采用不同氧含量的室温疲劳性能测试后失效试样为研究对象，通过机加工线切割切取断口纵截面约 1mm 厚的薄片，对薄片样品表面进行机械研磨和机械抛光，随后电解抛光，电解抛光液成分为20vol.%H₂SO₄+80vol.%CH₃OH。HIP态试样电抛电压为 15V、时间为 5s，进行电解抛光。通过EDAX配置的电子背散射衍射（EBSD）进行测量。

The failure sample after fatigue performance test at room temperature with different oxygen content was adopted as the research object. Thin slices with longitudinal section of about 1mm thick were cut by machining wire cutting, and the surface of thin slices was mechanically ground and mechanically polished, followed by electrolytic polishing. The electrolytic polishing liquid composition was 20vol.%H2SO4+80vol.%CH3OH. The HIP samples were electropolished at 15V and 5s. The measurements were made by electron backscatter diffraction (EBSD) in the EDAX configuration.