冷轧多晶铜与多晶铝形变显微组织演变的研究

Microstructure evolution in aluminum and copper deformed by cold rolling

采用TEM对冷轧多晶铜与多晶铝的形变显微组织演变进行了对比研究 .结果发现 :多晶铜及多晶铝形变显微组织中均含有三类典型的位错结构类型 ,其中的两种结构特征在两种材料中是相似的 ,这两种类型结构存在于非立方取向晶粒 ,可通过晶粒中位错边界的晶体学取向加以区别 ,另一类型结构存在于立方取向晶粒 ;晶粒的晶体学取向决定了其形变显微组织类型 ,但其它冶金学因素对显微组织也有影响 .

Presents the microstructure evolution in aluminum and copper after deformation by cold rolling in the strain range of 10 to 50% reduction using TEM and points out three types of dislocation structures are typical and two of them are common for both materials and these two common types are found in non cube grains and can be distinguished by crystallographic orientation of dislocation boundaries in the grains and the third type of structure is observed in cube grains, and concludes that grain orientation is important in determining the structure type but some other metallurgical parameters also have a role to play.