In this study, bulk metallic glass composite (BMGC) reinforced with a novel spiral structure of tungsten wires was prepared. The composite exhibits a high ultimate strength of 2830 MPa and a large plasticity of 26% under quasi-static compression. The dynamic compressive mechanical properties of this BMGC were also systematically investigated by split Hopkinson pressure bar technique. It is found that the yield stress of the composite under uniaxial compression increases firstly and then decreases with increasing the strain rate. To describe the strain-rate dependence of the yielding behavior of the composite, a constitutive model considering adiabatic shear localization was established. Furthermore, the deformation and fracture behaviors of the composite under quasi-static and dynamic compression were discussed in detail. Different from the tungsten fiber reinforced bulk metallic glass composites (BMGCs), the spiral tungsten wire reinforced BMGC fractured in a shear mode, which is distinctly favorable to the self-sharpening capability. These findings could deepen the understanding of deformation behaviors and failure modes of BMGCs and promote their applications.

在这项研究中，制备了具有新颖的钨丝螺旋结构的块状金属玻璃复合材料（BMGC）。该复合材料在准静态压缩下表现出2830 MPa的高极限强度和26％的大可塑性。还通过分裂霍普金森压力棒技术系统地研究了该BMGC的动态压缩力学性能。结果表明，单轴压缩复合材料的屈服应力随着应变率的增加先增大后减小。为了描述复合材料屈服行为的应变率依赖性，建立了考虑绝热剪切局部性的本构模型。此外，详细讨论了复合材料在准静态和动态压缩下的变形和断裂行为。与钨纤维增强的块状金属玻璃复合材料（BMGC）不同，螺旋钨丝增强的BMGC以剪切模式断裂，这明显有利于自锐化能力。这些发现可以加深对BMGC变形行为和破坏模式的理解，并促进其应用。