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基于水平集和SSRVE方法的双相钢相变数值模拟

Numerical Modeling of Phase Transformations in Dual-Phase Steels Using Level Set and SSRVE Approaches.

作者信息

Bzowski Krzysztof, Rauch Łukasz, Pietrzyk Maciej, Kwiecień Marcin, Muszka Krzysztof

机构信息

Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland.

出版信息

Materials (Basel). 2021 Sep 17;14(18):5363. doi: 10.3390/ma14185363.

DOI:10.3390/ma14185363
PMID:34576587
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8470693/
Abstract

Development of a reliable model of phase transformations in steels presents significant challenges, not only metallurgical but also connected to numerical solutions and implementation. The model proposed in this paper is dedicated to austenitic transformation during heating and ferritic transformation during cooling. The goal was to find a solution which allows for the decreasing of computing time without noticeable decreasing the accuracy and reliability of the model. Proceedings to achieve this goal were twofold. Statistically Similar Representative Volume Element was used as a representation of the microstructure. It allowed for the reducing of the complexity of the computational domain. For the purpose of the model, carbon diffusion was assumed to be the main driving force for both transformations. A coupled finite element-level set method was used to describe growth of a new phase. The model was verified and validated by comparing the results with the experimental data. Numerical tests of the model were performed for the industrial intercritical annealing process.

摘要

开发可靠的钢中相变模型面临重大挑战，不仅涉及冶金方面，还与数值解和实现有关。本文提出的模型致力于加热过程中的奥氏体转变和冷却过程中的铁素体转变。目标是找到一种解决方案，在不显著降低模型准确性和可靠性的情况下减少计算时间。实现这一目标的步骤有两个方面。统计相似代表性体积单元被用作微观结构的表示。这使得计算域的复杂性得以降低。为了该模型的目的，假定碳扩散是两种转变的主要驱动力。一种耦合有限元-水平集方法被用于描述新相的生长。通过将结果与实验数据进行比较，对该模型进行了验证和确认。针对工业临界区退火过程对该模型进行了数值测试。

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本文引用的文献

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