Metals | |
Investigation of the Undercoolability of Ni-Based Alloys Using High Temperature Thermal Analysis | |
Samuel Bogner1  Elvira Ivanova2  Marcel Müller2  Fu Wang2  Dexin Ma2  Andreas Bührig-Polaczek2  | |
[1] Foundry-Institute, Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen University, Intzestraße 5, 52072 Aachen, Germany; | |
关键词: Ni-based; superalloys; undercooling; shell mold; temperature measurement; stray grains; | |
DOI : 10.3390/met5041971 | |
来源: mdpi | |
【 摘 要 】
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.
【 授权许可】
CC BY
© 2015 by the authors; licensee MDPI, Basel, Switzerland.
【 预 览 】
Files | Size | Format | View |
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RO202003190004374ZK.pdf | 1156KB | download |