The study of Sn effect on recrystallization of hot rolled Ti-Nb-Ta-Sn biomedical alloy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60193247%3A_____%2F14%3AUJP1641C" target="_blank" >RIV/60193247:_____/14:UJP1641C - isvavai.cz</a>

Výsledek na webu

<a href="http://microscopy.cz/proceedings.html" target="_blank" >http://microscopy.cz/proceedings.html</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The study of Sn effect on recrystallization of hot rolled Ti-Nb-Ta-Sn biomedical alloy

Popis výsledku v původním jazyce

"Beta-titanium alloys are used as materials for bio-application. Their properties suitable for this purpose are low Young’s modulus, high strength, good corrosion resistance etc. These properties are attached with microstructure (phase composition, grain size etc.). These alloy exhibit very coarse grains in as-cast state. Therefore hot rolling (or hot forging) is desirable process step in order to obtain fine grained microstructure with desired mechanical properties. Fine grained microstructure is also suitable for subsequent cold deformation that may result in further improvement of mechanical properties. In this work hot rolling of-as-cast beta titanium alloys (type TiNbTaSn) was performed at temperatures between 900 and 1080°C in several steps. The total section reduction was about 50%. Subsequently rolled rods were solution treated at 850°C/0.5h/water quenched. The effect of Sn addition (6, 8 and 10 wt.% - marked 6Sn, 8Sn and 10Sn) has been studied by using light microscopy (LM) and electron microscopy (electron back scatter diffraction – EBSD). The microstructure of hot rolled specimens consists mainly of very coarse and elongated grains of β-Ti (bcc) phase. Recrystallization was observed in solution treated 6Sn and 8Sn specimens. In 6Sn specimen areas consisting of α”-martensitic phase are present. This signs that MS (martensite start) temperature is lowered below room temperature by Sn addition. In 10 Sn specimen both recrystallized and deformed grains has been observed. The recrystallization took place in this specimen only in highly deformed regions during solution treatment, so the Sn hinders recrystallization in this type of alloys."

Název v anglickém jazyce

The study of Sn effect on recrystallization of hot rolled Ti-Nb-Ta-Sn biomedical alloy

Popis výsledku anglicky

"Beta-titanium alloys are used as materials for bio-application. Their properties suitable for this purpose are low Young’s modulus, high strength, good corrosion resistance etc. These properties are attached with microstructure (phase composition, grain size etc.). These alloy exhibit very coarse grains in as-cast state. Therefore hot rolling (or hot forging) is desirable process step in order to obtain fine grained microstructure with desired mechanical properties. Fine grained microstructure is also suitable for subsequent cold deformation that may result in further improvement of mechanical properties. In this work hot rolling of-as-cast beta titanium alloys (type TiNbTaSn) was performed at temperatures between 900 and 1080°C in several steps. The total section reduction was about 50%. Subsequently rolled rods were solution treated at 850°C/0.5h/water quenched. The effect of Sn addition (6, 8 and 10 wt.% - marked 6Sn, 8Sn and 10Sn) has been studied by using light microscopy (LM) and electron microscopy (electron back scatter diffraction – EBSD). The microstructure of hot rolled specimens consists mainly of very coarse and elongated grains of β-Ti (bcc) phase. Recrystallization was observed in solution treated 6Sn and 8Sn specimens. In 6Sn specimen areas consisting of α”-martensitic phase are present. This signs that MS (martensite start) temperature is lowered below room temperature by Sn addition. In 10 Sn specimen both recrystallized and deformed grains has been observed. The recrystallization took place in this specimen only in highly deformed regions during solution treatment, so the Sn hinders recrystallization in this type of alloys."

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/TE01020390" target="_blank" >TE01020390: Centrum vývoje moderních kovových biomateriálů pro lékařské implantáty</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

18TH INTERNATIONAL MICROSCOPY CONGRESS PROCEEDINGS

ISBN

978-80-260-6720-7

ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

-1

Název nakladatele

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Místo vydání

Prague, Czech Republic

Místo konání akce

Prague, CZECH REPUBLIC

Datum konání akce

7. 9. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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