东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2008, Vol. 29 ›› Issue (7): 984-987.DOI: -

• 论著 • 上一篇    下一篇

CA法模拟不同形核方式对再结晶的影响

郭娟;陈立勇;赵宪明;吴迪;   

  1. 东北大学轧制技术及连轧自动化国家重点实验室;山东石横特钢集团有限公司;东北大学轧制技术及连轧自动化国家重点实验室;东北大学轧制技术及连轧自动化国家重点实验室 辽宁沈阳110004;山东肥城271612;辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2008-07-15 发布日期:2013-06-22
  • 通讯作者: Guo, J.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50504007)

Effects of different modes of nucleation on recrystallization process by cellular automata simulation

Guo, Juan (1); Chen, Li-Yong (2); Zhao, Xian-Ming (1); Wu, Di (1)   

  1. (1) State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, China; (2) Shandong Shiheng Special Steel Group Co. Ltd., Feicheng 271612, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2008-07-15 Published:2013-06-22
  • Contact: Guo, J.
  • About author:-
  • Supported by:
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摘要： 在原有形核方式的基础上,提出了改进的位置过饱和形核和改进的恒定速率形核方式,利用元胞自动机方法(CA法),并利用Matlab开发工具,建立了形成较均匀核心的二维再结晶模型.研究了不同的形核方式、不同邻居类型和边界条件对再结晶动力学、晶粒形态及尺寸的影响.结果表明:形核方式对再结晶动力学影响较大,邻居类型对其影响不明显;采用ISS和ICR方式形核时,微观组织接近等轴状.且以ISS方式形核时,晶粒尺寸的分布最均匀.

关键词: 元胞自动机, 再结晶, 形核方式, 微观组织, 晶粒尺寸

Abstract: The improved site-saturated (ISS) mode and improved constant-rate (ICR) mode of nucleation were put forward on the basis of site-saturated (SS) mode and constant-rate (CR) mode of nucleation. A 2-D recrystallization model was developed to make crystal nuclei more uniform during recrystallization by coupling cellular automaton (CA) with Matlab. The effects of different modes of nucleation, neighborhood and boundary conditions on the kinetics of recrystallization, grain shapes and grain sizes were investigated. The results showed that the mode of nucleation affects greatly the kinetics but the neighborhood affects it unobviously. The final microstructures resulting from ISS and ICR modes present equiaxed grains and the grain size resulting from ISS mode is distributed most uniformly.

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