Compositional complexity buffers free-volume sensitivity and serrated flow in metallic glasses.

ABSTRACT: Processing history imprints metallic glasses (MGs), yet whether compositional complexity desensitizes structure and mechanics to quench rate remains unresolved. We use large-scale molecular dynamics along a controlled Cu-Zr complexity ladder, Cu₅₀Zr₅₀, Cu_47.5Zr_47.5Al₅, and Cu₄₅Zr₄₅Al₅Ti₅, vitrified over 10¹¹-10¹⁵ K·s^-1 and probed by spherical nanoindentation. Additionally, composition-resolved Cu _x Zr_100-x sweep (x = 40-65 at.%) and a microalloying series Cu_50-z/2Zr_50-z/2Al _z , (z = 1-5 at.%) disentangle configurational entropy-driven effects from enthalpic

SUBMITTER: Bajpai A 

PROVIDER: S-EPMC12855008 | biostudies-literature | 2026

REPOSITORIES: biostudies-literature