新型亚稳态合金材料冲击释能特性

Shock Energy Release Characteristics of Novel Metastable Alloy Materials

为研究新型ZrNiAlCuAg亚稳态合金材料的冲击释能特性,采用准密封箱试验系统对含能破片进行了冲击超压试验,研究了材料在不同冲击速度下的超压时程曲线变化规律、超压峰值和超压峰值增长率。对比了新型ZrNiAlCuAg亚稳态合金材料与多种多功能含能结构材料的单位质量能量密度和单位体积能量密度。结果表明材料超压时程曲线呈先急速上升后缓慢下降的特点,其超压峰值、超压峰值增长率均与冲击速度正相关;当冲击速度大于1400 m·s^-1时,其反应效率接近40%。低速冲击时,材料的能量密度与其它含能破片相近,冲击速度达到1100 m·s^-1时,其能量密度快速上升,并超越其它种类含能破片,当冲击速度为1485 m·s^-1时,新型ZrNiAlCuAg亚稳态合金材料的单位质量能量密度达到3.83 kJ·g^-1,单位体积能量密度达到0.026 kJ·mm^-3。

To study the shock energy release characteristics of new ZrNiAlCuAg metastable alloy material,the shock overpressure experiments of energetic fragments were processed with quasi-sealed chamber test system. The change rule of overpressure time history curves,the overpressure peak value and growth rates of overpressure peak value of materials under different shock velocities were studied. The specific energy per unit mass and specific energy per volume of new ZrNiAlCuAg metastable alloy materials and multifunctional energetic structural materials were compared. The results show that the overpressure time history curves of materials show the characteristic of rapid rise first and slow decline later. The overpressure peak value and growth rate of overpressure peak value have positive correlations with the impact velocities. The reaction efficiency is close to 40% when the shock velocity is greater than 1400 m·s^-1. The energetic density of material was closed to other type of energetic fragments under lower shock velocities. The energetic density increases rapidly when the shock velocity reaches 1100 m·s^-1,which surpasses the other kinds of energetic fragments. The specific energy per unit mass of ZrNiAlCuAg metastable alloy material reaches 3.83 kJ·g^-1 and its specific energy per unit volume reaches 0.026 kJ·mm^-3 when the shock velocity is 1485 m·s^-1.