通过分析晶界腐蚀的机理，选择不同的侵蚀剂、侵蚀温度和侵蚀时间，对调质处理后的ZG25MnF8钢进行了侵蚀试验，研究了显示其组织原奥氏体晶界的方法，并对显示调质组织原奥氏体晶界的影响因素进行了分析。结果表明: 当侵蚀剂为3.3 g苦味酸+1.0 g十二烷基苯磺酸钠+95 mL蒸馏水（80 ℃），侵蚀温度和时间为42 ℃×1 min，20 ℃×5 min或20 ℃×7 min时，可很好地显示出ZG25MnF8钢的原奥氏体晶界。

Based on the corrosion mechanism of grain boundary, corrosion tests were carried out on the conditioning ZG25MnF8 steel under different corrosive solution, corrosive temperature and corrosive time. The method and the influence factors of displaying the original austenite grain were researched. The results show that the grain boundary of ZG25MnF8 steel could be easily distinguished when the corrosive solution was made up of picric acid (3.3 g), sodium dodecyl benzene sulfonate (1.0 g) and distilled water (95 mL, 80 ℃), and the corrosion temperature and time were 42 ℃×1 min, 20 ℃×5 min and 20 ℃×7 min.