Correlation between the Dendritic Structure and Lattice Parameter of γ′-Phase in Single-Crystalline Turbine Blades Made of Superalloys
Authors:
- Jacek Krawczyk,
- Włodzimierz Bogdanowicz
Abstract
The dendritic structure and the distribution of the γ′-phase lattice parameter (aγ′) along selected lines of the longitudinal section in a model single-crystalline blade made of CMSX-4® nickel-based superalloy were studied. It was established that there is a correlation between the value of the aγ′ and the predomination of initial or ending fragments of the secondary dendrite arms. It is most noticed for the areas where the dendrite growth conditions are similar to steady. They are located in the center and near the root’s selector extension (SE) area. The correlation has been related to the dendritic segregation mechanism. It was shown that in the single-crystalline blades obtained by the directional crystallization using a spiral selector, the “walls” of the primary dendrite arms that grow at a low angle to the blade axis are created. It was found for the first time that the value of the lattice parameter aγ′ is decreased near such “walls”. Additionally, it was found that competitive growth of the dendrites may occur at a distance of even several millimeters from the bottom surface of the root. The first-time applied X-ray diffraction measurements of aγ′ made in a single-pass along the line allow the analysis of the dendritic segregation in the whole blade cast.
- Record ID
- USL4648ebbb7be84e4b996602dfe7fe5c61
- Author
- Journal series
- Materials, ISSN 1996-1944
- Issue year
- 2022
- No
- 3
- Pages
- 1-14
- Publication size in sheets
- 0.70
- Article number
- 781
- Keywords in English
- nickel-based superalloy, X-ray diffraction, lattice parameter, dendritic array
- ASJC Classification
- DOI
- DOI:10.3390/ma15030781 Opening in a new tab
- Handle.net URL
- hdl.handle.net/20.500.12128/22415 Opening in a new tab
- URL
- http://hdl.handle.net/20.500.12128/22415 Opening in a new tab
- Language
- eng (en) English
- License
- File
-
- File: 1
- Correlation between the Dendritic Structure and Lattice Parameter of γ′-Phase in Single-Crystalline Turbine Blades Made of Superalloys, File Krawczyk_Bogdanowicz_Correlation_between_the_Dendritic.pdf / 4 MB
- Krawczyk_Bogdanowicz_Correlation_between_the_Dendritic.pdf
- publication date: 06-02-2024
- Correlation between the Dendritic Structure and Lattice Parameter of γ′-Phase in Single-Crystalline Turbine Blades Made of Superalloys, File Krawczyk_Bogdanowicz_Correlation_between_the_Dendritic.pdf / 4 MB
-
- Score (nominal)
- 140
- Score source
- journalList
- Score
- = 140.0, 26-08-2023, ArticleFromJournal
- Publication indicators
- Uniform Resource Identifier
- https://opus.us.edu.pl/info/article/USL4648ebbb7be84e4b996602dfe7fe5c61/
- URN
urn:uni-kat-prod:USL4648ebbb7be84e4b996602dfe7fe5c61
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.