Microstructure and properties of Cu-Al alloy sheet after internal oxidation

作者：Su Fan-Fan; Zhang Dan-Wen; Zhao Dong-Mei; Ren Feng-Zhang; Tian Bao-Hong; Jia Shu-Guo

来源：Transactions of Materials and Heat Treatment, 2009, 30(2): 101-104.

• Cu-Al alloys
• Density of dislocation
• Dispersion strengthened
• Electrical conductivity
• Grain size
• Microstructure and properties
• Surface layers

Al2O3/u composites were prepared by internal oxidation of Cu-Al alloy. The microstructure, microhardness and electrical conductivity of the Al2O3/Cu composites prepared with different internal oxidation time and deformation were examined. The results show that Al2O3nano-particles disperse in the Al2O3/Cu composites after internal oxidation of Cu-Al alloy. The sizes of grains are obviously different in surface layer compared with inside, the grain size of surface layer is smaller (about 10~30μm). With increasing of deformation, density of dislocations increases in the Al2O3/Cu sheets. Al2O3/Cu composites prepared by internal oxidation of Cu-Al alloy at 900°C have excellent electrical conductivity and high microhardness.

• 出版日期2009
• 单位河南大学