对烧结钨板进行不同程度的轧制变形，变形量分别为25%、45%、77%、83%、88%，随后对轧制后板坯在1350℃退火60min，对其纵截面进行金相组织观察。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 sintered tungsten plate is subjected to different degrees of rolling deformation, and the deformation amounts are 25%, 45%, 77%, 83%, and 88% respectively. Then, the rolled slab is annealed at 1350℃ for 60 minutes, and its longitudinal section is gold-plated. Phase organization 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.