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arXiv · 1904.06192

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

Muhammad Hassani·Alexandra E. Lagogianni·Fathollah Varnik
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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.

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Muhammad Hassani, Alexandra E. Lagogianni, Fathollah Varnik. 2019-04-12. Probing the degree of heterogeneity within a shear band of a model glass. https://doi.org/10.1103/physrevlett.123.195502

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