硅锰装甲钢破甲弹坑宏观和微观分析

MACROSCOPICAL AND MICROSCOPICAL ANALYSIS FOR THIN Si-Mn ARMOUR STEEL TARGET SUBJECTED TO PENETRATION OF SHAPED CHARGE JET

借助于冶金分析方法研究了硅锰装甲钢薄靶破甲弹坑的宏观和微观特征。研究表明，由于应力波的传播在射流侵彻前沿形成较多的损伤（层裂），因此射流在已受损的靶材上很容易侵彻；尽管破甲机制仍主要是侵彻和摩擦，但作用的时间短未能在孔壁附近形成白层和其相应结构，而且在穿孔后射流的动能仍较高而很少沉积在孔壁上。

By means of metallurgical analysis methods, macroscopical and microscopical characteristics for thin Si-Mn armour steel target subjected to penetration of real shaped charge jet have been investigated. Investigation indicated that propagation of stress wave caused a lot of damages (spalling crack) prior to erosion and that these damages led to steel target to be eroded with ease; It has been found that, though the dominant mechanism was erosion and friction, the interaction between the jet and target was too short to cause a white layer and its corresponding structure in the vicinity of the perforation surface. Meanwhile, the investigation also showed that there was little jet material on perforation, which was attributed to very great kinetic energy of jet material after perforation.