Abstract
The effect of the addition W (0.2 at. %) on the microstructure and mechanical properties for high-Nb TiAl alloy was studied. The experimental results show that the W alloying changes the cast structure and does not change the structure after heat process of high-Nb TiAl alloy. The W alloying does not change the influence of 4 typical structures and temperature on the mechanical properties. The W alloying can increase the room temperature strength, high temperature strength, the ductile-brittle transition temperature of the high-Nb TiAl and decreases the falling rate of the strength which decrease the temperature. The W addition has a little effect on the room temperature ductility. The W addition benefits for the higher temperature application for FAM structure.
| Original language | English |
|---|---|
| Pages (from-to) | 7-13 |
| Number of pages | 7 |
| Journal | Jinshu Rechuli Xuebao/Transactions of Metal Heat Treatment |
| Volume | 22 |
| Issue number | 1 |
| State | Published - Mar 2001 |
| Externally published | Yes |
Keywords
- Mechanical properties
- Ti46Al8.5Nb0.2W alloy
- W alloying
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