Microstructure of Ni-22Al-1Zr and Ni-22Al-2Zr alloys after directional solidification

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F11%3A86080865" target="_blank" >RIV/61989100:27360/11:86080865 - 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
Microstructure of Ni-22Al-1Zr and Ni-22Al-2Zr alloys after directional solidification
Original language description
Ni-22Al-1Zr and Ni-22Al-2Zr alloys (at. %) were prepared by vacuum induction melting. The alloys were directionally re-melted in a resistance furnace working with use of the Bridgman?s method. The re-melted samples were transversally and longitudinally cut and microstructure, porosity and microhardness were investigated on the sections. The structure of both alloys was oriented after directional solidification. It consisted of coarse grains of Ni3Al phase, in which the eutectic was distributed. The eutectic was a complex of lamellas of Ni3Al and Ni7Zr2 phases. Porosity of re-melted samples was smaller than porosity of castings. Furthermore, porosity of samples increased with rate of directional solidification. There was no significant difference between the values of microhardness for transversal and longitudinal sections of both alloys. Their average values were approximately 270 HV 0.05. That has confirmed that the largest microhardness had the eutectic with zirconium.
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
18th International Student's Day of Metallurgy : proceedings
ISBN
978-3-200-02155-6
ISSN
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e-ISSN
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Number of pages
5
Pages from-to
265-269
Publisher name
ASMET, Austrian Society for Metallurgy and Materials
Place of publication
Knittelfeld,
Event location
Leoben
Event date
Mar 17, 2011
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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