高能超声作用下SiC_p/ZA27复合材料的制备及性能  

Preparation of SiC_p/ZA27 Composites Using High-intensity Ultrasound and Their Properties

作　　者：潘蕾[1] 陈锋[1] 吴申庆[1] 王俊[2] 

机构地区：[1]东南大学材料科学与工程系,江苏南京210096 [2]上海交通大学材料科学与工程学院,上海200030

出　　处：《铸造》2003年第4期235-238,共4页Foundry

基　　金：国家自然科学基金资助项目(No.59971017和No.50101005)。

摘　　要：在高能超声作用下制备了颗粒均匀、弥散分布、组织结合紧密、性能良好的SiCp/ZA27复合材料,SiC颗粒粒径最小可达0 5μm。增加颗粒含量对复合材料性能影响较为显著,而颗粒尺寸变化对复合材料性能影响不大。复合材料的强化机制是位错强化与其他强化机制共同作用的结果。SiCp/ZA27 composites were successfully prepared using highintensity ultrasonic, which had compact structure, homogeneous particles distribution and better mechanical properties than ZA27 alloy.The smallest diameter of the SiC particle dispersed was 05μm.It was found that the mechanical properties of the composites mainly depended on the volume fraction of SiC particles;The diameter of the particles only had a minor influence on the mechanical properties.The strengthening mechanism of the composites was due to the dislocation strengthening and other strengthening mechanisms.

关 键 词：高能超声 SICP/ZA27复合材料 力学性能 强化机制 制备 

分 类 号：TB333[一般工业技术—材料科学与工程]