Evaluating microstructural parameters of three-dimensional grains generated by phase-field simulation or other voxel-based techniques
Evaluating microstructural parameters of three-dimensional grains generated by phase-field simulation or other voxel-based techniques
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DOI：
10.1088/0965-0393/20/7/075009
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发表时间：
2012-09
影响因子：
1.8
通讯作者：
Kunok Chang;C. E. Krill III;Q. Du;Long-Qing Chen
中科院分区：
文献类型：
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作者：
Kunok Chang;C. E. Krill III;Q. Du;Long-Qing Chen
的MacPherson-Srolovitz关系表示在一个三维的多晶系统中的晶粒的体积变化率的微观结构参数的平均晶粒宽度和三线长，以及各向同性值的晶界流动性和能量。我们介绍的方法，以准确地确定这些微观结构的措施所描述的晶粒结构的体素为基础的微观结构表示，如相场模拟，Monte Carlo Potts模型，或三维重建实验测量的多晶微观结构所产生的。我们评估的平均晶粒体积变化率在相场模拟的晶粒生长，并讨论的MacPherson-Srolovitz关系的结果。
The MacPherson–Srolovitz relation expresses the rate of volume change of a grain in a three-dimensional polycrystalline system in terms of microstructural parameters—the mean grain width and the triple line length—as well as isotropic values for the grain boundary mobility and energy. We introduce methods to accurately determine these microstructural measures for grain structures described by a voxel-based microstructure representation, such as those generated by phase-field simulations, Monte Carlo Potts models, or three-dimensional reconstructions of experimentally measured polycrystalline microstructures. We evaluate the mean rate of volume change of grains during a phase-field simulation of grain growth and discuss the results in terms of the MacPherson–Srolovitz relation.