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Advances in computational modeling through the use of higher-level microstructure characterization

机译：通过使用更高级微结构表征计算建模的进步

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In this paper, orientation maps of consecutive serial sections are collected in an automated manner by a Focused Ion Beam-Scanning Electron Microscope (FIB-SEM) outfitted with an EBSD system. Micro-Imager, a program developed in this work, uses the 2D EBSD maps to define microstructural features such as grains and grain boundaries. Parameters used to characterize microstructure are also calculated by Micro-Imager for every section. The statistical measurements of each section are compared to assess variability in the microstructure. The 2D sections are reconstructed into a volume by Micro-Imager3D, another program developed in this work. Statistics analogous to those measured in 2D are calculated and compared to the expected distributions predicted by the 2D measurements coupled with stereology. As a result, quantitative descriptions of microstructure are made and improvements over conventional methods are yielded. Information about individual constituents allows correlations between distributions to be derived. The correlations drawn allow models to account for aspects of microstructure that have classically been overlooked. The resulting 3D grain structure serves as a realistic model microstructure.
机译：在本文中，通过用EBSD系统配备的聚焦离子束扫描电子显微镜（FIB-SEM）以自动方式收集连续串口部分的取向图。 Micro-imager是在这项工作中开发的程序，使用2D EBSD地图来定义诸如谷物和晶粒边界的微观结构特征。用于表征微结构的参数也通过微图像仪计算每个部分。将每个部分的统计测量进行比较，以评估微观结构的可变性。通过Micro-imager3d重建2D部分，在这项工作中开发的另一个程序。计算类似于在2D中测量的那些的统计数据，并与与立体内科耦合的2D测量预测的预期分布相比。结果，制备了微观结构的定量描述，并产生了对常规方法的改进。有关各个成分的信息允许派生分布之间的相关性。绘制的相关性允许模型解释已被忽视的微观结构的方面。所得到的3D晶粒结构用作现实模型微观结构。

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