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

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