Beyond the average: spatial and temporal fluctuations in oxide glass-forming systems

KA Kirchner, DR Cassar, ED Zanotto, M Ono… - Chemical …, 2022 - ACS Publications
Atomic structure dictates the performance of all materials systems; the characteristic of
disordered materials is the significance of spatial and temporal fluctuations on composition …

[HTML][HTML] Mechancial properties of amorphous alloys: In the framework of the microstructure heterogeneity

Q Jichao, Z Langting, T Yu, LYU Guojian, HAO Qi… - 力学进展, 2022 - lxjz.cstam.org.cn
The intrinsic structural heterogeneities of amorphous alloys are closely related to the
thermodynamics and dynamical behavior, such as relaxation/crystallization, glass transition …

Effects of structure relaxation and surface oxidation on nanoscopic wear behaviors of metallic glass

Q Jia, W He, D Hua, Q Zhou, Y Du, Y Ren, Z Lu… - Acta Materialia, 2022 - Elsevier
Both structure relaxation and oxidation of surface layer induced by thermal treatment or
friction heat play significant roles in reducing wear of metallic glasses (MGs). To distinguish …

Revealing the structural heterogeneity of metallic glass: mechanical spectroscopy and nanoindentation experiments

K Tao, JC Qiao, QF He, KK Song, Y Yang - International Journal of …, 2021 - Elsevier
Microstructural heterogeneity is an important issue in understanding the mechanical and
physical properties of metallic glasses (MGs). Theoretically, physical aging below the glass …

Achieving structural rejuvenation in metallic glass by modulating β relaxation intensity via easy-to-operate mechanical cycling

LT Zhang, YJ Wang, E Pineda, Y Yang… - International Journal of …, 2022 - Elsevier
Structural rejuvenation is an effective measure to optimize the mechanical properties of
metallic glasses (MGs). Sophisticated solutions to rejuvenation include thermal cycling, laser …

[HTML][HTML] 基于微观结构非均匀性的非晶合金力学行为

乔吉超, 张浪渟, 童钰, 吕国建, 郝奇, 陶凯 - 力学进展, 2022 - lxjz.cstam.org.cn
非晶合金弛豫/晶化, 玻璃转变, 塑性变形等热力学和动力学行为都与其固有的结构非均匀性密切
相关. 但是, 由于淹没在亚稳的长程无序结构中, 探究非晶合金的结构非均匀性十分困难. 尤其 …

Spatial heterogeneity as the structure feature for structure–property relationship of metallic glasses

F Zhu, S Song, KM Reddy, A Hirata, M Chen - Nature communications, 2018 - nature.com
The mechanical properties of crystalline materials can be quantitatively described by crystal
defects of solute atoms, dislocations, twins, and grain boundaries with the models of solid …

Strain-driven Kovacs-like memory effect in glasses

Y Tong, L Song, Y Gao, L Fan, F Li, Y Yang… - Nature …, 2023 - nature.com
Studying complex relaxation behaviors is of critical importance for understanding the nature
of glasses. Here we report a Kovacs-like memory effect in glasses, manifested by non …

A Hall-Petch-like relationship linking nanoscale heterogeneity to yield stress of heterogeneous metallic glasses

Y Gu, J Cappola, J Wang, L Li - International Journal of Plasticity, 2023 - Elsevier
Metallic glasses (MGs) undergo plastic deformation through shear transformation zones
(STZs) at small deformations and shear banding at large deformations. The STZ mechanism …

Fundamental links between shear transformation, β relaxation, and string-like motion in metallic glasses

ZY Zhou, Y Sun, L Gao, YJ Wang, HB Yu - Acta Materialia, 2023 - Elsevier
Plastic deformation and relaxation dynamics are two major topics in glass physics.
Secondary (β) relaxation has been assumed to be a relevant plastic mechanism in …