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Sheared multi-component bulk metallic glasses are characterized by bothchemical and structural disorder that define their properties. We investigatethe behavior of the local, microstructural elastic modulus across the plasticyielding transition in six Ni-based multi-component glasses, that arecharacterized by compositional features commonly associated with solid solutionformability. We find that elastic modulus fluctuations display consistentpercolation characteristics pointing towards universal behavior across chemicalcompositions and overall yielding sharpness characteristics. Elasticheterogeneity grows upon shearing via the percolation of elastically softclusters within an otherwise rigid amorphous matrix, confirming priorinvestigations in granular media and colloidal glasses. We find clearsignatures of percolation transition with spanning clusters that areuniversally characterized by scale-free characteristics and critical scalingexponents. The spatial correlation length and mean cluster size tend to divergeprior to yielding, with associated critical exponents that exhibit fairly weakdependence on compositional variations as well as macroscopic stress-straincurve details.

Yielding in multi-component metallic glasses: Universal signatures of elastic modulus heterogeneities