A cellular automaton model for austenite to ferrite transformation in carbon steel under non-equilibrium interface conditions

doi:10.1088/0965-0393/12/4/012

IMR OpenIR

	A cellular automaton model for austenite to ferrite transformation in carbon steel under non-equilibrium interface conditions
	Lan, YJ; Li, DZ; Huang, CJ; Li, YY
通讯作者	Lan, YJ(yjlan@imr.ac.cn)
	2004-07-01
发表期刊	MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING
ISSN	0965-0393
卷号	12 期号:4 页码:719-729
摘要	The isothermal decomposition of austenite into ferrite is investigated using a two-dimensional cellular automaton (CA) algorithm. This CA model provides a simple solution for the difficult moving boundary problem that governs the ferrite grain growth. In this model, the growth of ferrite grains is controlled by both the austenite-ferrite (gamma-alpha) interface mobility and the carbon diffusion in the retained austenite. The competition between the gamma-alpha interface dynamics and the carbon diffusion in the austenite results in a non-equilibrium gamma-alpha interface condition. In order to predict the growth kinetics of ferrite grains, the carbon diffusion coupled with the gamma-alpha interface dynamics is resolved numerically. The driving force for the gamma-alpha interface mobility is calculated using a regular solute sub-lattice model. The kinetics of ferrite transformation predicted by this CA method is compared with that of a JMA model and experiments in the literature. The simulation provides an insight into the carbon diffusion in austenite and the microstructure evolution during transformation. Meanwhile, the results also show that the gamma-alpha interface under the present nonequilibrium condition is numerically stable in two dimensions and the simulated morphology of the ferrite grains is an almost equiaxed polygon.
DOI	10.1088/0965-0393/12/4/012
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000222671000013
出版者	IOP PUBLISHING LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/80789
通讯作者	Lan, YJ
作者单位	Chinese Acad Sci, Inst Met Res, Lab Special Environm Mat, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Lan, YJ,Li, DZ,Huang, CJ,et al. A cellular automaton model for austenite to ferrite transformation in carbon steel under non-equilibrium interface conditions[J]. MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING,2004,12(4):719-729.
APA	Lan, YJ,Li, DZ,Huang, CJ,&Li, YY.(2004).A cellular automaton model for austenite to ferrite transformation in carbon steel under non-equilibrium interface conditions.MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING,12(4),719-729.
MLA	Lan, YJ,et al."A cellular automaton model for austenite to ferrite transformation in carbon steel under non-equilibrium interface conditions".MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING 12.4(2004):719-729.