粉末冶金技术2011，Vol.29Issue(3)：214-217,231,5.
内氧化法制备纳米Al2O3弥散铜复合材料的研究
Study on nanometer Al2O3 dispersion-strengthened copper composites fabricated by internal oxidation method
李美霞 1罗骥 2郭志猛2
作者信息
- 1. 河北工程大学，河北邯郸056038
- 2. 北京科技大学材料科学与工程学院，北京100083
- 折叠
摘要
Abstract
With water atomized Cu-Al alloy powder as raw materials in this paper, A12O3 dispersion-strengthened copper composites were fabricated by internal oxidation method. The results show that; γ-Al2O3 particles are homogeneously distributed in the matrix grain, diameter is about 6nm , distance between these particles 30 ~ 50nm; there exist uniform and continuous fibrous structures for hot extruded bar φ25 mm with 99. 8 % cold drawing reductions, the ratio of length to width of the fiber is bigger than 20, tensile strength 680MPa; hot extruded bar electrical conductivities is 87% , and softening point 850℃ , the overall performance reach the advanced level in the world.关键词
内氧化；弥散强化铜；大塑性变形；抗拉强度Key words
internal oxidation/ dispersion strengthened copper/ big plastic deformation/ tensile strength引用本文复制引用
李美霞,罗骥,郭志猛..内氧化法制备纳米Al2O3弥散铜复合材料的研究[J].粉末冶金技术,2011,29(3):214-217,231,5.
