Numerical simulation of microstructure for stir casting of Al-Si/SiC p composites with particle pushing model

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	Numerical simulation of microstructure for stir casting of Al-Si/SiC p composites with particle pushing model
	Li, B.1; Xu, Q.Y.1; Li, X.D.2; Liu, B.C.1
	2006
会议日期	May 28, 2006 - June 2, 2006
会议地点	Opio, France
关键词	Casting Heat transfer Mathematical models Metal castings Microstructure Particle size analysis Silicon carbide Composite microstructures Equiaxed dendrite growth Particle pushing model Stir casting
卷号	1
页码	569-576
英文摘要	Particle distribution has vital influence on the microstructure and the final performance of particle reinforced metal matrix composite. The formation of microstructure of SiC particle reinforced Al-7.0wt%Si composite made by stir casting was simulated in this paper. Two-dimensional models under normal solidification condition including macro heat transfer, nucleation, equiaxed dendrite growth and particle pushing were presented. A modified cellular automaton method coupled with finite difference method was used to simulate composite microstructure. The effects of SiC particle volume fraction on composite microstructure and particle distribution were analyzed. The simulated results can clearly show particle clustering phenomena caused by particle pushing. The final microstructure is in good agreement with the experimental results. With the increase of SiC particle volume fraction, composite matrix grains are refined and particles are distributed more uniformly.
会议录	Modeling of Casting, Welding and Advanced Solidification Processes - XI
会议录出版者	Minerals, Metals and Materials Society
语种	英语
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/117132]
专题	兰州理工大学
作者单位	1.Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China; 2.Lanzhou University of Science and Technology, Lanzhou, 730050, China
推荐引用方式 GB/T 7714	Li, B.,Xu, Q.Y.,Li, X.D.,et al. Numerical simulation of microstructure for stir casting of Al-Si/SiC p composites with particle pushing model[C]. 见:. Opio, France. May 28, 2006 - June 2, 2006.