Abstract
Deformation-induced α2 → γ phase transformation in high Nb containing TiAl alloys was investigated using high-resolution transmission electron microscopy (HREM) and energy dispersive X-ray spectroscopy (EDS). The dislocations appearing at the tip of deformation-induced γ plate (DI-γ) and the stacking sequence change of the α2 matrix were two key evidences for determining the occurrence of the deformation-induced α2 → γ phase transformation. Compositional analysis revealed that the product phase of the room-temperature transformation was not standard γ phase; on the contrary, the product phase of the high-temperature transformation was standard γ phase.
Original language | English |
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Pages (from-to) | 1029-1034 |
Number of pages | 6 |
Journal | Materials Characterization |
Volume | 61 |
Issue number | 11 |
DOIs | |
Publication status | Published - 2010 Nov |
Keywords
- EDS
- Phase transformations
- Titanium aluminides
- Transmission electron microscopy
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering