Simulation of Microstructure during Laser Rapid Forming Solidification Based on Cellular Automaton

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	Simulation of Microstructure during Laser Rapid Forming Solidification Based on Cellular Automaton
	Z. J. Wang; S. Luo; H. W. Song; W. D. Deng; W. Y. Li
	2014
发表期刊	Mathematical Problems in Engineering
ISSN	1024-123X
摘要	The grain microstructure of molten pool during the solidification of TC4 titanium alloy in the single point laser cladding was investigated based on the CAFE model which is the cellular automaton (CA) coupled with the finite element (FE) method. The correct temperature field is the prerequisite for simulating the grain microstructure during the solidification of the molten pool. The model solves the energy equation by the FE method to simulate the temperature distribution in the molten pool of the single point laser cladding. Based on the temperature field, the solidification microstructure of the molten pool is also simulated with the CAFE method. The results show that the maximum temperature in the molten pool increases with the laser power and the scanning rate. The laser power has a larger influence on the temperature distribution of the molten pool than the scanning rate. During the solidification of the molten pool, the heat at the bottom of the molten pool transfers faster than that at the top of the molten pool. The grains rapidly grow into the molten pool, and then the columnar crystals are formed. This study has a very important significance for improving the quality of the structure parts manufactured through the laser cladding forming.
部门归属	[wang, zhi-jian ; luo, shuai ; deng, wei-dong ; li, wen-yi] shenyang aerosp univ, sch mechatron engn, shenyang 110136, liaoning, peoples r china. [song, hong-wu] chinese acad sci, inst met res, shenyang 110016, liaoning, peoples r china. ; wang, zj (reprint author), shenyang aerosp univ, sch mechatron engn, shenyang 110136, liaoning, peoples r china. ; wangzhijian1974@sina.com
关键词	Prediction
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73436
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. J. Wang,S. Luo,H. W. Song,et al. Simulation of Microstructure during Laser Rapid Forming Solidification Based on Cellular Automaton[J]. Mathematical Problems in Engineering,2014.
APA	Z. J. Wang,S. Luo,H. W. Song,W. D. Deng,&W. Y. Li.(2014).Simulation of Microstructure during Laser Rapid Forming Solidification Based on Cellular Automaton.Mathematical Problems in Engineering.
MLA	Z. J. Wang,et al."Simulation of Microstructure during Laser Rapid Forming Solidification Based on Cellular Automaton".Mathematical Problems in Engineering (2014).