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| 静态再结晶过程的元胞自动机模拟(Ⅰ)——微观组织演化和动力学研究 | |
| 引用本文： | 郭娟,王艳敏,李卫,吴迪,赵宪明.静态再结晶过程的元胞自动机模拟(Ⅰ)——微观组织演化和动力学研究[J].大型铸锻件,2009(1). |
| 作者姓名： | 郭娟 王艳敏 李卫 吴迪 赵宪明 |
| 作者单位： | 1. 东北大学轧制及连轧自动化国家重点实验室,辽宁,110004 2. 洛阳理工学院,河南,471000 3. 中船重工第725研究所,河南,471000 |
| 摘 要： | 采用正六边形网格划分法、最近邻邻居关系及周期性边界条件的二维元胞自动机(CA)法,建立了热加工过程中静态再结晶的微观组织演化模型。在此基础上分析了形变组织和微观结构的演化,以及再结晶动力学和储存能的变化情况。结果表明:变形程度越大,形变组织的晶粒形态越偏离等轴状。模型可动态的再现再结晶过程中的微观组织演变,晶粒形态、晶粒尺寸符合静态再结晶基本规律。模拟得到的动力学符合JMAK理论。Avrami曲线的斜率在2.5左右。随着变形程度的增加,储存能降低的速度加快,完成静态再结晶所需的时间缩短。此规律满足能量降低准则。充分表明本模型能够较好的模拟静态再结晶过程。 |
| 关 键 词： | 静态再结晶 元胞自动机 计算机模拟 微观组织 动力学 |
Celluar Automaton Simulation (I) in Static Recrystallization Process Microstructure Evolution and Dynamics Research |
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| Guo Juan,Wang Yanmin,Li Wei,Wu Di,Zhao Xianming.Celluar Automaton Simulation (I) in Static Recrystallization Process Microstructure Evolution and Dynamics Research[J].Heavy Casting and Forging,2009(1). | |
| Authors: | Guo Juan Wang Yanmin Li Wei Wu Di Zhao Xianming |
| Affiliation: | Guo Juan1,Wang Yanmin2,Li Wei3,Wu Di1,Zhao Xianmin |
| Abstract: | Microstructure evolution model of static recrystallization during hot machining process has been established by means of the cellular automation(CA) made up of regular hexagon cells,and the nearest neighbor type and the periodic boundary condition as well.The deformed microstructure and the microstructure evolution were analyzed,and the recrystallization dynamics and the variation of storage energy as well were concluded on that basis.It turns out that the larger deformation degree,the more grain shape devi... |
| Keywords: | static recrystallization cellular automaton computer simulation microstructure dynamics |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |