Kinetics of Grain Boundary Networks Controlled by Triple Junction and Grain Boundary Mobility

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F18%3A00497450" target="_blank" >RIV/68081723:_____/18:00497450 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.3390/met8120977" target="_blank" >http://dx.doi.org/10.3390/met8120977</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/met8120977" target="_blank" >10.3390/met8120977</a>

Result language

angličtina

Original language name

Kinetics of Grain Boundary Networks Controlled by Triple Junction and Grain Boundary Mobility

Original language description

The kinetics of a triple junction of grain boundarieswith distinct specific energies andmobilities and a finite mobility of the triple junction is investigated. The microstructure is approximated byndifferent 2D settings consisting of typical structural elements. First, the migration of the triple point together with the adjacent grain boundaries, is simulated, assuming that the grains are infinitely large. Secondly, by altering the boundary conditions’ growth and shrinkage, finite n-sided grains are simulated and compared to the already published analytical solution. The numerical results coincide with the corrected analytical solution. This solution can be derived either by applying the principle of maximum dissipation, or by applying the force balance at the triple junction within the framework of linear irreversible thermodynamics. The change of the area of infinite and finite grains is investigated analytically and numerically. By comparing the results of both approaches, the influence of the initial topology of the structural elements on the kinetics of grain growth can be estimated. Furthermore, the kinetics of grain growth of different idealized grain boundary networks is investigated. It is shown that square shaped grains surrounded by hexagons and dodecagons result in a more realistic grain growth scenarios than squares surrounded by octagons. A deviation from idealized grain boundary arrangements is e.g., observed, due to different triple junction mobilities, and the initially n-sided regular grain deforms in a complex manner.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20303 - Thermodynamics

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

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

Name of the periodical

Metals

ISSN

2075-4701

e-ISSN

—

Volume of the periodical

8

Issue of the periodical within the volume

12

Country of publishing house

CH - SWITZERLAND

Number of pages

19

Pages from-to

—

UT code for WoS article

000455072100001

EID of the result in the Scopus database

2-s2.0-85057555372