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建立了考虑伴随台阶的位错间相互作用的界面反应-扩散混合控制模型,并利用该模型对先共析铁素体2个台阶以及多个台阶的生长过程进行模拟.结果表明,当只有2个台阶且其水平距离大于临界距离时,台阶之间相互吸引,能在一定程度降低领先台阶的生长速率;当2个台阶水平距离小于临界距离时,台阶之间相互排斥,增大领先台阶的生长速率;多台阶的情形下,伴随台阶的位错之间相互作用,台阶的合并规律发生改变,并对台阶生长速率产生一定影响.
An interfacial reaction-diffusion hybrid control model considering the interaction between dislocations accompanied with steps is established and the model is used to simulate the growth of two steps of pro-eutectoid ferrite and multiple steps.The results show that when only 2 When the horizontal distance between the two steps is less than the critical distance, the steps attract each other, which can reduce the growth rate of the leading step to some extent. When the horizontal distance between the two steps is less than the critical distance, the steps mutually exclude each other and increase the size of the leading step Growth rate; in the case of multi-step, with the interaction between the dislocations of the steps, the merging regularity of the steps changes, and has an impact on the step growth rate.