分别在1200℃、1350℃、1500℃下对1300℃热轧的钼板进行再结晶退火处理，退火后取样进行金相组织观察。金相组织采集方案：试样经过机械磨削和抛光成平整、光亮、无磨痕或抛光划痕的镜面，采用10-20%的氢氧化钠+铁氰化钾混合液（氢氧化钠与铁氰化钾质量比为1:1）对样品进行腐蚀，腐蚀后的样品在金相显微镜下放大100×或200×进行组织观察。

The molybdenum sheets hot-rolled at 1300°C were subjected to recrystallization annealing treatment at 1200°C, 1350°C, and 1500°C, respectively, and samples were taken for metallographic observation after annealing. Metallographic structure collection plan: The sample is mechanically ground and polished into a smooth, bright, and non-abrasive or polished mirror surface, using a 10-20% sodium hydroxide + potassium ferricyanide mixture (sodium hydroxide and potassium ferricyanide) The mass ratio of potassium ferricyanide is 1:1) The sample is corroded, and the corroded sample is magnified 100× or 200× under a metallurgical microscope for organization observation.