Thermal elasticity in glassy alloys based on topology of metallic clusters

Mikio Fukuhara, Xinming Wang, Akihisa Inoue

研究成果: Article査読

8 被引用数 (Scopus)

抄録

Thermal elasticity of two kinds of bonding-type glassy alloys, Zr55 Cu30 Al10 Ni5 and Pd40 Cu30 Ni10 P20, during progressive devitrification was evaluated by Poisson's ratio, Debye temperature, and internal frictions in terms of topological change in metallic clusters. Both alloys showed opposite behavior for thermal elasticity: thermal softening associated with relaxation of icosahedral clusters and thermal-induced entropy elasticity associated with the rotational and vibrational motions of polyhedral clusters, and an increment of internal friction based on electron-longitudinal phonon interaction derived from the variation amount of potential energy among atoms, showing vanishment of free electrons.

本文言語English
論文番号171908
ジャーナルApplied Physics Letters
91
17
DOI
出版ステータスPublished - 2007

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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