纳米晶材料的组织和性能多晶材料的晶粒粒径减小到数ｎｍ时，即纳米晶材料，在其晶界上存在的原子的比例非常之高（＞５０％），同时在晶粒内含有的原子数仅有数千，而在传统材料中这种品内原子数要高达１０１６个左右。这样的纳米晶材料在性质上便产生了极为显著的变化，... Microstructure and Properties of Nanocrystalline Materials When the grain size of a polycrystalline material is reduced to several nanometers, the nanocrystalline material has a very high proportion (> 50%) of atoms present at its grain boundaries, Contains only thousands of atoms in the number of atoms in the traditional materials in this number up to 1016 or so. Such nanocrystalline materials in nature have produced a very significant change, ...