速度和钨丝直径对钨丝/锆基非晶复合材料侵彻性能的影响

EFFECT OF VELOCITY AND DIAMETER OF TUNGSTEN FIBER ON PENETRATION

摘要:

为了研究高速撞击条件下含不同直径钨丝/锆基非晶复合材料弹芯的侵彻特性，使用含有四种不同直径钨丝的复合材料弹芯在1000m/s~1600m/s的速度区间进行穿甲试验。研究发现：钨丝/锆基非晶复合材料弹坑直径比钨合金小10%以上，“自锐”效果明显；理想侵彻时，存在一个阀值速度，钨丝/锆基非晶复合材料在低于该速度侵彻时，其侵彻过程中的破坏模式为类似于贫铀合金的绝热剪切破坏，而高于该阈值速度时，破坏模式变成钨丝的屈曲、回流，而且该阀值速度随着复合材料中钨丝直径的增加而增加；钨丝/锆基非晶复合材料中钨丝的直径会影响着其侵彻过程中的稳定性，钨丝直径越大，该复合材料在侵彻过程中越容易出现劈裂等破坏，导致弹道偏转等。

Abstract:

In order to study Wf/Zr-based metallic glass composites containing four kinds of tungsten fiber with different diameters, penetration experiments are taken to perforate homogeneous armor steel at velocity 1270m/s to 1600m/s. The results demonstrate that the both of the diameter of the tungsten fiber and the velocity are critical parameters for penetration ability. Firstly, the diameter of Wf/Zr-based metallic glass composites is more than 10% smaller than tungsten, which illustrates that the Wf/Zr-based metallic glass composite keeps self-sharping during the penetration process. Next, the failure mechanism of Wf/Zr-based metallic glass composite changes form adiabatic shear failure to the tungsten fiber buckling and back-flow due of the velocity increase. The diameter of tungsten fiber is smaller, the more stable the penetration process would be, because the stability of penetration is affected by the diameter of the tungsten fiber.