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针对航天器空间碎片防护材料需求,采用二维编织的TC4纤维作为增强体制备了(2D-Tif)/Al复合材料,并采用二级轻气炮研究了复合材料在高速粒子撞击下的损伤行为及其组织演变规律。结果表明,(2D-Tif)/Al复合材料靶板的破坏以侵彻穿深为主,背面产生了带裂纹的鼓包或发生略微崩落;其抗高速撞击能力优于等厚的LF6基体合金,平均吸能能力比基体合金提高了8.4J。复合材料内部的基体合金在高速粒子撞击下被严重挤压变形,在远离弹坑部位,基体合金变形减轻,缺陷以微裂纹和微孔洞为主。高强韧Ti纤维的加入起到了承载和吸能作用,有效减缓了基体合金的变形,并抑制了基体合金中绝热剪切带的形成。
A 2D-Tif / Al composites were fabricated by using two-dimensional braided TC4 fibers as reinforcements and the damage behavior of the composites under high-speed particle impact And the evolution of its organization. The results show that the damage of the 2D-Tif / Al composite target is mainly penetrated deeply and the cracked bulge or backside of the 2D-Tif / Al composite target plate appears slightly. Its high-speed impact resistance is better than that of the LF6 base alloy with the same thickness, The average energy absorption capacity than the base alloy increased 8.4J. The matrix alloy in the composite material was severely squeezed and deformed under the impact of high-speed particles. In the part far away from the crater, the deformation of the matrix alloy was alleviated, and the defects mainly consisted of micro-cracks and micropores. The addition of high tenacity Ti fibers plays a role of bearing and absorbing energy, effectively reducing the deformation of the matrix alloy and restraining the formation of adiabatic shear bands in the matrix alloy.