Modelling of grain refinement driven by negative grain boundary energy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F17%3A00476921" target="_blank" >RIV/68081723:_____/17:00476921 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1080/14786435.2017.1322728" target="_blank" >http://dx.doi.org/10.1080/14786435.2017.1322728</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/14786435.2017.1322728" target="_blank" >10.1080/14786435.2017.1322728</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Modelling of grain refinement driven by negative grain boundary energy

Popis výsledku v původním jazyce

Grain refinement can be described by the classical kinetic equation using a negative value of the specific grain boundary Gibbs energy. A respective overview is offered reporting according observations and simulations, particularly linked to grain boundary segregation. Classical grain growth model is used in the treatment of evolution of the distribution function during refinement. The adapted model requires defining nucleation rate of new grains, which significantly influences the kinetics of the system of grains. Moreover, a jump in the distribution function is allowed at a certain value of the grain radius R-J, which separates old grains from newly nucleated ones. Evolution equation for both the critical radius R-c and separation radius R-J (jump position) as well as for the dimension-free distribution (shape) function are derived. Illustrative examples for the evolution of the system parameters under various nucleation rates of newly generated grains are presented.

Název v anglickém jazyce

Modelling of grain refinement driven by negative grain boundary energy

Popis výsledku anglicky

Grain refinement can be described by the classical kinetic equation using a negative value of the specific grain boundary Gibbs energy. A respective overview is offered reporting according observations and simulations, particularly linked to grain boundary segregation. Classical grain growth model is used in the treatment of evolution of the distribution function during refinement. The adapted model requires defining nucleation rate of new grains, which significantly influences the kinetics of the system of grains. Moreover, a jump in the distribution function is allowed at a certain value of the grain radius R-J, which separates old grains from newly nucleated ones. Evolution equation for both the critical radius R-c and separation radius R-J (jump position) as well as for the dimension-free distribution (shape) function are derived. Illustrative examples for the evolution of the system parameters under various nucleation rates of newly generated grains are presented.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20303 - Thermodynamics

Projekt

<a href="/cs/project/GA15-06390S" target="_blank" >GA15-06390S: Využití teoretických a experimentálních přístupů ke slinování pro získání optimální mikrostruktury a vlastností pokročilých keramických materiálů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Philosophical Magazine

ISSN

1478-6435

e-ISSN

—

Svazek periodika

97

Číslo periodika v rámci svazku

23

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

15

Strana od-do

1963-1977

Kód UT WoS článku

000404063900002

EID výsledku v databázi Scopus

2-s2.0-85021355526