Improved thermodynamic treatment of vacancy-mediated diffusion and creep

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F16%3A00464081" target="_blank" >RIV/68081723:_____/16:00464081 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.actamat.2016.01.017" target="_blank" >http://dx.doi.org/10.1016/j.actamat.2016.01.017</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.actamat.2016.01.017" target="_blank" >10.1016/j.actamat.2016.01.017</a>

Result language

angličtina

Original language name

Improved thermodynamic treatment of vacancy-mediated diffusion and creep

Original language description

Approximately a decade ago a new concept to describe the kinetics of one-phase solid state systems evolving by diffusion and activity of vacancies has been published by the authors. The concept is based on the Onsager-Ziegler Thermodynamic Extremal Principle (TEP). In course of the last decade several improvements and corrections have been performed, which justify an overworking of the concept. A short introduction of the TEP is followed by a detail investigation of the Gibbs energy and its rate as well as of dissipation and dissipation function due to multicomponent diffusion process coupled with vacancy activity provoking swelling/shrinkage and creep and thus internal stress state development. The application of TEP allows an exact derivation of driving forces for the coupled processes. The Manning theory of diffusion is applied and the derivation of evolution equations for all system parameters (site fractions, swelling/shrinkage and creep strain tensor) is provided.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BJ - Thermodynamics

OECD FORD branch

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Project

<a href="/en/project/GA15-06390S" target="_blank" >GA15-06390S: Utilization of theoretical and experimental approaches to sintering for tailoring the microstructure and properties of advanced ceramic materials</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Name of the periodical

Acta Materialia

ISSN

1359-6454

e-ISSN

—

Volume of the periodical

108

Issue of the periodical within the volume

APR

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

347-354

UT code for WoS article

000374072700032

EID of the result in the Scopus database

2-s2.0-84969335388