Publication detail
Solute Segregation at 46.8deg(111) Twist Grain Boundary of a Phosphorus Doped Fe-2.3%V Alloy
LEJČEK, P. POKLUDA, J. ŠANDERA, P. HORNÍKOVÁ, J. JENKO, M.
Czech title
Segregace fosforu na 46.8deg(111) krutových hranicích zrn slitiny Fe-2.3%V
English title
Solute Segregation at 46.8deg(111) Twist Grain Boundary of a Phosphorus Doped Fe-2.3%V Alloy
Type
journal article in Web of Science
Language
en
Original abstract
The Auger electron spectroscopy study on chemistry of the 46.8deh(111) twist grain boundary of an Fe-2.3%V alloy showed an extended phosphorus enrichment at temperatures in range of 500 degC and 800 degC. Simultaneously, slight but nearly independent segregation of vanadium was also detected. The standard enthalpy and entropy of grain boundary segregation of phosphorus and vanadium were determined according to the Guttmann model of multicomponent interfacial segregation. Obtained data clearly show that coincidence boundary is special (i.e. low energy interface). The data also fit well with the predictive model of grain boundary segregation and confirm that phosphorus segregates interstitially at the grain boundary while vanadium substitutes iron atoms in the interface structure
Czech abstract
Studie pomocí Augerovy elektronové spektroskopie o chemii 46.8deg (111) hranice zrna na slitině Fe-2,3%V ukázaly rozšířené obohacení fosforem při teplotách v rozmezí 500 a 800 degC. Současně byly rovněž zjištěny slabé, ale téměř nezávislé segregace vanadu. Standardní entalpie a entropie segregace na hranicích zrn fosforu a vanadu byly stanoveny v závislosti na Guttmannobě modelu vícesložkových meziplošných segregací. Získaná data jasně ukazují, že hranice sigma=19 je speciální (tj. nízkoenergetické rozhraní). Tyto údaje také dobře souhlasí s prediktivním modelem segregace na hranicích zrn a potvrzují, že fosfor segreguje intersticiálně na hranice zrna , zatímco substituční atomy vanadu v železe ve struktuře.
English abstract
The Auger electron spectroscopy study on chemistry of the 46.8deh(111) twist grain boundary of an Fe-2.3%V alloy showed an extended phosphorus enrichment at temperatures in range of 500 degC and 800 degC. Simultaneously, slight but nearly independent segregation of vanadium was also detected. The standard enthalpy and entropy of grain boundary segregation of phosphorus and vanadium were determined according to the Guttmann model of multicomponent interfacial segregation. Obtained data clearly show that coincidence boundary is special (i.e. low energy interface). The data also fit well with the predictive model of grain boundary segregation and confirm that phosphorus segregates interstitially at the grain boundary while vanadium substitutes iron atoms in the interface structure
Keywords in Czech
segregace na hranicích zrn; fosfor; slitina Fe–V; krutová hranice zrna; kvantifikace AES; klasifikace hranic zrn
Keywords in English
Grain boundary segregation; Phosphorus; Fe–V alloy; Twist grain boundary; AES quantification; Grain boundary classification
RIV year
2012
Released
10.02.2012
ISSN
0039-6028
Volume
606
Number
1
Pages from–to
258–262
Pages count
5
BIBTEX
@article{BUT76133,
author="Pavel {Lejček} and Jaroslav {Pokluda} and Pavel {Šandera} and Jana {Horníková} and Monika {Jenko},
title="Solute Segregation at 46.8deg(111) Twist Grain Boundary of a Phosphorus Doped Fe-2.3%V Alloy",
year="2012",
volume="606",
number="1",
month="February",
pages="258--262",
issn="0039-6028"
}