Publication detail
Influence of melting temperature and time on the oxygen content in TiAlNb alloys
BARTÁK, T. ZEMČÍK, L. DLOUHÝ, A.
Czech title
Vliv tavicí teploty a času na obsah kyslíku ve slitinách TiAlNb
English title
Influence of melting temperature and time on the oxygen content in TiAlNb alloys
Type
conference paper
Language
en
Original abstract
The present study investigates a cost-effective melting of TiAlNb intermetallics in a stable yttrium oxide refractory. Experiments were performed using two Ti46Al7Nb alloys with a different initial content of oxygen. The experiments involved three different temperatures in combination with melting times spanning from 300 to 1800 s. Results of the chemical analysis provided clear evidence that the stability of the refractory wall in contact with the molten alloy and its rate of dissolution depend mainly on melting temperature. These results are further supported by microstructural observations that confirmed ever growing content of ceramic phases in the solidified intermetallic with increasing temperature of the melt.
Czech abstract
Studie je zaměřena na tavení slitin TiAlNb v kelímcích z oxidu ytritého. Experimenty byly prováděny s použitím dvou typů intermetalických slitin TiAlNb s rozdílným základním obsahem kyslíku. Experimenty byly prováděny při třech různých teplotách s dobami výdrže od 300 do 1800s. Výsledky ukazují, že stabilita keramické stěny závisí především na tavící teplotě. Tyto závěry jsou potvrzeny výsledky mikrostrukturních analýz, které prokázaly že s rostoucí teplotou taveniny roste obsah keramické fáze ve výsledných ingotech.
English abstract
The present study investigates a cost-effective melting of TiAlNb intermetallics in a stable yttrium oxide refractory. Experiments were performed using two Ti46Al7Nb alloys with a different initial content of oxygen. The experiments involved three different temperatures in combination with melting times spanning from 300 to 1800 s. Results of the chemical analysis provided clear evidence that the stability of the refractory wall in contact with the molten alloy and its rate of dissolution depend mainly on melting temperature. These results are further supported by microstructural observations that confirmed ever growing content of ceramic phases in the solidified intermetallic with increasing temperature of the melt.
Keywords in Czech
Slitiny TiAlNb, kelímek z oxidu ytria
Keywords in English
TiAlNb alloys, yttria crucible
RIV year
2011
Released
18.05.2011
Publisher
Tanger spol. s r.o.
Location
Ostrava
ISBN
978-80-87294-22-2
ISSN
NEUVEDENO
Book
Metal 2011
Pages from–to
1–5
Pages count
5
BIBTEX
@inproceedings{BUT73919,
author="Tomáš {Barták} and Ladislav {Zemčík} and Antonín {Dlouhý},
title="Influence of melting temperature and time on the oxygen content in TiAlNb alloys",
booktitle="Metal 2011",
year="2011",
month="May",
pages="1--5",
publisher="Tanger spol. s r.o.",
address="Ostrava",
isbn="978-80-87294-22-2",
issn="NEUVEDENO"
}