研究了不同类型钛及钛合金金相试样的制备方法，确定了不同类型钛及钛合金金相试样的切割、磨制、抛光以及浸蚀等的工艺参数。结果表明：钛及钛合金金相试样的切割可采用超薄的金刚石切割片或粒度为180目的砂轮切割片，切割转速为150~250 r·min^-1，进给速率为0. 5 mm·min^-1；针对不同类型钛合金，采用“一磨两抛”、“两磨一抛”三步法工艺或“两磨两抛”四步法工艺后，采用经反复试验确定的不同体积比的氢氟酸、硝酸和蒸馏水组成的浸蚀剂擦蚀，即可得到符合检验要求的高质量金相试样，大幅度提高了钛及钛合金金相试样的制备效率。

The preparation methods of metallographic samples of different types of titanium and titanium alloys were studied, and the process parameters of cutting, grinding, polishing and etching of different types of titanium and titanium alloys metallographic samples were determined. The results show that the metallographic samples of titanium and titanium alloys could cutted with ultra-thin diamond cutting sheet or 180 mesh grinding wheel cutting sheet, the cutting speed was 150~250 r·min^-1 and the feed rate was 0. 5 mm·min^-1. For different types of titanium alloys, applying the three-step process of "one grinding and two polishing", "two grinding and one polishing" or the four-step process of "two grinding and two polishing", and then applying the etching agent composed of hydrofluoric acid, nitric acid and distilled water with different volume ratios determined by repeated tests, the high-quality metallographic samples that meet the inspection requirements could be obtained, which greatly improved the metallographic sample preparation efficiency of titanium and titanium alloys.