The Number of Subgrain Boundaries in the Airfoils of Heat-Treated Single-Crystalline Turbine Blades

The Number of Subgrain Boundaries in the Airfoils of Heat-Treated Single-Crystalline Turbine Blades

In the present study, the dendrites deflection mechanism from the mold walls were subjected to verification regarding its heat-treated turbine rotor blades. The number of macroscopic low-angle boundaries created on the cross-section of the blades' airfoil near the tip was experimentally determi...

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Bibliographic Details
Published in:Materials Vol. 14; no. 1; p. 8
Main Authors: Krawczyk, Jacek, Bogdanowicz, Włodzimierz, Sieniawski, Jan
Format: Journal Article
Language:English
Published: Switzerland MDPI 22-12-2020
Subjects:
crystal growth
turbine blades
superalloys
X-ray topography
low-angle boundaries
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Summary:In the present study, the dendrites deflection mechanism from the mold walls were subjected to verification regarding its heat-treated turbine rotor blades. The number of macroscopic low-angle boundaries created on the cross-section of the blades' airfoil near the tip was experimentally determined and compared to the number of low-angle boundaries calculated from a model based on the dendrites deflection mechanism. Based on the Laue patterns and geometrical parameters of airfoils, the number of low-angle boundaries occurring at the upper part of the blades airfoil after heat treatment was calculated. This number for the analyzed group of blades ranged from 5 to 9.
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ISSN:1996-1944
1996-1944
DOI:10.3390/ma14010008