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説明:

The integration of the phase-field method with CALculation of PHAse Diagrams (CALPHAD) free-energy datasets has significantly improved the prediction of microstructural evolution in practical alloys. We formulated two models to compute interfacial compositions, characterized by their high computational accuracy and efficiency. The inaugural model utilizes convergence calculations to fulfill the equal diffusion potential condition, while the subsequent model obviates the need for such calculations. Despite this, its computational outcomes strongly agree with those of the preceding model. Notably, in these models, the alteration in composition attributable to interfacial curvatures aligns with the Gibbs-Thomson effect within the equilibrium system. In this study, the solidification processes of Ni-Al-Cr and Ag-Cu-Sn alloys serve as case studies to underscore the computational precision and swiftness of the proposed models.

権利情報:

• In Copyright
  ©2024 American Physical Society

キーワード: Phase-field model, CALPHAD

刊行年月日: 2024-06-10

出版者: American Physical Society (APS)

掲載誌:

• Physical Review E (ISSN: 24700045) vol. 109 issue. 6 065303

研究助成金:

• Japan Society for the Promotion of Science 22K04794 (フェーズフィールド法「エコ」ソフトウエアの開発と公開)

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5266

公開URL: https://doi.org/10.1103/physreve.109.065303

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更新時刻: 2025-01-10 16:31:40 +0900

MDRでの公開時刻: 2025-01-10 16:31:40 +0900