指第一个图绘制的维氏硬度值与厚度减少的百分比,它可以表明,4种不同的退

Refers to the percentage of the first drawing and the Vickers hardness of reduced thickness, it can show four different annealing temperatures, their values ​​are displayed in the same trend, with hardness values ​​of the percentage of the thickness of copper to reduce the number of cold or . This result is consistent with the theory, i.e., the tissue in cold plastic deformation recrystallization temperature or less, the hardness of the tissue increases, so the more cold work, the higher the hardness. However, at 300 ° C, 50% reduction in thickness, there have been some changes.

Referring to the percentage of Vickers hardness value and thickness reduction drawn in the first graph, it can indicate that there are four different annealing temperatures, the values they show are the same trend, and the hardness value decreases with the percentage of thickness as the amount of copper or cold processing. This result is consistent with the theory that cold processing causes the tissue to undergo plastic deformation below the recrystallization temperature, increasing the tissue hardness, so that the more cold processing, the higher the hardness. However, at 300 degrees C, the thickness is reduced by 50%, and some changes have taken place.

The percentage of Vickers hardness and thickness reduction drawn in the first chart can indicate that the values of four different annealing temperatures show the same trend, and the hardness decreases with the percentage of thickness as the amount of copper or cold working. This result is consistent with the theory, that is, cold working causes plastic deformation of the structure below the recrystallization temperature and increases the hardness of the structure. Therefore, the more cold working, the higher the hardness. However, at 300 C, the thickness decreases by 50%, and some changes occur.<br>