Phase--field model of isothermal solidification with multiple grains growth
Feng Li(冯力)a)†, Wang Zhi-Ping(王智平)a)b), Zhu Chang-Sheng(朱昌盛)a), and Lu Yang(路阳)a)
a College of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China; b State Key Laboratory of Gansu Advanced Nonferrous Metal Material, Lanzhou University of Technology, Lanzhou 730050, China
Abstract This paper develops a new phase--field model for equiaxed dendrite growth of multiple grains in multicomponent alloys based on the Ginzberg--Landau theory and phase--field model of a single grain. Taking Al--Cu and Al--Cu--Mg alloys for example, it couples the concentration field and simulates the dendrite growth process of multiple grains during isothermal solidification. The result of the simulation shows dendrite competitive growth of multiple grains, and is reapplied to the process of dendrite growth in practical solidification.
Received: 08 October 2008
Revised: 06 November 2008
Accepted manuscript online:
(Whiskers and dendrites (growth, structure, and nonelectronic properties))
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 50804019) and
Foundation for Doctoral Program of the Ministry of Education of
China (Grant No 20070731001).
Cite this article:
Feng Li(冯力), Wang Zhi-Ping(王智平), Zhu Chang-Sheng(朱昌盛), and Lu Yang(路阳) Phase--field model of isothermal solidification with multiple grains growth 2009 Chin. Phys. B 18 1985
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