Vliv vodíku na mikrostrukturní vlastnosti Ti slitin

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F07%3A00016300" target="_blank" >RIV/61989100:27360/07:00016300 - 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 hydrogen on the microstructure features of Ti based alloys

Popis výsledku v původním jazyce

Study of hydrogen effect on microstructure and mechanical features of TiAl- and NiTi-based alloys was performed. Specimens of polycrystalline alloys were observed in following states: as-received and after heat treatments in different atmospheres. The annealing in flowing argon or hydrogen gas was realised at 750°C for 4 hours in case of Ti-46Al-1.5Mo-0.2C and Ti-44Al-8Nb alloys and at 850°C for 1 hour in case of NiTi, NiTi-Cu and NiTi-Fe alloys. Microstructure was studied using light and scanning electron microscopies. Measurements of microhardness completed the metallographic study of Ti-Al based alloys. The NiTi wires were tensile tested in air at room temperature and strain rate of 3 x 10-4 s-1 and fracture surfaces were observed using SEM. AFM topography of martensite plates in NiTi as well as of lamellar structure in TiAl studied in order to determine the hydrogen influence. The quantity of hydrogen was determined by gas desorption at 700°C in vacuum desorption apparatus.

Název v anglickém jazyce

Effect of hydrogen on the microstructure features of Ti based alloys

Popis výsledku anglicky

Study of hydrogen effect on microstructure and mechanical features of TiAl- and NiTi-based alloys was performed. Specimens of polycrystalline alloys were observed in following states: as-received and after heat treatments in different atmospheres. The annealing in flowing argon or hydrogen gas was realised at 750°C for 4 hours in case of Ti-46Al-1.5Mo-0.2C and Ti-44Al-8Nb alloys and at 850°C for 1 hour in case of NiTi, NiTi-Cu and NiTi-Fe alloys. Microstructure was studied using light and scanning electron microscopies. Measurements of microhardness completed the metallographic study of Ti-Al based alloys. The NiTi wires were tensile tested in air at room temperature and strain rate of 3 x 10-4 s-1 and fracture surfaces were observed using SEM. AFM topography of martensite plates in NiTi as well as of lamellar structure in TiAl studied in order to determine the hydrogen influence. The quantity of hydrogen was determined by gas desorption at 700°C in vacuum desorption apparatus.

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

2007

Kód důvěrnosti údajů

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

Název statě ve sborníku

METAL 2007, 16. mezinárodní konference metalurgie a materiálů

ISBN

978-80-86840-33-8

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

95-95

Název nakladatele

Tanger spol. s r.o.

Místo vydání

Ostrava

Místo konání akce

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Datum konání akce

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Typ akce podle státní příslušnosti

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Kód UT WoS článku

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