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Uniformity of the Dendritic Microstructure in Large-Sized Single-Crystal Superalloy Blades

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Abstract

The distribution of the dendrite arrays and the primary dendrite arm spacing (PDAS) in large-sized single-crystal superalloy blade was investigated by Voronoi tessellation. The dendrite arrays were hexagonal at the airfoil center and random at the trailing edge. The PDAS was gradually increased from the leading edge (about 370 μm) to the trailing edge (about 500 μm). With the solidification distance increasing, the PDAS in large-sized blade was decreased (about 380 μm) at the middle blade.

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Acknowledgments

The authors are grateful for the financial support by the Jiangsu Science and Technology Funding (Key R&D industry foresight and key technologies) under Grant BE2022124, National Natural Science Foundation of China (52071267, 51631008, 51771148, 51690163), National Key Research and Development Program (2016YFB0701400), National Science and Technology Major Project (2017-VI-0001-0070), and Natural Science Foundation of Shaanxi Province (2020JM-122).

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Authors and Affiliations

  1. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, 710072, P.R. China

    Chao Zhang, Taiwen Huang, Zhicheng Zhang, Jiachen Zhang, Dingyuan Liu, Jun Zhang & Lin Liu

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  1. Chao Zhang
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  2. Taiwen Huang
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  3. Zhicheng Zhang
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Zhang, C., Huang, T., Zhang, Z. et al. Uniformity of the Dendritic Microstructure in Large-Sized Single-Crystal Superalloy Blades. Metall Mater Trans A 54, 2507–2511 (2023). https://doi.org/10.1007/s11661-023-06963-8

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