摘要
针对体积分数为80%的钨丝/Zr38Ti17Cu10.5Co12Be22.5非晶复合材料长杆体弹芯,开展了在1300-1700 m/s撞击速度下侵彻30CrMnMo钢板的实验研究,并与普通钨合金弹芯进行了对比。研究发现,由这种材料制成的弹芯在高速侵彻时形成完全不同于钨合金和贫铀合金的侵彻特性,主要表现在：（1）在高速撞击条件下,钨丝/锆基非晶复合材料弹芯先后发生非晶气化、弹芯外侧钨丝屈曲和弯曲断裂、钨丝回流现象,使弹芯在侵彻过程中保持自锐,并且其侵彻能力高于普通93钨合金;（2）这种复合材料在高速侵彻过程中,由于非晶气化,一方面会造成钨丝的动态屈曲与劈裂、弹芯刚度降低、侵彻分叉,会使侵彻过程中靶板抗力不对称,产生弹道弯曲等现象,相对减弱自锐性效果;另一方面,非晶气化导致回流的钨丝在弹坑侧壁产生沟槽划痕,气化形成的高压气体作用在弹坑划痕沟槽处易形成贯穿性裂纹,利于二次杀伤。
An experimental study was conducted for W/Zr38Ti17Cu10.5Co12Be22.5 composite pole penetrators perforating 30 CrMnMo steel plates at velocities between 1300 m/s and 1700 m/s, and the penetrators were compared with the tungsten alloy pole penetrators. It is found that the penetration characteristics of the composites are different from those of the tungsten alloy and the depleted uranium alloy. Firstly, under the high velocity penetration, the composites have the phenomena of the amorphous alloy gasification, the tungsten fiber outside of the penetrator buckling and fracture, and the backflow of part of tungsten fiber during the penetration process, so the penetrator keeps self-sharpening, and the penetration is deeper than that of the tungsten alloy. Secondly, because of the amorphous gasification, the tungsten fiber outside dynamic buckling and splitting occur, the stiffness of the penetrator declines, and the penetration bifurcates, so the resistance of the plate is asymmetric, and the ballistic bending appears, which reduce the depth of the penetration. Meanwhile, the backflow of tungsten fiber gashes the sidewall of ballistic, and then the high pressure gas from the amorphous gasification impacts the scratch, which will produce the perfoliate cracks, so it is beneficial to the second damage.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2016年第5期1308-1313,共6页
Rare Metal Materials and Engineering
基金
国家自然科学基金(11372142)
爆炸科学与技术国家重点实验室(北京理工大学)开放基金(KFJJ12-9M)
关键词
钨丝
锆基非晶复合材料
高速侵彻
自锐
tungsten fiber
Zr-based amorphous composites
high velocity penetration
self-sharpening
