内氧化法制备Al_2O_3弥散强化铜合金及其组织与性能  

Al_2O_3 Dispersion Strengthened Copper Alloy Produced through Internal Oxidation and its Microstructure and Property

作　　者：岳灿甫[1] 王永朝[1] 郭海霞[1] 雷竹芳[1] 陈会东[1] 

机构地区：[1]洛阳船舶材料研究所,河南洛阳471039

出　　处：《材料开发与应用》2007年第4期7-10,共4页Development and Application of Materials

摘　　要：采用内氧化法用雾化铜铝合金粉制备出了铝含量（质量分数）分别为0.15%、0.25%、0.35%的3种氧化铝弥散强化铜合金.研究了Al2O3弥散强化铜合金的组织与性能.结果表明,弥散铜合金的晶粒细小,晶粒大小在0.2～1μm之间;内氧化工艺生成的细小氧化铝质点在晶粒内部呈弥散分布,其平均直径小于20nm.0.35%Al含量的弥散强化铜合金抗拉强度为600MPa,电导率为83%IACS,满足了CuCrZr电阻焊电极的要求,可以作为CuCrZr电阻焊电极的替代材料.Series of aluminum oxide dispersion strengthened copper alloy （ODSC） containing 0.15%,0.25% and 0.35% Al （wt%） are produced from atomized Cu-Al powder through internal oxidation. Tensile strength and conductivity of the copper alloy with 0.35 % Al are 600 MPa, 83 % IACS respectively, meeting the requirement for electrode in resistance welding, as a substitute for CuCrZr electrode. The rnicrostructure and property of the alloy is researched. The result shows that the grain of the ODSC alloy is very small with a size between 0.2- 1.0μm. The fine Al203 particle is distributed dispersedly in grains. Its average diameter is less than 20 nanometer.

关 键 词：内氧化 弥散强化 纳米Al2O3质点 弥散铜 

分 类 号：TB331[一般工业技术—材料科学与工程]