Deformation-induced α2 → γ phase transformation in TiAl alloys

C. L. Chen, W. Lu, Dai Sun, L. L. He, H. Q. Ye

    Research output: Contribution to journalArticlepeer-review

    19 Citations (Scopus)

    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 languageEnglish
    Pages (from-to)1029-1034
    Number of pages6
    JournalMaterials Characterization
    Volume61
    Issue number11
    DOIs
    Publication statusPublished - 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

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