Change in microstructure during aging at 1273k inti-40at. %alalloy

Makoto Tanimura, Yasuhide Inoue, Yasumasa Koyama, Makoto Kikuchi

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    Features of the →a2+y precipitation reaction in a Ti-40at. %Al alloy were investigated by transmission electron microscopy. In an as-quenched sample without aging, the a phase with the hep structure already transforms into the a 2 phase with the D019 one as a matrix and a phase with the B19 one as an intermediate precipitate. When the sample is aged at 1273K, amorphous regions are nucleated at the B19 intermediate precipitates and grow in the matrix. On further aging, the amorphous region is converted to a lenticular-shape precipitate with the L10 structure of the γ phase. The α 2/γ lamellar structure is eventually produced by the lateral growth of the lenticular-shape precipitates.

    Original languageEnglish
    Pages (from-to)1190-1196
    Number of pages7
    Journalmaterials transactions, jim
    Volume37
    Issue number5
    Publication statusPublished - 1996

    Fingerprint

    Precipitates
    precipitates
    Aging of materials
    microstructure
    Microstructure
    Lamellar structures
    matrices
    Transmission electron microscopy
    transmission electron microscopy

    Keywords

    • Amorphous state
    • Ordered structure
    • Precipitation reaction
    • Transmission electron microscopy

    ASJC Scopus subject areas

    • Engineering(all)

    Cite this

    Change in microstructure during aging at 1273k inti-40at. %alalloy. / Tanimura, Makoto; Inoue, Yasuhide; Koyama, Yasumasa; Kikuchi, Makoto.

    In: materials transactions, jim, Vol. 37, No. 5, 1996, p. 1190-1196.

    Research output: Contribution to journalArticle

    Tanimura, M, Inoue, Y, Koyama, Y & Kikuchi, M 1996, 'Change in microstructure during aging at 1273k inti-40at. %alalloy', materials transactions, jim, vol. 37, no. 5, pp. 1190-1196.
    Tanimura, Makoto ; Inoue, Yasuhide ; Koyama, Yasumasa ; Kikuchi, Makoto. / Change in microstructure during aging at 1273k inti-40at. %alalloy. In: materials transactions, jim. 1996 ; Vol. 37, No. 5. pp. 1190-1196.
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