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Numerical Simulation of Dendritic Morphology of Magnesium Alloys Using Phase Field Method |
;;Baicheng LIU |
清华大学机械工程系 |
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Cite this article:
Baicheng LIU. Numerical Simulation of Dendritic Morphology of Magnesium Alloys Using Phase Field Method. Acta Metall Sin, 2008, 44(4): 483-488 .
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Abstract Due to Magnesium alloys with hcp crystal structure, we established the phase field model of dendritic growth in two dimensions. Using the model coupled with heat noise, we simulated the process of dendritic growth of Magnesium alloys. From simulation results, some phenomena of dendritic growth were found, such as necking and competitive growth, and there is a high consistency of dendritic morphologies between simulation and experiment. Meanwhile, we analyzed the influence of parameters on dendritic morphology.
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Received: 29 September 2007
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[1]Eiken J,Bernd B,Ingo S.Model Cast,Weld Adv Solidi- fication Processes,2006;Ⅺ:489 [2]Liu Z Y,Xu Q Y,Liu B C.Acta Metall Sin,2007;43:367 (刘志勇,许庆彦,柳百成.金属学报,2007;43:367) [3]Karma A,Rappel W J.Phys Rev,1998;57E:4323 [4]Karma A,Rappel W J.Phys Rev,1999;60E:3614 [5]Tong X,Beckermann C,Karma A.Model Cast,Weld Adv Solidification Processes,1998;Ⅷ:613 |
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