Grain growth simulation in an IF steel _ Effect of grain boundary mobility

17th International Conference on Textures of Materials

材料科学;物理学

Ayad, A.^1,2 ; Rouag, N.^2 ; Wagner, F.^3

Département de Pharmacie, Faculte de Médecine, Université Constantine 3, Algeria^1

Laboratoire de Microstructures et Défauts dans les Matériaux, Université Constantine 1, Algeria^2

LEM3 (CNRS-UMR 7239), Université de Lorraine, Ile du Saulcy, Metz

57045, France^3

关键词: Grain growth simulations;    Grain size effect;    Grain-boundary mobility;    IF steel;    Monte Carlo model;    Normal grain growth;    Speed up;    Texture behavior;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/82/1/012051/pdf
DOI  :  10.1088/1757-899X/82/1/012051

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In a recent paper, we have proposed a modified Potts model for the simulation of the normal grain growth stage in an IF steel. An original concept is introduced by a modular consideration of the grain size effect. It is based on experimental observations of partial textures of certain (sub) populations of grains. This allowed both better reflect the pressure at the grain boundaries and significantly speed up the calculations. This model was used to reproduce the main features of the microstructure and texture. Improvement of texture behavior, especially of the component {111}, which differs slightly from the experiment, requires the introduction of strong assumptions on energy and mobility of grain boundaries. The objective of this study is to verify the ability of the modified Monte Carlo model to give satisfactory results for grain growth, by considering various assumptions on energy and mobility of grain boundaries. The validity of such assumptions and their impact on the simulation results are analyzed and discussed.