|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Mechanical Behavior at the Nanoscale III
||W-25: The Microstructure and Mechanical Properties of Nanometer Al2O3/Cu Composite Fabricated by Internal Oxidation
||Lei Guo, Shuqiang Guo, Shuai Ma, Jie Liu, Weizhong Ding
|On-Site Speaker (Planned)
The fabrication of the copper matrix composites strengthened with dispersal nanometer Al2O3 is investigated. The investigation result shows that the atomized Cu-Al alloys powders mixed with Cu2O oxidant powders were internally oxidized at 1173K for an hour in nitrogen atmosphere. X-ray and EDS analysis indicates that the particles formed during internal oxidation consist of a large amount of CuAlO2 and a certain amount of α-Al2O3. After hydrogen reduction at 1173K for an hour, the particles turn to be α-Al2O3. TEM observation shows that the obtained α-Al2O3particles are uniformly distributed in copper grain, and the mean size of these particles is about 10 nm. As compared with the composite by a previous sintering, the main properties of the composite with 50% cold deformation are better.
||Planned: A print-only volume