A cellular automaton model for austenite to ferrite transformation in carbon steel under non-equilibrium interface conditions
文献类型：期刊论文
| 作者 | Y. J. Lan ; D. Z. Li ; C. J. Huang ; Y. Y. Li |
| 刊名 | Modelling and Simulation in Materials Science and Engineering
 |
| 出版日期 | 2004 |
| 卷号 | 12期号:4页码:719-729 |
| 关键词 | fe-c alloys proeutectoid ferrite phase-transformation grain-refinement nucleation kinetics growth boundaries strip |
| ISSN号 | 0965-0393 |
| 中文摘要 | 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. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35394]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Y. J. Lan,D. Z. Li,C. J. Huang,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 | Y. J. Lan,D. Z. Li,C. J. Huang,&Y. Y. Li.(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 | Y. J. Lan,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. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。