Calibration of phase field parameters demonstrated on kinetics of a shrinking single grain

Fischer F. D.; Zickler G. A.; Svoboda J.

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Calibration of phase field parameters demonstrated on kinetics of a shrinking single grain

机译：相位场参数的校准在缩小单粒粒子的动力学上证明了

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The phase field method is frequently employed to simulate evolution of rather complex microstructures. In order to accurately describe the real kinetics of a specific material system, the phase field parameters must be calibrated to standard thermodynamic quantities such as interface mobilities or interface energies. This letter presents a convenient method, based on thermodynamic modelling of shrinking of a single grain embedded in single crystal (matrix), how to calibrate the phase field parameters. It also shows, how the required thermodynamic quantities can be met by proper rescaling of a phase field simulation carried out for given phase field parameters.

机译：相场法经常被用来模拟相当复杂的微观结构的演化。为了准确描述特定材料系统的真实动力学，必须将相场参数校准为标准热力学量，如界面迁移率或界面能。本文基于单晶（基体）中单个晶粒收缩的热力学模型，提出了一种标定相场参数的简便方法。它还显示了如何通过对给定相场参数的相场模拟进行适当的重新缩放来满足所需的热力学量。

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来源
《Philosophical Magazine Letters》 |2017年第3期|共9页
作者
Fischer F. D.; Zickler G. A.; Svoboda J.;
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作者单位

Montan Univ Inst Mech Leoben Austria;

Montan Univ Inst Mech Leoben Austria;

Acad Sci Czech Republ Inst Phys Mat Brno Czech Republic;

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原文格式 PDF
正文语种 eng
中图分类物理学;
关键词
Thermodynamic quantities; phase field method; thermodynamic extremal principle; grain shrinkage;

机译：热力学量;相场法;热力学极值原理;谷物收缩;

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Calibration of phase field parameters demonstrated on kinetics of a shrinking single grain

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