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Impact of severe plastic deformation on the relaxation of glassy and supercooled liquid states of amorphous Pd40Ni40P20

A. Hassanpour, S. Hilke, H. Rösner, S. Divinski, G. Wilde

Journal of Applied Physics, 128, 155107, (2020)

DOI: 10.1063/5.0026950

Download: BibTEX

The impact of severe plastic deformation by high-pressure torsion on the relaxation of the glassy and supercooled liquid states of Pd40Ni40P20 was investigated using a combination of differential scanning calorimetry, low-temperature heat capacity, and fluctuation electron microscopy. The changes in the calorimetric signals due to deformation and subsequent heat treatments were analyzed and a correlation between deformation (rejuvenation) and annealing (relaxation) was found in relation to medium-range order (MRO). Moreover, a coupling between the occurrence of an exothermic peak in the supercooled liquid state and specific changes in the MRO types were identified. These findings are comprehended in a potential energy landscape scheme offering a new approach for MRO engineering of glasses.

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{"type":"article", "name":"a.hassanpour202010", "author":"A. Hassanpour and S. Hilke and H. Rösner and S. Divinski and G. Wilde", "title":"Impact of severe plastic deformation on the relaxation of glassy and supercooled liquid states of amorphous Pd$_40$Ni$_40$P$_20$", "journal":"Journal of Applied Physics", "volume":"128", "OPTnumber":"15", "OPTmonth":"10", "year":"2020", "OPTpages":"155107", "OPTnote":"", "OPTkey":"", "DOI":"10.1063/5.0026950"}
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