Simulation of mold filling under counter gravity for A356 alloy and A356/SiCp composite

被引：13
|
作者：
Zeng, Jianmin [1 ]
Gu, Ping [1 ]
Zou, Yongzhi [2 ]
Xu, Zhengbing [2 ]
机构：
[1] Guangxi Univ, Key Lab Nonferrous Mat & New Proc Technol, Nanning 530004, Peoples R China
[2] NW Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2009年 / 499卷 / 1-2期
关键词：
A356/SiCp composites; Counter gravity casting; Simulation;
D O I：
10.1016/j.msea.2007.11.147
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Dynamic characteristics of mold filling under counter gravity for A356 alloy and A356/SiCp composites are compared and analyzed. It is pointed out that there exists much difference in fluidity and flow morphology between A356 alloy and the composites due to the difference in viscosity and equivalent solidification latent. The mold filling under counter gravity can be described by a second-order nonlinear equation characterized by damping oscillations. Composite flows steadier than the matrix alloy during mold filling, and the temperature field resulting from mold filling is more beneficial to directional solidification. (c) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：130 / 133
页数：4
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