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ZrC1-xNx固溶体的价电子结构与性能
  • 期刊名称：稀有金属材料与工程, 2008, 37(6): 980-983
  • 时间：0
  • 分类：TG172.82[金属学及工艺—金属表面处理;金属学及工艺—金属学]
  • 作者机构：[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
  • 相关基金：Project supported by the National Natural Science Foundation of China （Nos. 90505015 and 10702035）
  • 相关项目：非烧蚀防热机理与材料的设计、制备和表征
中文摘要：

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.

英文摘要：

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 axe predicted for Fe-Cr-A1-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.

同期刊论文项目
非烧蚀防热机理与材料的设计、制备和表征
期刊论文 89 会议论文 24
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