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Phase-field modeling of structural elongation and alignment of (alpha + gamma) microstructure in Fe-0.4C alloy during thermomagnetic treatment

机译:Fe-0.4C合金热磁处理过程中结构伸长和(α+γ)微观组织排列的相场建模

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摘要

During last decade, the phase-field method has emerged across many fields in materials science as the powerful tool to simulate and predict the complex microstructure developments. In this study, the microstructure changes of y precipitation in polycrystalline a phase during thermomagnetic treatment in Fe-0.4C alloy are modeled using the phase-field method. Using phase-field simulation, the model reasonably represents microstructure changes in Fe-0.4C system quantitatively. In particular, it is shown that the structural elongation and alignment of the (alpha + gamma) two-phase microstructure is influenced by the anisotropic carbon diffusion induced by the magnetic energy at the initial stage of the y phase formation. Modeling of microstructure developments with the framework of the phase-field method is shown to be a very effective strategy to predict and analyze complex microstructure formation.
机译:在过去的十年中,相场方法已经在材料科学的许多领域中兴起,成为模拟和预测复杂微结构发展的强大工具。在这项研究中,使用相场方法模拟了在Fe-0.4C合金中进行热磁处理时多晶a相中y析出的微观结构变化。使用相场模拟,该模型可以合理地定量表示Fe-0.4C系统中的微结构变化。特别地,显示了(α+γ)两相微结构的结构伸长和取向受到在y相形成的初始阶段由磁能引起的各向异性碳扩散的影响。用相场方法的框架对微观结构的发展进行建模是预测和分析复杂微观结构形成的非常有效的策略。

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