采用一种金相和RO-XRD相结合的方法,快速、准确地测定Mo-Nb合金单晶的晶向,并对晶向品质做出精确的表征。所测Mo合金单晶,其(111)晶面衍射角的测试值与计算值基本一致,其晶向偏离角分别为0.73o和0.91o,与电子背散射衍射法测试的结果一致,晶向分散度仅为1o左右。 Using a combination of metallographic and RO-XRD methods, the crystal orientation of Mo-Nb alloy single crystal can be determined rapidly and accurately, and the crystal orientation characterization can be accurately characterized. The measured values ​​of the diffraction angle of the (111) crystal face of the Mo alloy single crystal are basically the same as those of the calculated value, and the deviation angles are 0.73o and 0.91o, respectively, which are consistent with the results of the electron backscatter diffraction test. Dispersion is only about 1o.