Properties of TiNb based shape memory alloys prepared by plasma melting

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F10%3A86075621" target="_blank" >RIV/61989100:27360/10:86075621 - 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
Properties of TiNb based shape memory alloys prepared by plasma melting
Original language description
The experimental alloys with two nominal compositions Ti22Nb and Ti25Nb (at.%) were prepared by plasma melting. Different conditions of heat treatment were performed and consisted of homogenisation annealing at 1100°C for 12 hours in flowing Ar gas and water quenching and solution annealing at 900°C for 1 hour in flowing Ar gas and water quenching followed by precipitation aging at different temperatures (200, 400 and 600°C) for 1 hour. The microstructure of Ti22Nb and Ti25Nb samples after plasma melting was dendritic with very fine martensite needles. After solid solution annealing of plasma melted alloys, the presence of ? phase and martensite in the microstructure was observed. The microhardness values showed obvious relation with heat treatment andaging. The higher Nb content in Ti25Nb alloy decreased microhardness of the samples in plasma melted as well as annealed conditions by reason of increasing amount of ? phase.
Czech name
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Czech description
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Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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