Dynamic indentation response of porous SiC/Ti-based metallic glass composite
Dynamic indentation response of porous SiC/Ti-based metallic glass composite
复制标题
多孔SiC/Ti基金属玻璃复合材料的动态压痕响应
DOI：
10.1016/s1003-6326(16)64447-3
复制
发表时间：
2016-12-01
影响因子：
4.5
通讯作者：
Fu, Hua-meng
中科院分区：
文献类型：
--
作者：
Wang, Ben-peng;Wang, Lu;Fu, Hua-meng
多孔SiC/ ti基金属玻璃复合材料（Ti-BMGC）是一种新型复合材料，在轻型装甲领域具有重要的应用前景。为了评估复合材料的动态力学响应，研究了动态维氏硬度和压痕诱导变形行为，并与静态压痕进行了比较。采用改进的分离式霍普金森压杆（SHPB）测量动态硬度。动态硬度明显大于静态硬度。动态压痕下的脆性参数也大于静态压痕下的脆性参数。虽然动态压痕比静态压痕引起更严重的变形行为，但两种加载情况下的变形和断裂特征几乎相同，都表现为SiC相的广泛裂纹和金属玻璃相的严重塑性变形。
Porous SiC/Ti-based metallic glass composite (Ti-BMGC), a new kind of composite, has significant application prospect in the field of light armor. To evaluate the dynamic mechanical response of the composite, dynamic Vickers hardness and indentation-induced deformation behavior were investigated by comparison with that under static indentation. The dynamic hardness was measured by a modified split Hopkinson pressure bar (SHPB). The dynamic hardness is obviously greater than the static hardness. The brittleness parameter under dynamic indentation is also greater than that under static indentation. Although the dynamic indentation induced more severe deformation behavior than the static indentation, the deformation and fracture characteristics in the two loading cases are nearly the same, both exhibiting extensive cracks in the SiC phase and severe plastic deformation in the metallic glass phase.