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针对钨合金作为预制破片战斗部穿甲后的易碎性,采用圆筒内嵌钨合金球战斗部,研究了97.5W-Ni-Fe合金在圆筒内嵌式爆炸加载穿靶前后的微观组织以及断裂机制。结果表明,97.5W-Ni-Fe合金爆炸加载后在钨颗粒内部产生大量形变孪晶,穿透靶板后形变孪晶诱发大量微观裂纹,微裂纹在穿靶后的拉应力作用下扩展并与W-W界面断裂相互连接,使钨合金球断裂成有效破片,增强了钨合金的二次毁伤能力。
Aimed at the brittleness of tungsten alloy as a prefabricated fragment warhead, we studied the microstructure of 97.5W-Ni-Fe alloy before and after penetrating the cylinder with an embedded explosive loading As well as fracture mechanism. The results show that a large amount of deformation twins are generated inside the tungsten particles after explosion loading of the 97.5W-Ni-Fe alloy, and a large number of micro-cracks are induced by the deformation twinning after penetrating the target plate. The micro-cracks expand under the tensile stress after passing through the target WW interface fracture interconnected, the tungsten alloy ball fracture into an effective fragment, enhanced secondary damage to tungsten alloys.