Interface stability, growth and morphology in icosahedral quasi crystals

An Pang Tsai, Ho Sou Chen, Akihisa Inoue, Tsuyoshi Masumoto

    研究成果: Article査読

    8 被引用数 (Scopus)

    抄録

    A planar growth with a growth direction parallel to a 5-fold symmetrical axis was found in a melt-quenched Al72Pd25Cr3 icosahedral alloy. An interpretation is given on the basis of a stability criterion that the plane perpendicular to the 5-fold axis is that of stable growth in an icosahedral phase (i-phase) and the solid-liquid interface instability occurs during solidification. It leads to the formation of cellular growth along the 5-fold axis and dendritic morphology. We find that decagonal phase (D-phase) grains nucleate from the i-phase and grow with the relationship that one of the 5- fold directions of the i-phase which have an angle of 63.43° between each other coincides with the 10-fold direction of the D-phase.

    本文言語English
    ページ(範囲)L1132-L1135
    ジャーナルJapanese journal of applied physics
    30
    6
    DOI
    出版ステータスPublished - 1991 6

    ASJC Scopus subject areas

    • 工学(全般)
    • 物理学および天文学(全般)

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