采用纯度为99.97%的高纯钨粉为原料，制备出相同规格的烧结钼板坯，分别在1200℃、1300℃、1400℃、1500℃温度下加热2小时，随后通过相同的一火多道次热轧工艺制备出热轧钼板，热轧钼板在1200℃/1h条件下进行再结晶退火处理，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。

Using high-purity tungsten powder with a purity of 99.97% as raw material, sintered molybdenum slabs of the same specifications were prepared, heated at 1200°C, 1300°C, 1400°C, and 1500°C for 2 hours, and then passed through the same fire and multiple passes. The hot-rolled molybdenum sheet was prepared by the secondary hot rolling process, and the hot-rolled molybdenum sheet was subjected to recrystallization annealing treatment at 1200℃/1h, and samples were taken for metallographic observation. 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.