在这个实验中，我们也使用了退火或热处理工艺。通常，金属经过退火处理会使

In this experiment, we used the annealing or heat treatment process. Typically, the metal will be annealed to soften. Therefore, through this process, you can improve the ductility. If the cold metal reheated to a high temperature and a long period of time, it would be a series of tissue changes, we usually call recovery, recrystallization and grain growth. Cold metal structural change as shown below:

In this experiment, we also used annealing or heat treatment techniques. Usually, the metal is annealed to soften it. Therefore, through this process, the ductility can be improved. If cold metal is reheated to a very high temperature, and over a long period of time, its tissue will change a series of changes, which we often call recovery, recrystallization, and grain growth. The structural changes in the cold-processed metal are shown in the following figure:

In this experiment, we also used annealing or heat treatment process. Generally, metals are softened by annealing. Therefore, through this process, ductility can be improved. If the cold metal is reheated to a high temperature, and over a long period of time, its structure will undergo a series of changes, which we usually call recovery, recrystallization and grain growth. The structural changes of cold-worked metals are shown in the following figure:<br>