Ni-Al纳米全金属含能结构材料的冲击烧结机理研究

含能结构材料兼具高强度与反应活性，在军事领域有广泛用途。如何在保持反应活性的同时，提高材料的强度和反应释能效率，是一个亟待解决的问题。纳米全金属含能结构材料，兼具纳米金属的优良力学性能和微秒级的反应速率，极具研究价值。项目提出通过爆炸烧结的方法制备Ni-Al纳米金属含能结构材料，开展纳米粉末冲击压缩行为研究，解决裂纹问题;利用分子动力学模拟从微观角度揭示纳米粉末烧结机理;制备出高致密纳米金属含能结构材料并系统表征其显微组织与力学性能。项目研究有助于加深对纳米金属材料结构-性能关系的理解，对含能结构材料的应用和块体纳米金属的制备具有重要的意义。

Energetic structural materials (ESM) are a relatively new group of materials designed to have structural strength and chemical reactivity, having broad application potentials in weaponry. How to improve the strength and reaction efficiency of ESM while sustaining its reactivity is becoming a key issue for its future application. Nanostructured energetic structural material, possessing the excellent mechanical properties of nanostructured metal and extreme rapid reaction rate in microseconds, is of great research value. In this project, the fabrication of nanostructured Ni-Al ESM by explosive consolidation was proposed. The crack problem due to the shock loading is expected to be solved based on the investigation on shock compression of nano-powders. The Molecular dynamics will be carried out to study the consolidation mechanism of nano-powders at micro-scale. The fully dense nanostructured Ni-Al ESM will be fabricated and systematic investigations on its mechanical performance and the microstructure will be conducted. It is believed that this project will lead to an understanding in depth of the relationship between the microstructure and performance for the nanostructured materials. The research in this project is also important for the application of ESM and the fabrication of bulk nanostructured