Grain Selection in a High-Efficiency 2D Grain Selector During Casting of Single-Crystal Superalloys.

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ID: 84393
2019
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Abstract
Using electron backscattered diffraction techniques (EBSD) and optical microscopy (OM), the grain selection and competitive growth in a new-designed high-efficiency two-dimensional (2D) selector during solidification of Ni-based single-crystal (SX) superalloys have been investigated with emphasis on the geometry of the selector part in this article. It is found that the efficiency of the grain selector depends greatly on the thickness and eccentric distance of the selector part. When the thickness is smaller than 3 mm, a single grain can be selected. After reducing this value, the grain selector becomes more effective. When the eccentric distance is larger than 8 mm, one grain can be selected. As the eccentric distance increases, the selector's efficiency is optimized. Recommendations for optimizing the geometry of the selector part are provided.
Reference Key
zhu2019grainmaterials Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Zhu, Xintao;Wang, Fu;Ma, Dexin;Bührig-Polaczek, Andreas;
Journal Materials (Basel, Switzerland)
Year 2019
DOI
E789
URL
Keywords
single crystal ni-based single crystal superalloys grain selection directional solidification rehabilitation adaptive control quaternions exoskeleton robot muscle driven simulator broilers dimethylgycine fat digestibility

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