The mechanical properties of cellular metallic glasses (MGs) are governed by the shape of their cellular structures. We employ finite element method analysis to characterize the mechanical behavior under quasi-static compression of cellular MGs with the same porosity but different shape, including stochastic (disordered) structures with uniform or gradient porosity and periodic (ordered) microlattice structures such as honeycomb, chiral, and body-centered cubic structures. The results show that stochastic structures with graded porosities degrade the yield strength and Young's modulus compared to uniform cellular MGs. MGs with microlattice structures display much lower Young's modulus and yield strength than stochastic cellular MGs with uniform porosity. However, the chiral structure presents the largest Young's modulus of all cellular MG models investigated. Furthermore, MGs with stochastic cellular structures exhibit much higher energy absorption capacity than those with microlattice structures. It is found that the deformation behaviors of cellular MGs can be tuned by adjusting their cellular structures. The obtained structure-mechanical properties relationship can provide useful guidance for designing cellular MG-based composites for advanced multifunctional applications.

多孔金属玻璃 (MG) 的机械性能取决于其多孔结构的形状。我们采用有限元方法分析来表征具有相同孔隙率但不同形状的蜂窝MG在准静态压缩下的力学行为，包括具有均匀或梯度孔隙率的随机（无序）结构和周期性（有序）微晶格结构，例如蜂窝，手性, 和体心立方结构。结果表明，与均匀的多孔 MG 相比，具有渐变孔隙率的随机结构会降低屈服强度和杨氏模量。具有微晶格结构的 MG 显示出比具有均匀孔隙率的随机蜂窝 MG 低得多的杨氏模量和屈服强度。然而，手性结构呈现最大的Young' 研究的所有细胞 MG 模型的 s 模量。此外，具有随机蜂窝结构的 MG 比具有微晶格结构的 MG 表现出更高的能量吸收能力。研究发现，可以通过调整其细胞结构来调整细胞 MG 的变形行为。获得的结构-机械性能关系可为设计用于高级多功能应用的蜂窝 MG 基复合材料提供有用的指导。