利用粉末冶金法制得了板型规整的纯钼烧结坯，在Gleeble-1500型热模拟实验机上对纯钼板坯进行热压缩变形实验，变形温度为1100°C～1300 °C、变形速率为0.01～10 s^-1、真应变为0.3～0.6。将线切割得到的截面试样使用金相镶样机进行镶嵌，先用粗砂纸打磨至表面平整、无明显切割痕迹，然后使用不同粒度金相砂纸打磨、机械抛光至表面光洁无明显划痕。使用Murakami腐蚀剂（铁氰化钾：氢氧化钠：水为1:1:10）腐蚀60 s左右，腐蚀之后用酒精擦洗吹干，处理好的样品在光学显微镜。

A pure molybdenum sintered compact with a regular plate shape was prepared by powder metallurgy. The pure molybdenum slab was subjected to a thermal compression deformation experiment on the Gleeble-1500 thermal simulation test machine. The deformation temperature was 1100°C～1300°C, and the deformation rate was 0.01～ 10 s-1, the true strain is 0.3 to 0.6. The cross-section samples obtained by wire cutting are inlaid with a metallographic inlay machine, first polished with coarse sandpaper to a smooth surface without obvious cutting marks, and then polished with metallographic sandpaper of different grain sizes and mechanically polished to a smooth surface without obvious scratches. Use Murakami etchant (potassium ferricyanide: sodium hydroxide: water 1:1:10) to etch for about 60 s. After etching, use alcohol to scrub and blow dry, and the processed sample is placed in an optical microscope.