Study on the Reaction Characteristics and Safety Performance of Al-Li Alloy Fuel/CL-20 Cast Explosive

YAO Jie; YAN Shi; XU Yilong; YANG Fengyou; GUO Xueyong

doi:10.12382/bgxb.2026.0327

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Study on the Reaction Characteristics and Safety Performance of Al-Li Alloy Fuel/CL-20 Cast Explosive

更新时间：2026-09-08

- Study on the Reaction Characteristics and Safety Performance of Al-Li Alloy Fuel/CL-20 Cast Explosive
- Acta Armamentarii (2026)
- 作者机构：
  
  1.北京理工大学爆炸科学与安全防护全国重点实验室, 北京 100081
  2.重庆红宇精密工业集团有限公司, 重庆 4027604
- 作者简介：
- 基金信息：
- DOI：10.12382/bgxb.2026.0327
  CLC： TJ55
- Received：13 April 2026，
  
  Revised：2026-05-20，
  
  Accepted：25 May 2026，
- 稿件说明：
移动端阅览
YAO Jie, YAN Shi, XU Yilong, et al. Study on the Reaction Characteristics and Safety Performance of Al-Li Alloy Fuel/CL-20 Cast Explosive[J/OL]. Acta Armamentarii, 2026.
DOI：

YAO Jie, YAN Shi, XU Yilong, et al. Study on the Reaction Characteristics and Safety Performance of Al-Li Alloy Fuel/CL-20 Cast Explosive[J/OL]. Acta Armamentarii, 2026. DOI： 10.12382/bgxb.2026.0327.

摘要

为显著提升浇注炸药的能量输出与综合毁伤效能，本研究聚焦于Al-Li合金燃料在高能炸药体系中的应用潜力与作用机制。利用真空熔炼-气流雾化复合制备技术，成功定制了粒径为13 µm Al-Li合金燃料。借助激光诊断、电爆炸试验、相容性试验及爆热测试等手段，系统研究了该合金燃料与CL-20之间的反应特性，及其在CL-20基浇注炸药中的安全性与爆轰性能。结果表明：制备的Al-Li合金燃料粒度均匀、表面光滑，中位粒径（

）约为13 µm。随着锂含量增加至4%，燃料的硬度逐渐上升，燃烧热值提升至31.03 kJ/g，与CL-20之间的反应特性更加显著。瞬态升温特性表明，Al-Li合金燃料在瞬时升温过程中的增压速率和冲击波速度均显著提升，其中AlLi4合金燃料的增压速率可达24.39 MPa·s

-1

，冲击波速度可达607.73 m/s。Al-Li合金燃料与浇注炸药关键组分HTPB之间的相容性较差，当锂含量提升至4%时，相容性已无法满足使用要求；同时，机械感度亦随锂含量的增加逐渐升高。此外，设计了含AlLi2浇注炸药，与含铝浇注炸药相比，其爆速提升123.68 m/s，爆热提升240.56 kJ/kg。

Abstract

To significantly enhance the energy output and comprehensive damage efficacy of cast explosives

this study focuses on the application potential and action mechanism of Al-Li alloy fuel in high-energy explosive systems. Al-Li alloy fuel with a particle size of 13 µm was successfully customized using a combined vacuum melting and gas atomization preparation technique. The reaction characteristics between the alloy fuel and CL-20

as well as its safety and detonation performance in CL-20‑based cast explosives

were systematically investigated by means of laser diagnostics

electric explosion tests

compatibility tests

and detonation heat measurements. The results show that the as-prepared Al-Li alloy fuel exhibits uniform particle size and a smooth surface

with a median particle diameter (

) of approximately 13 µm. As the l

ithium content increases to 4%

the hardness of the fuel gradually rises

the combustion heat value increases to 31.03 kJ/g

and the reaction characteristics with CL-20 become more pronounced. Transient heating characteristics indicate that the pressurization rate and shock wave velocity of the Al-Li alloy fuel during instantaneous temperature rise are significantly improved. Specifically

for the AlLi4 alloy fuel

the pressurization rate reaches 24.39 MPa·s⁻¹

and the shock wave velocity reaches 607.73 m/s. The compatibility between the Al-Li alloy fuel and HTPB

a key component of the cast explosive

is poor; when the lithium content increases to 4%

the compatibility no longer meets the application requirements. Meanwhile

the mechanical sensitivity gradually increases with rising lithium content. Furthermore

compared with an aluminum‑containing cast explosive

the cast explosive containing AlLi2 exhibits an increase in detonation velocity of 123.68 m/s and an increase in detonation heat of 240.56 kJ/kg.

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Keywords

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