Effect of growth rate on the microstructure of Ni-Al-B alloys after directional solidification

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F11%3A86080866" target="_blank" >RIV/61989100:27360/11:86080866 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effect of growth rate on the microstructure of Ni-Al-B alloys after directional solidification

Popis výsledku v původním jazyce

Alloys Ni-22Al-0.24B and Ni-22Al-1B (at. %) were prepared by vacuum induction melting and then directionally re-melted in resistance furnace working on the principle of the Bridgman?s method. Final microstructures of alloys were dendritic after directional re-melting Coarse grains of the phase Ni3Al were oriented in direction of crystallisation and rows of mesh were situated between them in parallel. The mesh was composed of grains of the phase Ni3Al, which surrounded channels of (Ni) phase. Boron formed in the matrix isolated islands of eutectics. Change of the growth rate influenced the primary dendrite arm spacing according to linear equation in such a way, that the distance decrease with an increase of rate for both alloys. Increasing rate caused also changes of volume fractions of the present phases. Increases of fractions of coarse grain of the phase Ni3Al and eutectics were observed, while volume fraction of mesh decreased. This conclusion was identical for both alloys.

Název v anglickém jazyce

Effect of growth rate on the microstructure of Ni-Al-B alloys after directional solidification

Popis výsledku anglicky

Alloys Ni-22Al-0.24B and Ni-22Al-1B (at. %) were prepared by vacuum induction melting and then directionally re-melted in resistance furnace working on the principle of the Bridgman?s method. Final microstructures of alloys were dendritic after directional re-melting Coarse grains of the phase Ni3Al were oriented in direction of crystallisation and rows of mesh were situated between them in parallel. The mesh was composed of grains of the phase Ni3Al, which surrounded channels of (Ni) phase. Boron formed in the matrix isolated islands of eutectics. Change of the growth rate influenced the primary dendrite arm spacing according to linear equation in such a way, that the distance decrease with an increase of rate for both alloys. Increasing rate caused also changes of volume fractions of the present phases. Increases of fractions of coarse grain of the phase Ni3Al and eutectics were observed, while volume fraction of mesh decreased. This conclusion was identical for both alloys.

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název statě ve sborníku

20th Anniversary International Conference on Metallurgy and Materials: METAL 2011

ISBN

978-80-87294-24-6

ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

109-110

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

18. 5. 2011

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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