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Ultrasonic properties of glassy alloys in terms of complex wave elasticity
Author(s) -
Fukuhara Mikio,
Zhang Wei,
Inoue Akihisa
Publication year - 2007
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200723103
Subject(s) - materials science , elasticity (physics) , anisotropy , viscoelasticity , shear modulus , shear (geology) , elastic modulus , composite material , amorphous metal , ultrasonic sensor , condensed matter physics , alloy , optics , physics , acoustics
Using ultrasonics, acoustic characteristics of Pd 40 Cu 30 P 20 , Zr 55 Cu 30 Al 10 N i5 , Zr 65 Pd 12.5 Ni 10 Al 7.5 Cu 5 , Cu 55 Zr 30 Ti 10 Pd 5 , Cu 45 Zr 20 Hf 25 Ag 10 and Ti 41.5 Cu 42.5 Ni 7.5 Hf 5 Zr 2.5 Sn 1 glassy alloys were examined in terms of complex elasticity. The order of bulk modulus ( K ), Lamé parameter ( λ ), Young ( E ) and shear ( G ) moduli of the glassy alloys shows the monopolistical character of the glassy alloys, except for polymers and rubbers. Poison's ratio correlates well to the anisotropy factor and the ratio G / K , accompanied by dilational and shear attenuation coefficients, showing characteristic one‐dimensional elastic deformability of the glassy alloys. The complex elasticity shows that the viscoelasticity of the glassy alloys is predominated by volumetric motion, associated with the complex waves. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)