| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1622640 | Journal of Alloys and Compounds | 2009 | 5 Pages |
Abstract
The thermal stability of omega phase in TiAl alloys has been investigated using scanning and transmission electron microscopy and it has been found that Zr has a strong effect in stabilising the omega phase. In Ti–44Al–4Nb–4Zr–0.2Si–1B the omega solvus was determined as just over 900 °C. Increasing additions of Zr to Ti–44Al–4Nb–2Mo resulted in an increase in the volume fraction of omega phase at 700 °C and the omega particle distribution was changed from localised to uniformly distributed omega. In the alloy with 2 at% Zr, omega particles were found uniformly throughout the B2 matrix at 700 °C.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
H. Jiang, D. Hu, X. Wu,