先进钻地弹高速侵彻实验中质量磨蚀金相分析  

Metallographic observation of reduced-scale advanced EPW after high-speed penetration

作　　者：何丽灵[1] 陈小伟[1] 范瑛[1] 

机构地区：[1]中国工程物理研究院总体工程研究所,四川绵阳621900

出　　处：《爆炸与冲击》2012年第5期515-522,共8页Explosion and Shock Waves

基　　金：中国工程物理研究院发展基金重点项目(2009A0201009);"双百人才"基金项目(ZX04001);中国工程物理研究院总体工程研究所青年创新基金项目(10cxj17)

摘　　要：开展2组先进钻地缩比弹高速侵彻混凝土实验,侵彻速度在1 130～1 650m/s之间。针对弹体结构特点,金相分析了侵彻后剩余弹体,发现弹体与靶接触的表面(包括弹头和壳体段)均存在明显热影响区(Heat affected zone,HAZ),而与靶脱离接触部分未发现明显热影响区,因而弹靶相互作用是热影响区产生的主要原因。在弹尖部位存在少量绝热剪切带(Adiabatic shearing band,ASB),其对弹体质量损失有一定贡献,但在实验撞击速度范围内其影响有限。ASB可能引起弹尖非对称磨蚀,进而降低弹体侵彻性能。In order to enhance the structural stability of earth penetration warhead （EPW） in highspeed penetration, the advanced EPW was designed. The performance of the reduced-scale advanced EPW was experimentally studied during the striking velocity between 1 130-1 650 m/s. The residual projectiles were studied by metallography. It is found that the heat affected zone （HAZ） is distributed around the projectile surface where the projectile and target contact, including the projectile nose and shank. There is no significant HAZ in the area where the projectile and target off contact. It is concluded that the interaction between target and projectile brings HAZ in. On the other hand, there are several adiabatic shearing bands （ASBs） distributed at the projectile nose tip. Although ASB has positive contribution to the projectile mass loss, the influence can be neglected during the experimental striking velocity range due to the rare number of ASB and the limited distribution area. However, ASB may lead to the nonsymmetrical abrasion of penetrator and then decrease the performance of projectile at higher penetration velocity.

关 键 词：爆炸力学 高速侵彻 先进钻地缩比弹 热影响区 绝热剪切带 金相分析 

分 类 号：O383[理学—流体力学]