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Indexed by:期刊论文

Date of Publication:2014-08-03

Journal:PHILOSOPHICAL MAGAZINE

Included Journals:SCIE、EI、Scopus

Volume:94

Issue:22

Page Number:2520-2540

ISSN No.:1478-6435

Key Words:ideal metallic glasses; cluster formula; cluster-plus-glue-atom model; valence electron concentration; cluster-resonance model

Abstract:It is known that ideal metallic glasses fully complying with the Hume-Rothery stabilization mechanism can be expressed by a universal cluster formula of the form [cluster](glue atom)(1 or 3). In the present work, it is shown, after a re-examination of the cluster-resonance model, that the number of electrons per unit cluster formula, e/u, is universally 24. The cluster formulas are then the atomic as well as the electronic structural units, mimicking the 'molecular' formulas for chemical substances. The origin of different electron number per atom ratios e/a is related to the total number of atoms Z in unit cluster formula, e/a = 24/Z. The 24 electron formulas are well confirmed in typical binary and ternary bulk metallic glasses.