Abstract
The hot deformation behaviors of Ti-Al-Zr-Sn-Mo-Si-Y alloy in the temperature range of 800-1100°C and the strain rate range of 0.001 s-1 to 10 s-1 have been studied by using hot compressing testing on Gleeble-1500 stimulator. A processing map is developed on the basis of these data by using the principles of dynamic material modeling. The map exhibits that the deformation at 875-925°C and 0.001-0.002 s-1 is the peak efficiency of power dissipation of 85%. Optical microscope observations show that they represent two dynamic recrystallization domains: one at the temperature of 900-1000°C and the strain rate of 0.1 s-1 to 3 s-1, the other at the temperature of 850-950°C and the strain rate of 0.001 s-1 to 0.01 s-1 and the corresponding efficiency of power dissipation is about 40%-55%. The flow instability regimes appear at two different regimes: at the temperature of 800-925°C and the strain rate of 0.03 s-1 to 10 s-1, as well as at the temperature of 860-930°C and the strain rate of 0.003-0.03 s-1.
| Original language | English |
|---|---|
| Pages (from-to) | 1891-1895 |
| Number of pages | 5 |
| Journal | Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering |
| Volume | 36 |
| Issue number | 11 |
| State | Published - Nov 2007 |
Keywords
- Dynamic recrystallization
- Hot plastic deformation
- Processing map
- Titanium alloy