Abstract
Microstructure and mechanical properties of Ti-1300 alloy were investigated after the solution treatment or the solution treatment followed by subsequent aging. The results show that the heat treatment process has a significant effect on the microstructure and mechanical properties of Ti-1300 alloy. The ultimate tensile strength and yield strength decrease with the increasing of solution temperature, but the elongation of Ti-1300 alloy presents an opposite changing tendency. Nevertheless, the reduction of area of Ti-1300 alloy firstly increases and then decreases. Ti-1300 alloy was solution treated at 850℃ to obtain the best combination of strength and ductility. It is found that the micro-hardness of Ti-1300 alloy increases with increasing of solution temperature under the same aging condition. Compared with solution treatment below the β transus temperature of Ti-1300 alloy, the second phase αs precipitates are finer and more uniform because of the incremental concentration of excess vacancy in the solution process above β transus temperature of Ti-1300 alloy.
| Original language | English |
|---|---|
| Pages (from-to) | 1209-1213 |
| Number of pages | 5 |
| Journal | Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering |
| Volume | 44 |
| Issue number | 5 |
| State | Published - 1 May 2015 |
Keywords
- Mechanical properties
- Microstructure
- Solution temperature
- Ti-1300 alloy