Properties of Zr-based bulk metallic glass under shock compression
Properties of Zr-based bulk metallic glass under shock compression
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DOI：
10.1016/j.msea.2006.02.431
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发表时间：
2007-03
期刊：
影响因子：
6.4
通讯作者：
H. Togo;Y. Zhang;Y. Kawamura;T. Mashimo
中科院分区：
文献类型：
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作者：
H. Togo;Y. Zhang;Y. Kawamura;T. Mashimo
自 20 世纪 90 年代以来，人们发现了多种块状金属玻璃。然而，对非晶结构单相块体金属玻璃的动态压缩性能的研究很少。本研究采用斜镜法结合粉末枪在高达45GPa的压力范围内对Zr55Al10Ni5Cu30(at.%)块体金属玻璃进行了Hugoniot测量实验，以研究块体金属玻璃的弹塑性转变和相变。 Zr55Al10Ni5Cu30大块金属玻璃的休格尼奥弹性极限应力>5GPa，远大于其他金属。在块状金属玻璃的冲击速度与粒子速度关系上观察到扭结，这可能是由相变引起的。在低压下回收的块状金属玻璃的断裂面上观察到具有静脉图案的延性韧窝断裂。
Many kinds of bulk metallic glasses have been discovered since the 1990s. However, there have been very few investigations of the dynamic compression properties of bulk metallic glasses with amorphous structured single-phase. In this study, Hugoniot-measurement experiments have been performed on Zr55Al10Ni5Cu30(at.%) bulk metallic glass by the inclined-mirror method combined with a powder gun in the pressure range up to 45GPa in order to investigate the elasto-plastic transition and phase transition of the bulk metallic glass. The Hugoniot-elastic limit stress of Zr55Al10Ni5Cu30bulk metallic glass was >5GPa which is much larger than that of the other metals. A kink was observed on the shock velocity versus particle velocity relationship of bulk metallic glass, which may be caused by phase transition. Ductile dimple fracture with a vein pattern was observed on the fracture surfaces of the recovered bulk metallic glass under low pressures.