Abstract
We have investigated the effects of solute oxygen on the kinetics of diffusionless isothermal omega (DI-ω) transformation in β-titanium vanadium alloys. This transformation constitutes a third category of ω transformation beside the athermal and isothermal modes. Thermal analysis, hardness and internal friction measurements were conducted after quenching oxygen-containing and near-oxygen-free alloys with ~ 21 at%V from the β-stable temperature. At this level of vanadium concentration, the athermal ω transformation is not expected. It is found that the DI-ω transformation more rapidly progresses in the low oxygen alloy and the relaxation strength of the elementary process of {111}β collapse is significantly reduced.
Original language | English |
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Pages (from-to) | 88-91 |
Number of pages | 4 |
Journal | Scripta materialia |
Volume | 188 |
Early online date | 21 Jul 2020 |
DOIs | |
Publication status | Published - Nov 2020 |
Keywords
- Differential scanning calorimetry (DSC)
- Hardness
- Internal friction
- Titanium alloys
- Aging
- 22/2 OA procedure