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Nicolás Amigo,Felipe J. Valencia 대한금속·재료학회 2022 METALS AND MATERIALS International Vol.28 No.9
Rejuvenation is a process devoted to the structural excitation of metallic glasses (MGs), ultimately leading to enhanced plasticity. In this work, thermal-pressure treatments were performed on Cu100−xZrx MGs using molecular dynamics simulationsand the rejuvenation degree was explored by means of compression tests and structural characterization. MGs with high Zrcontent presented increased rejuvenation than their Cu-rich counterparts. This behavior is attributed to the large populationsof liquid-like polyhedra promoted by high contents of Zr species, which favor the deformation and re-arrangement processof the more centrosymmetric polyhedra during rejuvenation. Overall, our results indicate that thermal-pressure treatmentsare more effective at larger contents of Zr atoms, offering new insights in the fabrication of MGs with tailored properties.