Advancing the mechanical performance of glasses: perspectives and challenges

L Wondraczek, E Bouchbinder, A Ehrlicher… - Advanced …, 2022 - Wiley Online Library
Glasses are materials that lack a crystalline microstructure and long‐range atomic order.
Instead, they feature heterogeneity and disorder on superstructural scales, which have …

Achieving strength-ductility synergy in metallic glasses via electric current-enhanced structural fluctuations

H Ding, P Gong, W Chen, Z Peng, H Bu… - International Journal of …, 2023 - Elsevier
Structural applications of metallic glasses are limited by their room-temperature brittleness
and strain-softening, associated with the extreme localization of plastic flow in shear bands …

Strain-hardening and suppression of shear-banding in rejuvenated bulk metallic glass

J Pan, YP Ivanov, WH Zhou, Y Li, AL Greer - Nature, 2020 - nature.com
Strain-hardening (the increase of flow stress with plastic strain) is the most important
phenomenon in the mechanical behaviour of engineering alloys because it ensures that …

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 …

Low-frequency vibrational modes of stable glasses

L Wang, A Ninarello, P Guan, L Berthier… - Nature …, 2019 - nature.com
Unusual features of the vibrational density of states D (ω) of glasses allow one to rationalize
their peculiar low-temperature properties. Simulational studies of D (ω) have been restricted …

Low-energy quasilocalized excitations in structural glasses

E Lerner, E Bouchbinder - The Journal of chemical physics, 2021 - pubs.aip.org
Glassy solids exhibit a wide variety of generic thermomechanical properties, ranging from
universal anomalous specific heat at cryogenic temperatures to nonlinear plastic yielding …

The effect of thermal cycling on the fracture toughness of metallic glasses

J Ketkaew, R Yamada, H Wang, D Kuldinow… - Acta Materialia, 2020 - Elsevier
A wide range of behaviors, including non-monotonic rejuvenation and relaxation, and the
ability to qualitatively change the effect by varying the structural state of the glass was …

Pinching a glass reveals key properties of its soft spots

C Rainone, E Bouchbinder… - Proceedings of the …, 2020 - National Acad Sciences
It is now well established that glasses feature quasilocalized nonphononic excitations—
coined “soft spots”—, which follow a universal ω 4 density of states in the limit of low …

Glass stability changes the nature of yielding under oscillatory shear

WT Yeh, M Ozawa, K Miyazaki, T Kawasaki, L Berthier - Physical review letters, 2020 - APS
We perform molecular dynamics simulations to investigate the effect of a glass preparation
on its yielding transition under oscillatory shear. We use swap Monte Carlo to investigate a …

Metastability in high entropy alloys

SA Kube, J Schroers - Scripta Materialia, 2020 - Elsevier
The high entropy effect is often insufficient to fully stabilize single-phase solid solutions
(SPSS), yielding only few, mostly metastable SPSS. While the prospective space of …