Thermal elasticity in glassy alloys based on topology of metallic clusters

Mikio Fukuhara, Xinming Wang, Akihisa Inoue

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number171908
JournalApplied Physics Letters
Volume91
Issue number17
DOIs
Publication statusPublished - 2007 Nov 1

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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