Probing the degree of heterogeneity within a shear band of a model glass

Abstract

Recent experiments provide evidence for density variations along shear bands (SB) in metallic glasses with a length scale of a few hundreds nanometers. Via molecular dynamics simulations of a generic binary glass model, here we show that this is strongly correlated with variations of composition, coordination number, viscosity and heat generation. Individual shear events along the SB-path show a mean distance of a few nanometers, comparable to recent experimental findings on medium range order. The aforementioned variations result from these localized perturbations, mediated by elasticity.

arXiv commentThis version includes the supplementary material as well

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Cited by in corpus (12)

• On the shear-affected zone of shear bands in bulk metallic glasses
• Shear band formation in amorphous materials under oscillatory shear deformation
• Brittleness of metallic glasses dictated by their state at the fragile-to-strong transition temperature
• Shear banding instability in \remove{high entropy} multi-component metallic glasses: Interplay of composition and short-range order}
• Rare events and disorder control the brittle yielding of well-annealed amorphous solids
• Unveiling the Asymmetry in Density within the Shear Bands of Metallic Glasses
• A comparison of in- and ex situ generated shear bands in metallic glass by transmission electron microscopy
• What renders bulk metallic glass ductile/brittle? -- new insight from the medium-range order
• Effects of Polydispersity on the Plastic Behaviors of Dense 2D Granular Systems Under Shear
• Universal mechanical response of metallic glasses during strain-rate-dependent uniaxial compression
• A crossover in spatio-temporal correlations of strain fluctuations in glass forming liquids
• Nonaffine motion in flowing highly polydisperse granular media