Tian Baohong, Xia Chengdong, Liu Yong, et al. Effects of Hot Extrusion on Microstructure and Properties of Cu-Al2O3 Composites Prepared by Simplified Internal Oxidation. [J]. Special Casting & Nonferrous Alloys (3):199-201(2008)
Tian Baohong, Xia Chengdong, Liu Yong, et al. Effects of Hot Extrusion on Microstructure and Properties of Cu-Al2O3 Composites Prepared by Simplified Internal Oxidation. [J]. Special Casting & Nonferrous Alloys (3):199-201(2008)DOI:
Effects of Hot Extrusion on Microstructure and Properties of Cu-Al2O3 Composites Prepared by Simplified Internal Oxidation
The Cu-Al2O3 composites were prepared by a simplified internal oxidation method combining with hot extrusion.Effects of hot extrusion on microstructure
hardness
tensile strength and electric conductivity of the composites have been examined.The results show that the microstructure of the hot extruded composites can be refined with more homogeneous.The pore defects in the composites are decreased
which leads to the densification of the composites with density of 8.82 g/cm3.The hardness
tensile strength and electric conductivity of the hot extruded composites reach up to 111HV
242 MPa
41.76 S/m
respectively.The fracture morphology observation reveals that the fractures of both sintered and hot extruded composites are characterized by dimple aggregation crack
in which the hot extrusion can improve the ductility of sintered composites.
School of Materials Science and Engineering,Henan University of Science and Technology
Hubei Provincial Key Laboratory of Chemical Equipment Intensification and Intrinsic Safety, School of Mechanical and Electrical Engineering, Wuhan Institute of Technology
State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology
School of Materials Science and Engineering,University of Science andTechnology Beijing
Chinalco Guangxi Nonferrous Rare Earth Development Co., Ltd.