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- Title
Investigation of the Undercoolability of Ni-Based Alloys Using High Temperature Thermal Analysis.
- Authors
Bogner, Samuel; Ivanova, Elvira; Müller, Marcel; Fu Wang; Dexin Ma; Bührig-Polaczek, Andreas
- Abstract
During the single crystal (SX) solidification of turbine blades, grain defects can form in the platform regions which have abruptly varying cross-sections. A high undercoolability of a Ni-based alloy prevents the growth of stray grains in the thermally undercooled platform area. To evaluate the undercoolability of different Ni-based alloys, temperature measurements were conducted using the same thermal conditions in an Al2O3-SiO2 investment casting shell mold system. Furthermore, the results were compared with stray grains in directionally solidified components.
- Subjects
MICROALLOYING; METALLIC composites; SURFACE coatings; CORROSION &; anti-corrosives; ELECTROPLATING; METAL pickling; METAL cleaning
- Publication
Metals (2075-4701), 2015, Vol 5, Issue 4, p1971
- ISSN
2075-4701
- Publication type
Article
- DOI
10.3390/met5041971