Journal
JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION
Volume 27, Issue 1, Pages 22-29Publisher
ASM INTERNATIONAL
DOI: 10.1361/105497106X92763
Keywords
computer simulation; diffusion equation; magnetic aging; phase decomposition; phase transformation; spinodal decomposition; step aging
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During the last decade, the phase-field method has emerged in many fields if materials science as a powerful tool to simulate and predict complex microstructure development. In this study, the microstructure changes during thermomagnetic treatment and step aging of the Fe-Cr-Co magnetic alloy are modeled using phase-field methods. Using phase-field simulation, the model reasonably represented microstructural changes in the Fe-Cr-Co system quantitatively. In particular, it is shown that gradual step aging is important to obtain the lamellar microstructure that provides excellent permanent magnetic properties. Modeling of microstructure development with the framework of the phase-field method is shown to be a very effective strategy to predict and analyze complex microstructure formation.
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