Atomic Ordering at Grain Boundaries in Fe-Si and Fe-Al Alloys.

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Atomic Ordering at Grain Boundaries in Fe-Si and Fe-Al Alloys.

Popis výsledku v původním jazyce

Emission Mössbauer spectroscopy was applied for investigations of the atomic ordering at grain boundaries (GBs) in the polycrystalline samples of the Fe-12, 24 at. Si and Fe-10, 22 at. Al alloys. 57Co atoms were inserted at grain boundaries of the alloysamples by diffusion annealing and source experiments were carried out. The results derived from the emission (grain boundary) spectra and standard transmission (grain interior) spectra using 57Co in Rh source were compared. Differences in the chemical composition and atomic ordering in grain interiors (GIs) and at GBs were found. In the Fe-Si alloys an increase in Si and impurity concentration at GBs is observed and it is more pronounced for the alloy with the higher Si concentration. The diffusing 57Co atoms prefer the lattice sites having iron atoms only as the nearest neighbours in the D03 superstructure. The results obtained on Fe-Al samples indicate more pronounced differences between GBs and GIs. One part of the 57Co atoms occupy

Název v anglickém jazyce

Atomic Ordering at Grain Boundaries in Fe-Si and Fe-Al Alloys.

Popis výsledku anglicky

Emission Mössbauer spectroscopy was applied for investigations of the atomic ordering at grain boundaries (GBs) in the polycrystalline samples of the Fe-12, 24 at. Si and Fe-10, 22 at. Al alloys. 57Co atoms were inserted at grain boundaries of the alloysamples by diffusion annealing and source experiments were carried out. The results derived from the emission (grain boundary) spectra and standard transmission (grain interior) spectra using 57Co in Rh source were compared. Differences in the chemical composition and atomic ordering in grain interiors (GIs) and at GBs were found. In the Fe-Si alloys an increase in Si and impurity concentration at GBs is observed and it is more pronounced for the alloy with the higher Si concentration. The diffusing 57Co atoms prefer the lattice sites having iron atoms only as the nearest neighbours in the D03 superstructure. The results obtained on Fe-Al samples indicate more pronounced differences between GBs and GIs. One part of the 57Co atoms occupy

Druh

D - Stať ve sborníku

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2001

Kód důvěrnosti údajů

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

Název statě ve sborníku

International Conference on the Application Of the Mössbauer Effect ICAME2001.

ISBN

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ISSN

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e-ISSN

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Počet stran výsledku

1

Strana od-do

114

Název nakladatele

Institute of Physics

Místo vydání

Oxford

Místo konání akce

Oxford [GB]

Datum konání akce

2. 9. 2001

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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