Applied Mathematics and Mechanics (English Edition) ›› 2011, Vol. 32 ›› Issue (6): 757-764.doi: https://doi.org/10.1007/s10483-011-1455-8

• Articles • 上一篇    下一篇

Analysis on high-temperature oxidation and growth stress of iron-based alloy using phase field method

杨帆1 刘彬1 方岱宁1,2   

  1. 1. Department of Engineering Mechanics, School of Aerospace, Tsinghua University, Beijing 100084, P. R. China;
    2. Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, Beijing 100871, P. R. China
  • 收稿日期:2011-03-28 修回日期:2011-05-04 出版日期:2011-06-01 发布日期:2011-06-01

Analysis on high-temperature oxidation and growth stress of iron-based alloy using phase field method

YANG Fan1, LIU Bin1, FANG Dai-Ning1,2     

  1. 1. Department of Engineering Mechanics, School of Aerospace, Tsinghua University, Beijing 100084, P. R. China;
    2. Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, Beijing 100871, P. R. China
  • Received:2011-03-28 Revised:2011-05-04 Online:2011-06-01 Published:2011-06-01

摘要: High-temperature oxidation is an important property to evaluate thermal protection materials. However, since oxidation is a complex process involving microstructure evolution, its quantitative analysis has always been a challenge. In this work, a phase field method (PFM) based on the thermodynamics theory is developed to simulate the oxidation behavior and oxidation induced growth stress. It involves microstructure evolution and solves the problem of quantitatively computational analysis for the oxidation behavior and growth stress. Employing this method, the diffusion process, oxidation performance, and stress evolution are predicted for Fe-Cr-Al-Y alloys. The numerical results agree well with the experimental data. The linear relationship between the maximum growth stress and the environment oxygen concentration is found. PFM provides a powerful tool to investigate high-temperature oxidation in complex environments.

Abstract: High-temperature oxidation is an important property to evaluate thermal protection materials. However, since oxidation is a complex process involving microstructure evolution, its quantitative analysis has always been a challenge. In this work, a phase field method (PFM) based on the thermodynamics theory is developed to simulate the oxidation behavior and oxidation induced growth stress. It involves microstructure evolution and solves the problem of quantitatively computational analysis for the oxidation behavior and growth stress. Employing this method, the diffusion process, oxidation performance, and stress evolution are predicted for Fe-Cr-Al-Y alloys. The numerical results agree well with the experimental data. The linear relationship between the maximum growth stress and the environment oxygen concentration is found. PFM provides a powerful tool to investigate high-temperature oxidation in complex environments.

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