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在MCrAlY-超合金系统中微结构演变的扩散建模.

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  • 1BGRIMM Technology Group, Beijing, 100160 China.

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概括
此摘要是机器生成的。

在MCrAlY-超合金系统中的元素扩散是使用核心和计划器模型建模的. 这些模拟解释了微观结构的发展,并预测了涂层-基板相互作用,有助于设计先进的热屏障涂层.

关键词:
这是一个非常重要的MCRALYY.核心外 核心外相互扩散的扩散.氧化过程中的氧化.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 金工业是金工业的一个方面.
  • 计算建模 计算建模

背景情况:

  • 高温元素扩散对于MCrAlY-超合金系统中的微结构演变至关重要.
  • 了解扩散机制对于开发适用于极端环境的先进涂层至关重要.

研究的目的:

  • 开发和应用扩散模型来模拟MCrAlY涂层和涂层基板系统中的元素行为.
  • 阐明在不同温度下特定微观结构形成背后的机制.
  • 调查MCrAlY涂层对基板的影响,并提供设计指南.

主要方法:

  • 开发一个核心外扩散模型来分析局部微结构热力学和动力学.
  • 实施涂层-基板计划器扩散模型来模拟间扩散.
  • 在Ni22Cr10AlY-超合金系统中对实验观察结果进行模拟结果的验证.

主要成果:

  • 核心外模型成功地解释了750°C的α (核心) -γ' (外) 和1100°C的γ (核心) -β (外) 的形成.
  • 计划器模型显示了与实验间扩散数据的半定量一致.
  • 该研究分析了MCrAlY涂层对基质中拓密集 (TCP) 阶段的形成的影响.

结论:

  • 扩散模型为MCrAlY-超合金的高温行为提供了宝贵的见解.
  • 开发的模型可以预测微结构演变和涂层-基板相互作用.
  • 提出了一个GOODMAN地图来设计TCP限制的MCrAlY涂层,以帮助材料选择和性能优化.