挤压铸造SiC_p/LY12复合材料的组织与性能  

Research on the Microstructure and Properties of SiC_p/LY12 Composite Prepared by Liquid - Solid Extrusion Process

作　　者：齐乐华[1] 李贺军[1] 孙乐民[1] 

机构地区：[1]西北工业大学

出　　处：《特种铸造及有色合金》2001年第S1期142-144,共3页Special Casting & Nonferrous Alloys

基　　金：航空基金资助项目(99G53087)

摘　　要：探讨了挤压铸造SiCp/LY12复合材料的组织与性能特征及其相互之间的关系。研究表明,其基体组织晶粒细小, SiC颗粒基本呈均匀随机分布,无明显堆积及脱粘现象,且与基体结合良好。抗拉强度和弹性模量比基体材料分别提高 20％～32％和7.6％～43％,从而为颗粒增强金属基复合材料管、棒材的制备提供了一种减少工序,节能节材的可行方法。The characteristics of micristructure and properties of SiCp/LY12 composite prepared by liquid-solid extrusion process and their mutual relation were discussed in the paper. The results show that the grains of matrix is fine and SiC particles distribute well and random. There exists no collection of SiC particles. The bonding among the particles and matrix is strong. Compared with the matrix alloy, the tensile strength and elastic modulus increase separately to 20 - 32% and 7.6 - 43% .These results proved t...

关 键 词：液固挤压 组织特征 SICP/LY12复合材料 

分 类 号：TB333[一般工业技术—材料科学与工程]