Tough Hypoeutectic Zr-Based Bulk Metallic Glasses

摘要

Significant softening of Zr-based bulk metallic glasses (BMGs) can be seen in a hypoeutectic Zr-enriched composition, which brings about very high toughness (for the Zr₅₅Cu₃₅Al₁₀ and Zr₆₀Cu₃₀Al₁₀ BMGs) and tensile plasticity at room temperature (for the Zr₇₀Ni₁₆Cu₆Al₈ BMG). The unique features of such BMGs include the formation of multiple shear bands and harmonic alternating movements that can immediately accommodate concentrated stresses and avoid accidental catastrophic fracture.