component systems

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Generalization of the Lifshitz-Slyozov-Wagner coarsening theory to non-dilute multi-component systems

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BJ - Termodynamika

OECD FORD obor

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Projekt

<a href="/cs/project/GA14-24252S" target="_blank" >GA14-24252S: Příprava a optimalizace creepu odolných kompozitů s Fe-Al matricí a částicemi Al2O3 s submikronovou strukturou</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Acta Materialia

ISSN

1359-6454

e-ISSN

—

Svazek periodika

79

Číslo periodika v rámci svazku

OCT

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

304-314

Kód UT WoS článku

000342718400030

EID výsledku v databázi Scopus

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