Abstract
11-40 alloy is a single β phase burn resistant titanium alloy. Its high temperature deformation mechanism and stress-strain (σ-ε) curves were studied by Gleeble-1500 thermal-simulator. The results suggest that there are a bit abrupt flow stress drops followed by steady state in Tï-40 alloy as-annealing. The magnitude of the flow stress drop increases with strain rate and decreases with temperature. Its deformation activation energies are 174 kJ/mol for 650-850°C and 276.7 kJ/mol for 950-1000°C, which are close to or bigger than the values for self and solute lattice diffusion in pure β titanium, there-by, the deformation mechanism at temperature range is controlled by lattice diffusion for 650-850°C, or mainly controlled by dynamic reciystallization for 950-1000°C.
| Original language | English |
|---|---|
| Pages (from-to) | 206-208 |
| Number of pages | 3 |
| Journal | Rare Metals |
| Volume | 18 |
| Issue number | 3 |
| State | Published - 1999 |
| Externally published | Yes |
Keywords
- Burn resistant titanium alloy
- Deformation mechanism
- Ti-40 alloy