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arXiv 2310.04885cond-mat.mtrl-sci
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镍基高温合金的微观结构-性能预测:相场与有限元建模相结合的方法

Microstructure-property prediction of a Ni-based superalloy: A combined phase-field and finite element modelling approach

Rupesh Chafle, Vishal Panwar, Kaushik Das, Somnath Bhowmick, Rajdip Mukherjee

AI总结:

本研究针对镍基高温合金构建相场与有限元结合的多尺度物理模型,结合CALPHAD数据库定量分析成分及时效温度对微观结构演化和有效弹性能的影响,为材料性能调控提供支撑。

摘要:

多尺度建模是近年兴起的新范式,用于研究材料科学与工程领域中广为人知的工艺-结构-性能关系问题。为使高温合金这类具有战略重要性的材料获得理想性能,必须衔接不同的长度与时间尺度,以覆盖整个设计空间。本研究构建了一种基于物理的镍基高温合金模型,将相场模型模拟得到的微观结构作为有限元计算的输入。我们结合CALPHAD(相图计算)数据库,通过改变成分和时效温度,采用相场法与有限元法定量研究了合金的微观结构演化与有效弹性能。相场模拟让我们得以深入了解微观结构演化的不同阶段,有限元分析则揭示了有效弹性能与若干系统参数之间的关系。

英文摘要:

Multiscale modelling is a new paradigm that has emerged in recent times to study the well-known problem of the process-structure-property relationship in the area of materials science and engineering. For obtaining the desired performance for materials of strategic importance, such as superalloys, it is essential to bridge different length and time scales in order to navigate the entire design space. In the present study, we develop a physics-based model for a Ni-based superalloy where the microstructures simulated using a phase-field model serve as input to finite-element computations. We examine the alloy's microstructure evolution and effective elastic properties quantitatively via phase-field and finite element methods integrated with CALPHAD database, by varying composition and aging temperature. The phase-field simulations provide us with an insight into the different regimes of microstructure evolution. The finite element analysis uncovers the relation of effective elastic properties with several system parameters.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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