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interstitialcy theory of condensed matter states and its application to non-crystalline metallic materials

Chinese Physics B 2017年第1期26卷 20-31页

作者： V A Khonik Department of General Physics State Pedagogical University Voronezh 394043 Russia

A comprehensive review of a novel promising framework for the understanding of non-crystalline metallic materials, i.e., interstitialcy theory of condensed matter states（ITCM）, is presented. The background of the ITCM and its basic results for equilibrium/supercooled liquids and glasses are given. It is emphasized that the ITCM provides a new consistent, clear, and testable approach, which uncovers the generic relationship between the properties of the maternal crystal,equilibrium/supercooled liquid and glass obtained by melt quenching.

关键词： liquids and glasses interstitialcy theory shear modulus relaxation

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On the shear modulus and thermal effects during structural relaxation of a model metallic glass:Correlation and thermal decoupling

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Journal of Materials Science & Technology 2022年第8期103卷 144-151页

作者： Hongbo Zhou Vitaly Khonik Gerhard Wilde Institute of Materials Physics University of MuensterWilhelm-Klemm Str.10Muenster 48149Germany Department of General Physics Voronezh State Pedagogical UniversityLenin Str.86Voronezh 394043Russia

Pd_(40)Ni_(40)P_(20)(at.%)samples with different enthalpy states were fabricated through high-pressure torsion or sub-Tg annealing of the as-cast ***,the underlying structural relaxation was studied by in-situ shear modulus measurements and modulated differential scanning *** results show that high-pressure torsion leads to shear modulus softening and an increase of the nonreversible exothermic enthalpy,indicating a significant structural rejuvenation,while sub-Tg annealing causes shear modulus hardening and a decrease of the nonreversible exothermic *** reversible endothermic effect which can reflect the fractional change of supercooled liquid with temperature was found to be almost identical for all samples,and independent of deformation or thermal *** total heat flow can be well correlated with the shear modulus within the framework of interstitialcy ***,we demonstrate that the structural relaxation below Tg decouples into internal stress relaxation andβ-*** addition,this work indicates that the processes ofα-relaxation andβ-relaxation in the metallic glass are of similar structural origin but occur on different spatial scales.

关键词： Bulk metallic glass In-situ shear modulus Thermal properties Relaxation interstitialcy theory

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Thermal effects and evolution of the defect concentration based on shear modulus relaxation data in a Zr-based metallic glass

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Chinese Physics B 2020年第8期29卷 133-136页

作者： Qi Hao Ji-Chao Qiao E V Goncharova G V Afonin Min-Na Liu Yi-Ting Cheng V A Khonik School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi'an 710072China Department of General Physics Voronezh State Pedagogical UniversityLenin Street 86Voronezh 394043Russia

A relationship between thermal effects and relaxation of the high-frequency shear modulus upon heat treatment of bulk Zr48(Cu5/6Ag1/6)44Al8 metallic glass is *** relationship is attributed to the relaxation of a interstitial-type defect system frozen-in from the melt upon glass *** data show that thermal effects occurring on heating include heat release below the glass transition temperature,heat absorption above it and heat release caused by *** equation derived within the interstitialcy theory can be used to calculate the shear modulus relaxation using the calorimetric *** obtained results are used to trace the defect concentration as functions of temperature and thermal prehistory.

关键词： shear modulus metallic glass structural relaxation interstitialcy theory

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