Abstract The use of appropriate forming processes allows to obtain materials of required shapes, structures and properties. The technological conditions of the process can be optimized in view of the final microstructure. It can be achieved using different modeling methods, but recently use of cellular automata remains on the high level of interest. The aim of the study is a development and verification of the model of microstructure evolution during the flat rolling process. The microstructural model is based on frontal cellular automata, which uses for simulation of the rolling process of AISI 304L stainless steel. Modeling can be done on the basis of the general characteristics of the process i.e. the information about the duration of plastic deformation, time intervals between the passes, temperature and strain rate. The paper presents the modeling results of flat rolling process of AISI 304L stainless steel for different processing conditions. The modeling of three passes is presented. The results of the microstructure evolution can be observed as the microstructure maps at the selected time moments, as well as changes of average grain size, grain size distribution, fraction of recrystallization and flow stress. Some of the simulation results are verified with the experimental data. Model shows the high flexibility, allowing to take into account the various processing parameters. Simulation results are similar to the real processing conditions. It can be considered as a new tool for the development and optimization of flat rolling in view of final microstructure.

中文翻译：

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AISI 304L不锈钢轧制过程中微观结构的演变——正面元胞自动机建模与验证

摘要 使用适当的成型工艺可以获得所需形状、结构和性能的材料。该工艺的工艺条件可以根据最终的微观结构进行优化。它可以使用不同的建模方法来实现，但最近对元胞自动机的使用仍然受到高度关注。该研究的目的是开发和验证平轧过程中微观结构演化模型。微观结构模型基于正面元胞自动机，用于模拟AISI 304L不锈钢的轧制过程。建模可以基于过程的一般特征进行，即关于塑性变形的持续时间、道次之间的时间间隔、温度和应变率的信息。本文介绍了 AISI 304L 不锈钢在不同加工条件下平轧工艺的建模结果。介绍了三遍的建模。微观结构演化的结果可以通过选定时刻的微观结构图以及平均晶粒尺寸、晶粒尺寸分布、再结晶分数和流动应力的变化来观察。部分仿真结果与实验数据相验证。模型显示出高度的灵活性，允许考虑到各种加工参数。模拟结果与实际加工条件相似。从最终显微组织的角度来看，它可以被认为是开发和优化平轧的新工具。