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首页> 外文期刊>Journal of advanced dielectrics >PHASE-FIELD SIMULATION FOR MICROSTRUCTURAL DEVELOPMENT OF TEXTURED CERAMICS PREPARED BY REACTION TEMPLATED GRAIN GROWTH
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PHASE-FIELD SIMULATION FOR MICROSTRUCTURAL DEVELOPMENT OF TEXTURED CERAMICS PREPARED BY REACTION TEMPLATED GRAIN GROWTH

机译：反应模板晶粒生长制备的陶瓷微结构发展的相场模拟

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摘要

A modified model using phase-field method in order to describe the microstructural development for the reaction templated grain growth process was developed. The current model well expressed anisotropic enlargement of the template particles. The initial parameters such as the matrix particles size, the template particles size, fraction, aspect ratio of the template particles and porosity were examined. The simulation results show that the fraction of oriented grains increases with decreasing the matrix particles size and porosity, and increasing the fraction of the initial template particles. An increase for the aspect ratio of template particles gives rise to the anisotropic microstructure development. The study suggests that the simulation results would give a guiding principle in terms of the initial preparation conditions for the textured ceramics having both a large fraction of oriented grains and anisotropic microstructure.
机译：为了描述反应模板晶粒生长过程的微观结构发展，开发了一种使用相场方法的改进模型。当前模型很好地表达了模板颗粒的各向异性扩大。检查了初始参数，例如基体颗粒尺寸，模板颗粒尺寸，比例，模板颗粒的长径比和孔隙率。仿真结果表明，随着基体颗粒尺寸和孔隙率的减小，初始模板颗粒的比例增加，取向晶粒的比例增加。模板颗粒长径比的增加引起各向异性微观结构的发展。研究表明，模拟结果将为具有大比例取向晶粒和各向异性微观结构的纹理陶瓷的初始制备条件提供指导原则。

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  • 来源
    《Journal of advanced dielectrics》 |2012年第1期|p.1250009.1-1250009.9|共9页
  • 作者

    LIANGLIANG LIU; FENG GAO; GUOXIN HU; JIANGNAN LIU;

  • 作者单位

    State Key Laboratory of Solidification Processing College of Material Science and Engineering Northwestern Polytechnical University Xi'an 710072, P. R. China;

    State Key Laboratory of Solidification Processing College of Material Science and Engineering Northwestern Polytechnical University Xi'an 710072, P. R. China;

    State Key Laboratory of Solidification Processing College of Material Science and Engineering Northwestern Polytechnical University Xi'an 710072, P. R. China;

    Xi' an Polytechnic University Xi' an 710048, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    phase-field simulation; templated grain growth; anisotropic; functional ceramics;

    机译：相场模拟模板晶粒生长各向异性功能陶瓷;

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