Shear Modulus Relaxation of Bulk Metallic Glass, Palladium Nickel Phosphorus, Near the Glass Temperature
Bains, Alijeet Singh
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https://hdl.handle.net/2142/80505
Description
Title
Shear Modulus Relaxation of Bulk Metallic Glass, Palladium Nickel Phosphorus, Near the Glass Temperature
Author(s)
Bains, Alijeet Singh
Issue Date
2004
Doctoral Committee Chair(s)
Andrew v. Granato
Department of Study
Physics
Discipline
Physics
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Physics, Condensed Matter
Language
eng
Abstract
A non-contact EMAT technique is used to excite and detect a shear wave resonance in bulk amorphous metallic glass Pd40Ni40P 20 during and after a small sudden change in temperature. A shear modulus relaxation is observed with enough precision to determine how its time constant, tau, changes as the relaxation progresses. The results discriminate against models of glassy relaxation commonly found in the literature and are consistent with the Interstitialcy Theory.
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