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首页> 外文会议>International Conference on Mechanical and Aerospace Engineering >An Overview of Gamma Prime Precipitates Rafting in Ni-Based SC Superalloys: Degradation Kinetics, Modeling and Relations with Mechanical Properties
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An Overview of Gamma Prime Precipitates Rafting in Ni-Based SC Superalloys: Degradation Kinetics, Modeling and Relations with Mechanical Properties

机译：镍基超高温合金中γ沉淀析出的概述：降解动力学，建模及其与机械性能的关系

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摘要

Single crystal (SC) Ni-based superalloys are widely used as the crucial components manufacturing in the turbine blades and land-based gas turbines due to their high tensile strength, stability, and thermal efficiency etc. Microstructure degradation such as rafting, is an essential phenomenon that affects the mechanical properties of the materials in severe service environment to some extent. Hence, it is significant to understand the kinetics of rafting. Besides, quantitative analysis methodology of degradation kinetics investigation is also important. In present overview, specific differences of coarsening and rafting are illustrated in clear comparisons and reviewed to reduce ambiguity in the research works. Subsequently, a new technique which can effectively enhance the experimental efficiency during Ni-based superalloys investigation is introduced. Two classical degradation models to analyze the rafting kinetics are additionally evaluated and compared. Finally, the influence of rafting on the mechanical properties and recent experimental results related are discussed.
机译：单晶（SC）镍基高温合金由于其高抗拉强度，稳定性和热效率等特性，被广泛用作涡轮叶片和陆基燃气轮机中的关键部件制造。微结构退化（例如漂流）是必不可少的在苛刻的使用环境中会在某种程度上影响材料的机械性能的现象。因此，了解漂流的动力学意义重大。此外，降解动力学研究的定量分析方法也很重要。在目前的概述中，粗化和漂流的具体差异通过清晰的比较进行了说明，并进行了审查，以减少研究工作中的歧义。随后，提出了一种可以有效提高镍基高温合金研究效率的新技术。另外评估和比较了两种经典的降解模型来分析漂流动力学。最后，讨论了漂流对机械性能的影响以及相关的最新实验结果。

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