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《Powder Metallurgy Technology》 2008-04
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Research development of domestic densification of alumina dispersion strengthened copper composite

Li Zengde,Cui Shun,Liu Xuewen,Lin Chenguang,Li Ming,Li Xuejun(General Research Institute for Non-ferrous Metals,Beijing 100088,China)  
Alumina dispersion strengthened copper composite has many excellent properties.Hot extrusion,forging and cold working is the main densification process.The domestic research of the plastic deformation of the composite is reviewed in this paper.The study status of the densification technology of the composite is introduced in detail.Hot extrusion is the main production method.Extrusion method and extrusion process have great infuence on the properties.The major process of the large cross dimesions product is forging.The better properties of the composite can obtain after forging,which is under three axial compression stress state.Cold working is the critical step in the manufacturing procedure.The main effect of cold working is formation and improving mechanical property.Also the future development of the composite densification is presented.Theory study on this area shoud be enhanced,and the new densification technology would be developed.
【CateGory Index】: TB33
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