离心铸造法制备陶瓷颗粒增强Al合金基功能梯度复合管  

CERAMIC PARTICLES REINFORCED ALUMINUM ALLOY MATRIX FUNCTIONALLY GRADED COMPOSITE TUBE MANUFACTURED BY CENTRIFUGAL CASTING

作　　者：秦孝华[1] 韩维新[1] 范存淦[1] 戎利建[1] 李依依 

机构地区：[1]中国科学院金属研究所,沈阳110016

出　　处：《金属学报》2001年第10期1117-1120,共4页Acta Metallurgica Sinica

摘　　要：利用熔融Ａｌ合金基体与颗粒增强相（ＳｉＣ及 Ａｌ２Ｏ３颗粒）在离心铸造条件下所受的离心力的不同，再通过调整其 它的工艺参数，利用水平式离心铸造机制备了３种具有不同强化部位（外层强化、内层强化以及内外层同时强化）的功能梯度复合 管．颗粒的３种分布方式使复合管的微观组织及显微硬度呈现了相应的梯度变化．强化部位的多样化可为功能梯度复合管的应用 开辟新的领域.Three kinds of aluminum alloy matrix functionally graded composite (FGC) tube reinforced by SiC or Al2O3 particles were manufactured by centrifugal casting method, which corresponded respectively to the particle-rich zones appearing in outer periphery, inner periphery and both of them. The later two kinds of tubes with non-general particle-rich distribution can be obtainded by adjusting technological parameters. The above particle graded distributions result in a graded distribution of the microstructure and microhardness. The variety of the distribution of particle-rich zones in FGC tube makes it possible to be applied in new areas.

关 键 词：离心铸造 功能梯度复合管 复合材料 铝基 陶瓷颗粒增强 

分 类 号：TB333[一般工业技术—材料科学与工程] TG249.4[金属学及工艺—铸造]