使用H-700TEM的双倾样品台,以μ相的100(即a~*)为倾转轴,绕a~*连续倾转得到一系列(01)~*衍射图,以及由此绘制的μ相倒易点阵。h00点列中h≠3n(n=0,±1,±2……)的100、200等斑点在倾转过程中始终存在,01L、11L点列的L=0,±1,±2……可以连续出现,无系统消光。根据这种衍射规律,GH302合金析出的μ相为P6点阵。它可能是{001}堆垛层错形成的一种缺陷结构。 A series of (01) ~ * diffraction patterns were obtained by continuously tilting around a * with a 100-phase (ie, a *) phase of the μ phase using a dual tilt stage of an H-700 TEM and a μ phase Easy bit lattice. 100,200 spots of h ≠ 3n (n = 0, ± 1, ± 2, ...) in h00 point column always exist during tilting, and L = 0, ± 1, ± 2 ... can appear continuously, without system extinction. According to this law of diffraction, the precipitated μ phase of GH302 alloy is P6 lattice. It may be a defect structure formed by stacking faults.