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- Title
Investigation of Start Block and Corresponding Influence for Grain Selection during Casting of Single-Crystal Superalloys.
- Authors
Zhu, Xintao; Wang, Fu; Wittenzellner, Tobias; Zhang, Shuaipeng; Hemes, Susanne; Mathes, Michael; Ma, Dexin; Bührig-Polaczek, Andreas
- Abstract
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.
- Subjects
CRYSTAL grain boundaries; MICROSCOPY; ELECTRON backscattering; SINGLE crystals; HEAT resistant alloys
- Publication
Materials (1996-1944), 2019, Vol 12, Issue 10, p1717
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma12101717