Research on mechanism of shock fragmentation reaction of Zr-based bulk metallic glass fragment

ZHANG Yunfeng; FANG Long; WEI Xin; XU Chang; SUI Yaguang; SHI Dongmei

doi:10.11883/bzycj-2022-0187

Volume 43 Issue 1

Jan. 2023

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Article Navigation > Explosion And Shock Waves > 2023 > 43(1): 013103

ZHANG Yunfeng, FANG Long, WEI Xin, XU Chang, SUI Yaguang, SHI Dongmei. Research on mechanism of shock fragmentation reaction of Zr-based bulk metallic glass fragment[J]. Explosion And Shock Waves, 2023, 43(1): 013103. doi: 10.11883/bzycj-2022-0187

Citation:

ZHANG Yunfeng, FANG Long, WEI Xin, XU Chang, SUI Yaguang, SHI Dongmei. Research on mechanism of shock fragmentation reaction of Zr-based bulk metallic glass fragment[J]. Explosion And Shock Waves, 2023, 43(1): 013103. doi: 10.11883/bzycj-2022-0187

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Research on mechanism of shock fragmentation reaction of Zr-based bulk metallic glass fragment

doi: 10.11883/bzycj-2022-0187

1.
Northwest Institute of Nuclear Technology, Xi’an 710000, Shaanxi, China
2.
Shijiazhuang Campus of Army Engineering University, Shijiazhuang 050000, Hebei, China

Received Date: 2022-05-05
Rev Recd Date: 2022-09-04

Available Online: 2022-09-14

Publish Date: 2023-01-05

Abstract

Abstract

Zr-based bulk metallic glasses are novel class of functional materials that comprehensively use chemical energy and kinetic energy to improve the damage effect of warhead. To investigate the mechanism of shock fragmentation reaction of Zr-based bulk metallic glass fragments, quasi-sealed venting chamber was used to measure the released energy of Zr_62.5Nb₃Cu_14.5Ni₁₄Al₆ bulk metallic glass fragments under impact conditions. The fragments were driven by a 14.5 mm ballistic gun, with various levels of velocity, to impact the sealed chamber covered by 0.5 mm thick steel plates. High-speed camera was used to record the shock-fragmentation-reaction process through an observational window. The pressure in the chamber was measured by two pressure sensors installed in different positions on the inner wall of the chamber. The particle size of the fragment debris was measured by laser diffraction method and weighting method. And the debris with different particle sizes was analyzed by X-ray diffraction. According to one dimensional shock wave theory, the impact temperature of Zr-based bulk metallic glass was derived. Combined with the impact temperature, the fragment debris distribution model and metal particle ignition model, the shock-fragmentation-reaction theoretical model was developed to quickly calculate the extent of reaction of Zr-based bulk metallic glass fragments. The experiments results show that the reaction depth of material under impact loading increases with the increase of impact velocity. The distribution of debris conforms to the piecewise power law, and the size distribution of debris was fitted. The main chemical reaction induced by material impacting is the combustion of Zr and O₂ in the air, and the main reaction product is ZrO₂. Theoretical analysis results show that the shock-fragmentation-reaction theoretical model based on impact heating, debris distribution and debris combustion can explain the reaction law of Zr-based bulk metallic glass under impact loading well. And the theoretical calculation is in good agreement with the experimental results.
- Zr-based bulk metallic glass,
- impact,
- fragmentation,
- reaction mechanism

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References

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