Flow units as dynamic defects in metallic glassy materials

Z Wang, WH Wang - National Science Review, 2019 - academic.oup.com
In a crystalline material, structural defects such as dislocations or twins are well defined and
largely determine the mechanical and other properties of the material. For metallic glass …

Characterization of flow units in metallic glass through structural relaxations

ZG Zhu, P Wen, DP Wang, RJ Xue, DQ Zhao… - Journal of Applied …, 2013 - pubs.aip.org
We characterize the evolution of flow units associated with the flow “defects” in metallic glass
by monitoring the fictive temperature change of a typical metallic glass upon isothermal …

Evolution of hidden localized flow during glass-to-liquid transition in metallic glass

Z Wang, BA Sun, HY Bai, WH Wang - Nature Communications, 2014 - nature.com
For glasses, the structural origin of their flow phenomena, such as elastic and plastic
deformations especially the microscopic hidden flow before yield and glass-to-liquid …

On the source of plastic flow in metallic glasses: Concepts and models

WH Wang, Y Yang, TG Nieh, CT Liu - Intermetallics, 2015 - Elsevier
We briefly review the state-of-the-art study on plastic flow in metallic glasses. Especially, we
survey the features and behaviors, percolation, and response of the basic deformation units …

A hierarchically correlated flow defect model for metallic glass: Universal understanding of stress relaxation and creep

Q Hao, GJ Lyu, E Pineda, JM Pelletier, YJ Wang… - International Journal of …, 2022 - Elsevier
Due to the structurally disordered arrangement of atoms and deviation from thermodynamic
equilibrium, the physical and mechanical properties of metallic glasses can vary with time …

Structural perspectives on the elastic and mechanical properties of metallic glasses

DP Wang, ZG Zhu, RJ Xue, DW Ding, HY Bai… - Journal of Applied …, 2013 - pubs.aip.org
The flow units of glasses are generally perceived to be a local rearrangement of atoms that
are microstructural origin for plastic deformation and relaxations in metallic glasses. We find …

[HTML][HTML] Deformation behavior of metallic glasses with shear band like atomic structure: a molecular dynamics study

C Zhong, H Zhang, QP Cao, XD Wang, DX Zhang… - Scientific reports, 2016 - nature.com
Molecular dynamics simulations were employed to investigate the plastic deformation within
the shear bands in three different metallic glasses (MGs). To mimic shear bands, MG …

Signature of viscous flow units in apparent elastic regime of metallic glasses

Z Wang, P Wen, LS Huo, HY Bai, WH Wang - Applied Physics Letters, 2012 - pubs.aip.org
We characterize and identify the flow units in two typical metallic glasses (MGs), which have
markedly different β-relaxation behaviors and mechanical properties. The viscoelastic …

The elastic properties, elastic models and elastic perspectives of metallic glasses

WH Wang - Progress in Materials Science, 2012 - Elsevier
Bulk metallic glass (BMG) provides plentiful precise knowledge of fundamental parameters
of elastic moduli, which offer a benchmark reference point for understanding and …

Flow unit perspective on room temperature homogeneous plastic deformation in metallic glasses

Z Lu, W Jiao, WH Wang, HY Bai - Physical review letters, 2014 - APS
A mandrel winding method, which can realize remarkable homogeneous plastic deformation
at room temperature for various metallic glasses, is applied to characterize plastic flow units …