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Internal friction and shear modulus of certain metallic glasses
Journal article   Peer reviewed

Internal friction and shear modulus of certain metallic glasses

S Tyagi and A.E Lord
Journal of non-crystalline solids, v 30(3)
1979
DOI: https://doi.org/10.1016/0022-3093(79)90166-2

Abstract

We have measured the temperature dependence of the internal friction and shear modulus of metallic glass alloys Fe 40Ni 40P 14B 6, Fe 29Ni 49P 14B 6Si 2, Fe 80B 20 and Fe 78Mo 2B 20 in the glassy and crystalline phases using a torsional pendulum technique. The internal friction in the glassy phase remains approximately constant from room temperature to a temperature which depends on the annealing treatment, and the rises exponentially with temperature. The internal friction measurements were made at two different frequencies (∼0.2 Hz and ∼1.0 Hz) and the activation energies for the relaxation processes estimated by the frequency shift method. The shear modulus increases by about 30% when the amorphous alloys are crystallized. The amorphous alloys Fe 80B 20 and Fe 78Mo 2B 20 exhibit Invar type behaviour which disappears upon crystallization.

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20 citations in Web of Science
22 citations in Scopus

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