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Investigation of Start Block and Corresponding Influence for Grain Selection during Casting of Single-Crystal Superalloys

1
Foundry Institute, RWTH Aachen University, Intzestrasse 5, 52072 Aachen, Germany
2
State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
3
Access e.V., RWTH Aachen University, Intzestrasse 5, 52072 Aachen, Germany
*
Author to whom correspondence should be addressed.
Materials 2019, 12(10), 1717; https://doi.org/10.3390/ma12101717
Received: 13 May 2019 / Revised: 23 May 2019 / Accepted: 24 May 2019 / Published: 27 May 2019
(This article belongs to the Section Advanced Materials Characterization)
To figure out the impact of the parameters of a starter block (the diameter D and height H) on grain selection and the selecting mechanism, a spiral selector was measured with optical microscopy (OM) and electron backscatter diffraction (EBSD) during the solidification of Ni-based single crystal (SX) superalloys. In this experiment, starter blocks with diameters of 8 mm, 10 mm, 15 mm, and 30 mm and a height of 30 mm were designed to find the best parameters. Recommendations for optimizing starter block geometry are provided. View Full-Text
Keywords: Starter block; grain selection; selecting mechanism; Ni-based single crystal superalloys Starter block; grain selection; selecting mechanism; Ni-based single crystal superalloys
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MDPI and ACS Style

Zhu, X.; Wang, F.; Wittenzellner, T.; Zhang, S.; Hemes, S.; Mathes, M.; Ma, D.; Bührig-Polaczek, A. Investigation of Start Block and Corresponding Influence for Grain Selection during Casting of Single-Crystal Superalloys. Materials 2019, 12, 1717. https://doi.org/10.3390/ma12101717

AMA Style

Zhu X, Wang F, Wittenzellner T, Zhang S, Hemes S, Mathes M, Ma D, Bührig-Polaczek A. Investigation of Start Block and Corresponding Influence for Grain Selection during Casting of Single-Crystal Superalloys. Materials. 2019; 12(10):1717. https://doi.org/10.3390/ma12101717

Chicago/Turabian Style

Zhu, Xintao, Fu Wang, Tobias Wittenzellner, Shuaipeng Zhang, Susanne Hemes, Michael Mathes, Dexin Ma, and Andreas Bührig-Polaczek. 2019. "Investigation of Start Block and Corresponding Influence for Grain Selection during Casting of Single-Crystal Superalloys" Materials 12, no. 10: 1717. https://doi.org/10.3390/ma12101717

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