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Deformation of glass forming metallic liquids: Configurational changes and their relation to elastic softening

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4 Author(s)
Harmon, John S. ; Keck Engineering Laboratories, California Institute of Technology, Pasadena, California 91125 ; Demetriou, Marios D. ; Johnson, William L. ; Tao, Min

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The change in the configurational enthalpy of metallic glass forming liquids induced by mechanical deformation and its effect on elastic softening is assessed. The acoustically measured shear modulus is found to decrease with increasing configurational enthalpy by a dependence similar to one obtained by softening via thermal annealing. This establishes that elastic softening is governed by a unique functional relationship between shear modulus and configurational enthalpy.

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Applied Physics Letters  (Volume:90 ,  Issue: 13 )