相邻两晶粒间的位向关系是描述晶界几何结构的重要参数之一。目前,主要的实验方法是:X射线衍射法,电子衍射法,菊池花样法等几种。应用这些方法所得的结果,再结合数学上求矩阵的方法,就可确定两晶粒间的位向差、回转轴和晶界面的位向关系等。 The orientation relationship between two adjacent grains is one of the important parameters to describe the grain boundary geometry. At present, the main experimental methods are: X-ray diffraction, electron diffraction, Kikuchi tricks and so on. Applying the results obtained from these methods, combined with the mathematically calculated matrix method, we can determine the orientation difference between the two grains, the orientation relationship between the rotation axis and the grain boundary interface, and so on.