About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
A new high-temperature titanium alloy for directed energy deposition. |
| Author(s) |
Thomas Klein, Jose L Neves, David Obersteiner, Michael Musi, Ehsan Farabi, Michael Lasisi, Sophie Primig |
| On-Site Speaker (Planned) |
Thomas Klein |
| Abstract Scope |
High-temperature titanium alloys have become of central importance in applications such as aeroengines requiring lightweight, high strength/modulus, oxidation resistant structures. Existing alloys have, however, been developed for established manufacturing routes involving hot working and subsequent heat treatments. Additive manufacturing (AM) paves the way toward more sustainable use of materials combining reduced energy consumption with resource-efficiency in critical raw materials. Due to the unique conditions encountered during AM, new materials are required, since existing alloys form coarse/columnar grains prone to premature failure and anisotropy. This study aims at the development of a new alloy providing at least equivalent properties to Ti-6Al-2Sn-4Zr-2Mo. Systematic alloy screening was conducted to narrow down the alloy space. Subsequently, a set of alloys underwent detailed material characterization (microstructure/mechanical). This presentation will outline the alloy development methodology alongside detailed characterization results and will suggest a novel titanium alloy for high-temperature applications and good additive manufacture-ability. |