80%钨纤维增强锆(Zr)基块体金属玻璃复合材料长杆弹侵彻钢靶实验研究

本文在765~1766m/s速度范围内,对钨纤维体积分数为80%的增强锆(Zr)基块体金属玻璃复合材料长杆弹进行侵彻Q235钢靶的穿甲试验,对残余弹体进行宏、细观观测,研究弹体材料的失效破坏模式。穿甲试验表明,在大于1000m/s速度侵彻时,钨纤维非晶弹拥有头形自锐能力,表现出优秀的侵彻能力。弹材变形和破坏主要发生于弹体头部边缘层,呈局域化和尖锐化特点,而且边缘层厚度在整个高速穿甲过程中保持动态平衡。由于非晶基体作用,弹体材料易发生剪切断裂等破坏,通过流动形成质量侵蚀并导致弹体头部边缘层形成自锐。

Experimental Research on Steel Target Penetration of Long Rod Projectile Made of 80% W-fiber/Zr-based BMG

Within velocity range from 765m/s to 1766m/s, Q235 steel target penetration experiment of long rod projectile made of reinforced tungsten fiber with 80% volume fraction/Zr-based bulk metallic glass (BMG) composite material was carried out. The residual projectiles were observed and analyzed by integrated macro-meso metallographic analysis, the failure mode of shell composite material was studied. Penetration experiments show that when the penetration velocity is greater than 1000 m/s, amorphous Tungsten fiber presents a head shape self-sharpening ability and displays excellent penetration performance. Shell material deformation and damage occur mainly at the shell head edge layer with characteristics of localization and sharpening. The edge thickness of rod head maintains dynamic equilibrium in the whole process of high-speed penetration. Due to the amorphous matrix, shell material is prone to shear failure and forms mass erosion by the flow, which results in self-sharpening in the shell head edge layer.