新型B4C/Al双连续梯度装甲材料的微结构控制及其损伤演化机制

陶瓷/金属层状装甲材料的界面阶跃变化是导致其抗打击能力下降的关键因素之一，陶瓷/金属复合材料的梯度化可有效地解决其界面阶跃变化，改善其冲击载荷下的界面应力状态，充分发挥陶瓷的高强、高硬特性和金属的高韧性，可满足未来轻量化和高效化装甲系统对高性能装甲材料的需求。本项目以B4C/Al梯度装甲材料为研究对象，通过材料的结构设计与制备工艺的优化，实现材料中陶瓷与金属的双连续和成分的连续梯度。系统研究材料的组成、结构及微观组织对其抗侵彻性能的影响规律与机理，揭示其在冲击载荷下的损伤行为及动态响应机制，为其在军机、坦克、装甲车辆以及作战人员装甲系统中的应用奠定理论和技术支撑。

The interface step change of layered ceramic/metal armour materials is one of the key factors decreasing the impact resistance. The gradient of ceramic/metal composites may resolve the interface step change, improve the interface stress state under impact and exert the high strength and hardness of ceramic and high toughness of metal, meeting the requirements of advanced armour materials in light weight and high efficiency armour systems. Considering the gradient B4C/Al armour materials, this project aims to realize the ceramic-metal co-continuity and continuous composition gradient. The effect of composition, structure and microstructure on ballistic performance will be systematic researched, revealing the damage behavior and dynamic response mechanism under impact, providing a steady base in theory and technology for the application in military aircraft, tanks, armoured vehicles and combatant armour system.