摘要
基于亚晶异常长大形核机制,采用元胞自动机方法,建立了低碳钢静态再结晶仿真模型,模拟了退火均热温度对再结晶过程的影响。模拟结果表明,再结晶初期存在明显的孕育期,没有再结晶晶核产生;随着温度的升高,再结晶晶核优先在晶界和晶粒内储存能较大处产生;再结晶完成时的晶粒尺寸基本不受退火均热温度的影响;提高退火均热温度可以显著加快再结晶速度。
Based on nucleation mechanism of abnormal sub-grain growth,a simulation model of static recrystallization of low carbon steel was established by the mean of cellular automaton method.The influence of annealing temperature on static recrystallization process was simulated.The simulation results show that there is an obvious incubation period at the beginning of recrystallization and no nuclei produced.Recrystallization nuclei preferentially concentrate both at the grain boundaries and in the heavily deformed grain interiors with the rise of temperature.Once the recrystallization stopped,grain size is not affected by annealing temperature.Increasing the annealing temperature can significantly accelerate the rate of recrystallization.
出处
《金属热处理》
CAS
CSCD
北大核心
2011年第7期96-100,共5页
Heat Treatment of Metals
关键词
元胞自动机
计算机仿真
静态再结晶
cellular automaton
computer simulation
static recrystallization
