| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Low-cost Titanium: 'Affordable Ti'
|
| Presentation Title |
High Strength and Ductility Titanium Materials with Cheap Alloying Elements Fabricated by Powder Metallurgy |
| Author(s) |
Katsuyoshi Kondoh, Takayuki Tanaka, Shota Kariya, Junko Umeda |
| On-Site Speaker (Planned) |
Katsuyoshi Kondoh |
| Abstract Scope |
Fe element, one of very cheap β-phase stabilizers, was employed to fabricate powder metallurgy (PM) Ti alloys. Our previous study indicated PM Ti-6wt.%Fe extruded alloy with α and β phases showed 0.2% yield stress (YS) of over 1050MPa and more than 20% elongation at room temperature, which were superior to the commercial Ti-6%Al-4%V alloy. On the other hand, we have already clarified oxygen atoms, one of cheap α-phase stabilizers, was effective to improve the mechanical properties of PM Ti materials due to their solid-solution strengthening effect. In this study, the effect of extrusion conditions on the microstructures formation and mechanical properties of PM Ti-Fe-O alloys was discussed. When the extrusion temperature (Te) was in the temperature range of α+β phases, the extruded Ti-Fe-O alloy showed the equiaxed fine grains (a mean grain size of 2 µm), and revealed 1050 MPa YS and excellent elongation of 30%. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |