Correlations of non-affine displacements in metallic glasses through the yield transition

Abstract

We study correlations of non-affine displacement during simple shear deformation of Cu-Zr bulk metallic glasses in molecular dynamics calculations. In the elastic regime, our calculations show exponential correlation with a decay length that we interpret as the size of a shear transformation zone in the elastic regime. This correlation length becomes system-size dependent beyond the yield transition as our calculation develops a shear band, indicative of a diverging length scale. We interpret these observations in the context of a recent proposition of yield as a first-order phase transition.

arXiv comment23 pages, 8 figures

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Cited by in corpus (10)

• Shear band formation in amorphous materials under oscillatory shear deformation
• Spatiotemporal analysis of nonaffine displacements in disordered solids sheared across the yielding point
• Accessing a broader range of energy states in metallic glasses by variable-amplitude oscillatory shear
• A delayed yielding transition in mechanically annealed binary glasses at finite temperature
• Timescale bridging in atomistic simulations of epoxy polymer mechanics using non-affine deformation theory
• Shear band healing in amorphous materials by small-amplitude oscillatory shear deformation
• Yielding under compression and the polyamorphic transition in silicon
• Local elastic properties of polystyrene nanocomposites increase significantly due to non-affine deformations
• Machine Learning-Informed Scattering Correlation Analysis of Sheared Colloids
• Nonequilibrium plastic roughening of metallic glasses yields self-affine topographies with strain-rate and temperature-dependent scaling exponents