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

Result code in 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>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Effect of growth rate on the microstructure of Ni-Al-B alloys after directional solidification
Original language description
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.
Czech name
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Czech description
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Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
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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Number of pages
2
Pages from-to
109-110
Publisher name
Tanger
Place of publication
Ostrava
Event location
Brno
Event date
May 18, 2011
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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