Characterization of As-Cast Single-Crystal CMSX-4 Superalloy Turbine Blades

Włodzimierz Bogdanowicz; Arkadiusz Onyszko; Jan Rak; Robert Albrecht; Grzegorz Dercz; Aneta Hanc; Andrzej Nowotnik; Danuta Stróż; Józef Lelątko

doi:10.4028/www.scientific.net/SSP.203-204.173

Paper Titles

Quantitative X-Ray Phase Analysis as a Method of Control of Iron Blende Roasting Process
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Molecular Dynamics Study of Adatom Size Effect on Stress Evolution in Lennard-Jones Thin Films: X-Ray Scattering Analysis
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Investigation of TiO₂ Thin Coatings for Medical Applications by X-Ray Diffraction and Raman Microspectroscopy
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Gamma Prime Crystal Lattice Orientation of Turbine Blades of the Single Crystal Nickel Based CMSX-4 Superalloy
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Characterization of As-Cast Single-Crystal CMSX-4 Superalloy Turbine Blades
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Two Methods of Studying Structure Perfection of Single Crystal Nickel-Based Superalloys
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X-Ray Investigations of Polycrystalline Compounds with General Formula ZnCr_2-xNd_xSe₄
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Modeling of Polymer Structure with the Use of SAXSDAT Computer Program
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Digital Filtering and Shape Identification in the Analysis of WAXD Patterns of Semicrystalline Polymers
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HomeSolid State PhenomenaSolid State Phenomena Vols. 203-204Characterization of As-Cast Single-Crystal CMSX-4...

Characterization of As-Cast Single-Crystal CMSX-4 Superalloy Turbine Blades

Abstract:

Nickel-based single-crystal superalloys are widely used for production of high pressure turbine blades. The studied blades were obtained in an ALD Vacuum Technologies furnace by the Bridgman technique. Crystallization process was carried out with drawing rates of 3 mm/min and 5 mm/min. The dendrite microstructure based on the γ/γ’ phases and their defects was characterized using X-Ray topography, Laue diffraction, transmission electron microscopy. The defect structure samples were examined with the positron annihilation lifetime spectroscopy. It was found that crystal orientation, lattice parameter of γ’ phase and concentration of defects are correlated. The defect concentration increases in some areas which was the result of deviation of the primary dendrite arm from crystallization direction . Only one type of point defects was detected.