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。 With the help of metallurgical analysis, the macroscopic and microscopic characteristics of Si-Mn armor-steel thin-target pendant crater were studied. The study shows that the jets can easily penetrate the damaged targets due to the propagation of stress waves which lead to more damage (dehiscence) at the jet penetration front. Although the mechanism of detonation is still mainly penetration and friction, However, the short time does not form a white layer near the pore wall and its corresponding structure, and the kinetic energy of the jet after piercing is still relatively high and rarely deposits on the pore wall.