Serial sectioning of grain microstructures under junction control: An old problem in a new guise

17th International Conference on Textures of Materials

材料科学;物理学

Zöllner, D.^1 ; Streitenberger, P.^1

Institute for Experimental Physics, Otto von Guericke University, Magdeburg, Germany^1

关键词: Extensive simulations;    Grain microstructure;    Kinetic and thermodynamic parameters;    Microstructural features;    Microstructure analysis;    Polycrystalline grains;    Serial sectioning;    Topological properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/82/1/012080/pdf
DOI  :  10.1088/1757-899X/82/1/012080

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In the present work the importance of 3D and 4D microstructure analyses are shown. To that aim, we study polycrystalline grain microstructures obtained by grain growth under grain boundary, triple line and quadruple point control. The microstructures themselves are obtained by mesoscopic computer simulations, which enjoy a far greater control over the kinetic and thermodynamic parameters affecting grain growth than can be realized experimentally. In extensive simulation studies we find by 3D respectively 4D microstructure analyses that metrical and topological properties of the microstructures depend strongly on the microstructural feature controlling the growth kinetics. However, the differences between the growth kinetics vanish when we look at classical 2D sections of the 3D ensembles making a differentiation of the controlling grain feature near impossible.