Abstract
Effects of one-step aging, two-step aging of low-temperature and high-temperature and heating rate of aging on the microstructure and mechanical properties of Ti-10V-2Fe-3Al titanium alloy after high temperature deformation were studied. The results show that comparing with one-step aging, in the two-step aging the early precipitated ω particles provided uniform nucleation sites for α phase during the low-temperature aging. As a result, the two-step aging sequences led to much finer and more uniform α+β microstructure to obtain good match of strength and ductility. For a slow heating rate of 0.1°C/s to the peak aging temperature, a very finely dispersed isothermal ω-phase had enough time to precipitate, and thus provided nucleation sites of high density for the α-phase, resulting in the very fine α plates; therefore, the same match effect of strength and ductility was obtained.
| Original language | English |
|---|---|
| Pages (from-to) | 1061-1065 |
| Number of pages | 5 |
| Journal | Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering |
| Volume | 39 |
| Issue number | 6 |
| State | Published - Jun 2010 |
| Externally published | Yes |
Keywords
- Aging processing
- Mechanical properties
- Microstructure
- Titanium alloy