[SS] S6 Materials Science of Additive Manufacturing IX

1:40 PM - 2:00 PM JST(4:40 AM - 5:00 AM UTC)

[S6.22] Stability of Mechanical Properties and Creep Behavior of β-containing TiAl Alloys Fabricated by Electron Beam Additive Manufacturing

○Takahito Karashima¹, Ken Cho¹, Masao Takeyama², Takayoshi Nakano¹, Hiroyuki Yasuda¹ (1. UOsaka, 2. Inst. of Sci. Tokyo)

Keywords:

TiAl,Creep,Electron Beam-Powder Bed Fusion,Mechanical Properties,Turbine Blade

The mechanical stability and creep properties of an EB-PBF-fabricated β-containing TiAl alloy were investigated. The alloy maintained high strength after high-temperature exposure and exhibited superior creep properties compared with a conventional TiAl alloy. Furthermore, β/γ interface was identified as the primary cause of creep fracture.