We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Viscosity and transport in a model fragile metallic glass
Summary
This paper uses the term 'microplasticity' in the context of metallic glass physics, describing how thermally activated atomic movements drive deformation in amorphous metals at the microscale. This is a materials physics paper unrelated to environmental microplastic pollution.
How thermally activated structural excitations quantitatively mediate transport and microplasticity in a model binary glass at the microsecond timescale is revealed using atomistic simulation. These local excitations, involving a stringlike sequence of atomic displacements, admit a far-field shear-stress signature and underlie the transport of free-volume and bond geometry. Such transport is found to correspond to the evolution of a disclination network describing the spatial connectivity of topologically distinct bonding environments, demonstrating the important role of geometrical frustration in both glass structure and its underlying dynamics.
Sign in to start a discussion.
More Papers Like This
Metallic glasses: Elastically stiff yet flowing at any stress
Researchers demonstrated that metallic glass, an amorphous solid with high yield stress, lacks a true microscopic elastic limit. Using coherent X-ray scattering, they found that even extremely small stresses accelerate atomic-scale transport within the material. The findings reveal fundamental differences in how amorphous and crystalline solids respond to mechanical stress at the atomic level.
Elasto-plastic behavior of amorphous materials: a brief review
This materials science review discusses how disordered (amorphous) materials like metallic and silicate glasses deform plastically at the atomic scale, focusing on localized shear band formation. The term 'plasticity' here refers to material deformation behavior, not environmental plastic particles.
Atomistic mechanisms of cyclic hardening in metallic glass
This materials science paper investigated atomic-level mechanisms by which metallic glass strengthens under cyclic mechanical loading, using computer simulations to study how structural changes accumulate. This is a condensed matter physics study with no relevance to environmental microplastics.
Stress breaks universal aging behavior in a metallic glass
Researchers discovered that applying mechanical stress to metallic glass — an amorphous, non-crystalline metal — disrupts the material's predictable aging behavior by triggering localized microscale plastic deformation events (called microplastic events) that cause irregular, unpredictable changes in the material's internal structure. This finding challenges a long-standing universal model used to predict how metallic glasses behave under stress over time.
Beyond Serrated Flow in Bulk Metallic Glasses: What Comes Next?
This is a materials science article on serrated flow and plastic deformation in bulk metallic glasses, exploring unusual mechanical behavior in these amorphous metals. It is not related to microplastics or environmental science.