采用纯度为99.95%的钼粉分别压制、烧结出钼板坯，烧结钼板坯经1400℃加热后，经多道次热轧至最终厚度，实际热轧变形量为66%。将热轧后的钼板在在1200℃退火不同时间后，对其纵截面的金相组织进行观察。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×进行金相组织观察。

Molybdenum slabs are separately pressed and sintered with molybdenum powder with a purity of 99.95%. After sintered molybdenum slabs are heated at 1400°C, they are hot-rolled to the final thickness through multiple passes. The actual hot-rolling deformation is 66%. After the hot-rolled molybdenum sheet was annealed at 1200°C for different times, the metallographic structure of its longitudinal section was observed. Metallographic structure collection scheme: 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 to observe the metallographic structure.