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Medientyp:
E-Artikel
Titel:
Development Status, Applications and Perspectives of Advanced Intermetallic Titanium Aluminides
Beteiligte:
Clemens, Helmut;
Mayer, Svea
Erschienen:
Trans Tech Publications, Ltd., 2014
Erschienen in:
Materials Science Forum, 783-786 (2014), Seite 15-20
Sprache:
Nicht zu entscheiden
DOI:
10.4028/www.scientific.net/msf.783-786.15
ISSN:
1662-9752
Entstehung:
Anmerkungen:
Beschreibung:
After almost three decades of intensive fundamental research and development activities, intermetallic titanium aluminides based on the ordered γ-TiAl phase have found applications in aircraft and automotive engine industry. The advantages of this class of innovative high-temperature materials are their low density and their good strength and creep properties up to 750°C as well as their good oxidation and burn resistance. Advanced TiAl alloys are complex multi-phase alloys which can be processed by ingot or powder metallurgy as well as precision casting methods. Each process leads to specific microstructures which can be altered and optimized by thermo-mechanical processing and/or subsequent heat treatments. The background of these heat treatments is at least twofold, i.e. concurrent increase of ductility at room temperature and creep strength at elevated temperature.