Zr_52.5Cu_17.9Ni_14.6Al₁₀Ti₅ (BAM-11) and Cu₆₀Zr₂₀Hf₁₀Ti₁₀ bulk metallic glass (BMG) specimens were ion irradiated to characterize and compare their irradiation induced microstructural and mechanical property evolution. For the ion irradiations, samples of each BMG were exposed to 9 MeV Ni³⁺ and 5.5 MeV C⁺ ions to a midrange (∼1.5 μm depth) dose of 0.5 displacements per atom (dpa) at temperatures ranging from room temperature to 360 °C in order to examine potential effects associated with low (5.5 MeV C) and high (9 MeV Ni) average primary knock on energies. BAM-11 samples were also irradiated by neutrons (E > 0.1 MeV) at ∼70 °C to a fluence of 1.4 × 10²⁰ n/cm² (dose of 0.1 dpa). Importantly, no pronounced irradiation spectrum effects were observed for the nanoindentation mechanical properties of the two BMGs following ion irradiation. However, significant softening was observed in the BAM-11 sample irradiated by neutrons, while annealing of the unirradiated samples led to a marked increase in hardening. Results of the nanoindentation experiments indicate that softening is caused by irradiation induced creation of free volume defects, while the hardening is caused by their annihilation.

对Zr _52.5 Cu _17.9 Ni _14.6 Al ₁₀ Ti ₅（BAM-11）和Cu ₆₀ Zr ₂₀ Hf ₁₀ Ti ₁₀大块金属玻璃（BMG）样品进行离子辐照，以表征和比较辐照引起的显微组织和力学性能的演变。对于离子辐照，每个BMG的样品都暴露于9 MeV Ni ³⁺和5.5 MeV C ⁺在室温至360°C的温度范围内将离子迁移至0.5个位移/原子（dpa）的中程（〜1.5μm深度）剂量，以检查与低（5.5 MeV C）和高（9 MeV Ni）相关的潜在影响平均一次能量敲击。BAM-11样品也被中子（E> 0.1 MeV）在约70°C的辐射下照射至1.4×10 ²⁰ n / cm ^2。（剂量为0.1 dpa）。重要的是，在离子辐照之后，没有观察到两种BMG的纳米压痕力学性能的显着辐照光谱效应。但是，在中子辐照的BAM-11样品中观察到明显的软化，而未辐照样品的退火导致淬火明显增加。纳米压痕实验的结果表明，软化是由辐照引起的自由体积缺陷的产生引起的，而硬化是由其their灭引起的。