Radial Distribution of SiC Particles in Mechanical Stirring of A356-SiC_p Liquid

作     者：Yunhui Du Peng Zhang Jun Zhang Shasha Yao 

作者机构：School of Mechanical&Controlled EngineeringBeijing Jiaotong UniversityBeijing 100044China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2012年第28卷第10期

页      面：951-955页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：financially supported by the National Natural Science Foundation of China (No. 50974010) the Natural Science Foundation of Beijing, China (Nos.3093023 and 2102039) the Fundamental Research Funds for the Central Universities (No. 2009JBM091) 

主　　题：Radial distribution Straight-blade mechanical stirring Relationship 

摘      要：The mechanical stirring of A356-2.5 vol.% SiCp liquid was conducted in a cylindrical crucible by a straight-blade stirrer. The radial distribution of SiC particles in A356 liquid was studied under the conditions of 25 deg. for gradient angle α of blade and 10 mm/s for speed of moving up and down of stirrer, The results show that there exists a nonlinear relationship between rotating speed of stirrer and radial relative deviation of SiCp content in A356 liquid between the center and the periphery of crucible. The greater the rotating speed of stirrer is, the bigger the radial relative deviation of SiCp content in A356 liquid becomes and the more nonhomogeneous the radial distribution of SiC particles in A356 liquid turns. In addition, when the rotating speed of stirrer is about 200 r/min, the vertical distribution of SiC particles in A356 liquid is relative uniform. It can be seen that the nonhomogeneous distribution of SiC particles in A356 liquid results from the nonhomogeneous radial distribution of SiC particles in A356 liquid in straight-blade mechanical stirring ultimately.