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Reconstructing the Thermal Properties Based on Structural Relaxation Dynamics

SSRN, ISSN: 1556-5068
2023
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Article Description

This letter presents theoretical calculations that reproduce the thermodynamic properties of amorphous alloys. Firstly, the evolution of heat flow with temperature DSC is explored using differential scanning calorimetry. Secondly, the relationship between temperature and modulus is studied through dynamic mechanical analysis. The results demonstrate that the DSC curve exhibits one endothermic peak and two exothermic peaks, which correspond to the increase or decrease of modulus with temperature. The changes in thermal properties of amorphous alloys are closely linked to variations in defect concentration. Using the quasi-point defect theory, the parameter is employed to quantify the defect concentration, which serves as a basis for reproducing the features observed in the DSC curve through a series of theoretical calculations. This study investigates the impact of structural relaxation and glass transition on thermal and mechanical properties of metallic glasses.

Bibliographic Details

Liu Gangwei; Song Pu; Yang Lei; Xiao Chuan

Elsevier BV

Multidisciplinary; metallic glass; thermal properties; modulus; structural relaxation; defect concentration

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