Detail publikačního výsledku

Entropy-Driven Grain Boundary Segregation: Prediction of the Phenomenon

LEJČEK, P.; HOFMANN, S.

Original Title

Entropy-Driven Grain Boundary Segregation: Prediction of the Phenomenon

English Title

Entropy-Driven Grain Boundary Segregation: Prediction of the Phenomenon

Type

WoS Article

Original Abstract

The question is formulated as to whether entropy-driven grain boundary segregation can exist. Such a phenomenon would be based on the assumption that a solute can segregate at the grain boundary sites that exhibit positive segregation energy (enthalpy) if the product of segregation entropy and temperature is larger than this energy (enthalpy). The possibility of entropy-driven grain boundary segregation is discussed for several model examples in iron-based systems, which can serve as indirect evidence of the phenomenon. It is shown that entropy-driven grain boundary segregation would be a further step beyond the recently proposed entropy-dominated grain boundary segregation as it represents solute segregation at "anti-segregation" sites.

English abstract

The question is formulated as to whether entropy-driven grain boundary segregation can exist. Such a phenomenon would be based on the assumption that a solute can segregate at the grain boundary sites that exhibit positive segregation energy (enthalpy) if the product of segregation entropy and temperature is larger than this energy (enthalpy). The possibility of entropy-driven grain boundary segregation is discussed for several model examples in iron-based systems, which can serve as indirect evidence of the phenomenon. It is shown that entropy-driven grain boundary segregation would be a further step beyond the recently proposed entropy-dominated grain boundary segregation as it represents solute segregation at "anti-segregation" sites.

Keywords

embrittlement; grain boundaries; metals and alloys; segregation

Key words in English

embrittlement; grain boundaries; metals and alloys; segregation

Authors

LEJČEK, P.; HOFMANN, S.

RIV year

2022

Released

01.08.2021

Publisher

MDPI

Location

BASEL

ISBN

2075-4701

Periodical

Metals

Volume

11

Number

8

State

Swiss Confederation

Pages from

1

Pages to

10

Pages count

10

URL

https://www.mdpi.com/2075-4701/11/8/1331

Full text in the Digital Library

http://hdl.handle.net/11012/203048

BibTex

@article{BUT174896,
  author="Pavel {Lejček} and Siegfried {Hofmann}",
  title="Entropy-Driven Grain Boundary Segregation: Prediction of the Phenomenon",
  journal="Metals",
  year="2021",
  volume="11",
  number="8",
  pages="1--10",
  doi="10.3390/met11081331",
  issn="2075-4701",
  url="https://www.mdpi.com/2075-4701/11/8/1331"
}

Documents

metals-11-01331-v2