Počet záznamů: 1

Modelling of grain refinement driven by negative grain boundary energy

SYSNO ASEP	0476921
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Modelling of grain refinement driven by negative grain boundary energy
Tvůrce(i)	Fischer, F. D. (AT) Zickler, G. A. (AT) Svoboda, Jiří (UFM-A)_{RID, ORCID}
Celkový počet autorů	3
Zdroj.dok.	Philosophical Magazine. - : Taylor & Francis - ISSN 1478-6435 Roč. 97, č. 23 (2017), s. 1963-1977
Poč.str.	15 s.
Jazyk dok.	eng - angličtina
Země vyd.	CZ - Česká republika
Klíč. slova	grain refinement ; grain nucleation ; distribution concept ; jump on distribution function
Vědní obor RIV	BJ - Termodynamika
Obor OECD	Thermodynamics
CEP	GA15-06390S GA ČR - Grantová agentura ČR
Institucionální podpora	UFM-A - RVO:68081723
UT WOS	000404063900002
EID SCOPUS	85021355526
DOI	10.1080/14786435.2017.1322728
Anotace	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.
Pracoviště	Ústav fyziky materiálu
Kontakt	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Rok sběru	2018

Počet záznamů: 1