穿甲试验靶弹孔微观结构和绝热剪切带特性  

Microstructure near the Penetrated Hole in an Experimental Penetration Target and Characteristics of the Adiabatic Shear Band

作　　者：李金泉[1] 黄德武[2] 段占强[2] 丛美华[2] 

机构地区：[1]南京理工大学,南京210094 [2]沈阳工业学院,沈阳110015

出　　处：《北京科技大学学报》2003年第6期545-548,共4页Journal of University of Science and Technology Beijing

基　　金：国家自然科学基金(No.59971058)

摘　　要：发射海37弹道炮对60钢装甲靶板穿孔周围的微观结构进行了研究。在弹孔表面发现有钨的成分,说明在高速侵彻过程中产生的高压可以使钨熔化。弹孔周围的绝热剪切带沿主剪应力方向形成,与静态塑性变形滑移线方向接近,绝热剪切带上不均匀的变形将产生微裂纹和微孔洞。在弹孔周围同时发现相变带和形变带两种绝热剪切带。The microstructure near the penetrated hole of a 60 steel target was analyzed by launching a navy 37 gun. It is shown that the melting of 93 W alloy occurs under the high pressure in the process of penetration because there is a component of 93 W alloy on the surface of the penetrated hole. An adiabatic shear band formed along the main shear stress around the penetrated hole is approximately consistent with the direction of plastic deformation slip lines in static state. Non-homogenous deformation inside the adiabatic shear band causes microcracks and micropores. Two kinds of adiabatic shear bands were found, including the deformed band and the phase-transformed band.

关 键 词：穿甲试验 靶弹孔 微观结构 绝热剪切带 高速碰撞侵彻 熔化 穿甲弹体 

分 类 号：TJ413.2[兵器科学与技术—火炮、自动武器与弹药工程]