【摘要】 纳米晶材料（ｎａｎｏｓｔｒｕｃｔｕｒｅｄｍａｔｅｒｉａｌｓ）是近来发展起来的一种新型材料，其单个晶粒尺寸为纳米级，构成了一种与晶态和非晶态均不相同的新型结构，由此产生了许多独特的性能．本文综述了纳米晶材料的研究动态、介绍了纳米晶材料的制备、结构表征和性能研究的进展及纳米晶材料的发展动向。更多还原

【Abstract】 Nanostructured materials is a new kind of polycrystalline materials with nanometer sized grains and disordered interficial structures. Research and development of this kind of materials are reviwed in this paper. The prepartion and structures,as well as the properties for nanostructured materials are summarized. Finally,the promising future of the development of nanostructured materials are also discussed.更多还原