晶体取向分布函数(ODF)几乎是描述多晶材料织构的最适宜的方式,其晶粒取向是用一组 Euler 角{(?)、θ、(?)}(Roe)表示的。由于存在 Friedel 定律,按级数展开法由几张极图得到的 ODF 仅为简化的或不完整的 ODF。最近几年来发展的最大熵法是一种确定完整 ODF 及真反极图的有效的方法,其结果的可靠性 The crystal orientation distribution function (ODF) is almost the most suitable way to describe the texture of polycrystalline materials. The grain orientation is expressed by a set of Euler angles (θ, θ, ()) (Roe). Due to the Friedel’s law, the ODF obtained from several polar graphs by the series expansion method is only a simplified or incomplete ODF. The maximum entropy method developed in recent years is an effective method to determine the complete ODF and true antipolice graph. The reliability of the result