从图中以及微观结构可以看出，金属铜的再结晶温度在200度左右。此外，可

And the microstructure can be seen from the figure, the recrystallization temperature of copper is around 200 degrees. Further, the recrystallization temperature can be observed as the degree of cold work increases with decreasing trend, which is observed by the grain size, grain size increases with the degree of cold work increases. This is because the higher the degree of cold work, the more severe the deformation of the grains, and therefore less energy to start copper microstructure transformation required.

From the figure and the microstructure, it can be seen that the recrystallization temperature of metal copper is about 200 degrees. In addition, the tendency of recrystallization temperature to decrease with the increase of cold processing, which is observed by the grain size, which decreases with the increase of the degree of cold processing. This is due to the higher the degree of cold work, the more serious the grain deformation, so the less heat is required to initiate the microstructure transformation of metal and copper.

The recrystallization temperature of copper is about 200 degrees from the figure and the microstructure. In addition, it can be observed that the recrystallization temperature decreases with the increase of cold working degree, which is observed by grain size, and grain size decreases with the increase of cold working degree. This is because the higher the degree of cold work, the more serious the grain deformation, so the less heat energy is needed to start the microstructural transformation of copper.<br>