搅拌工艺对SiC_p/AZ31复合材料颗粒分布的影响  

Influence of Stirring Parameters on SiCp Distribution in SiC_p/AZ31 Composite

作　　者：汤孟欧[1] 张志峰[1] 徐骏[1] 杨必成[1] 刘国钧[1] 白月龙[1] 李豹[1] 

机构地区：[1]北京有色金属研究总院国家有色金属复合材料工程技术研究中心

出　　处：《特种铸造及有色合金》2013年第4期295-298,共4页Special Casting & Nonferrous Alloys

基　　金：中国国际科技合作计划项目(2009DFB50210);国家重点基础研究发展计划(973计划)资助项目(2011CB606302)

摘　　要：采用搅拌铸造法制备了SiCp/AZ31复合材料,研究了搅拌速度、搅拌时间对复合材料孔隙率和颗粒分布的影响。针对搅拌铸造工艺加入增强体含量有限的缺陷,研究了一种制备高SiCp含量AZ31镁基复合材料的分级搅拌工艺。结果表明,分级搅拌工艺制备的复合材料SiCp含量为25%,颗粒分布标准偏差小于0.1。The SiCp/AZ31 composites were prepared by stirring casting, and effects of stirring speed and stirring time on porosity and particle distribution in the composites prepared was investigated. The experimental results show that the process parameters, such as stirring speed, stirring time ,have a marked influence on the distribution of SiCp in MMC. A method called graded stirring is proposed to overcome the low reinforcement content. Magnesium matrix composites containing 25%SiC particles with standard distribution error lower than 0.1 can be prepared successfully by the graded stirring process.

关 键 词：颗粒增强 复合材料 搅拌铸造 分级搅拌 

分 类 号：TB331[一般工业技术—材料科学与工程]