粉末冶金技术2012，Vol.30Issue(4)：260-265,6.
微量合金元素添加对Al2O3弥散强化Cu微观组织和硬度的影响研究
Effect of trace alloying elements addition on microstructure and hardness of alumina dispersion strengthened copper alloys
摘要
Abstract
Dispersion strengthened copper alloys (DSC) with high strength and high conductivity find a wide range of applications in automobile and electronics industry. Cu-Al2O3 powder with various alloy elements was synthesized by high-energy ball milling. XRD results show that the high-energy ball milling can effectively dissolve A12O3 and alloy elements into Cu matrix. Hardness tests results show that the addition of Ag significantly improves the hardness of Cu alloys, and while Ni and Hf addition improves the hardness in certain extent. In contrast, addition of Zr and Ti has little effect on it. It is found that the improving hardness of DSC with Ag addition is closely related to inhibition of the growth of alumina panicles during sintering. Our findings show that a small amount of alloy element in copper matrix can play an important role in improving the hardness of DSC.关键词
弥散强化Cu/合金元素/硬度/界面偏聚Key words
dispersion strengthened copper/ alloy elements/ hardness/ interface segregation引用本文复制引用
肖勇,刘绍军,武建,曲选辉..微量合金元素添加对Al2O3弥散强化Cu微观组织和硬度的影响研究[J].粉末冶金技术,2012,30(4):260-265,6.基金项目
广东省省部产学研重点项目(2011B090400552) （2011B090400552）
新金属材料国家重点实验室开发基金项目(2008Z-04) （2008Z-04）
