根据电子衍射花样的矩阵分析和对有序结构δ相的结构振幅的分析计算,确认了Ni-Fe-Cr-Nb合金晶内魏氏体状δ相具有Kirman等人所指出的取向关系和形成机理,某些晶界胞状δ相不具有那种取向关系,而且具有不完全固定的某些取向关系,发现某些胞状δ相中的Ni,Nb原子可能不完全有序分布。
According to the matrix analysis of electron diffraction patterns and to the analysis and calculation of structure amplitude for ordered structure δ-phase, the confirmation was made of that the δ-phase of the Widmanst(?)tten structure in Ni-Fe-Cr-Nb alloy grain is identical with the orientation relationship and formation mechanism shown by Ⅰ. Kirman and others. But certain δ-phase of cellular structure does not have such relationship and there is yet some imperfectly regular ones. It was also found that the Ni and Nb atoms may be imperfectly distributed in order within some cellular δ-phase.
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