Characterization of Casting Defects in the Single Crystal Turbine Blade Airfoil
R. Albrecht a, W. Bogdanowicz a, J. Sieniawski b and K. Kubiak b
aUniversity of Silesia, Institute of Materials Science, Pułku Piechoty 1A, 41-500 Chorzów, Poland
bRzeszów University of Technology, Department of Materials Science, W. Pola 2, 35-959 Rzeszów, Poland
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In the paper turbine blades made from single crystal CMSX-4 superalloy were investigated by X-ray diffraction methods (topography, Ω-scan mapping) complemented by scanning electron microscopy observations. By the X-ray diffraction topography method several misorientation defects were visualized as well as dendrites arrangement. It was discussed that tip of the airfoil and thin walled area of the turbine blades located near the trailing edge can accumulate more growth defects than other airfoil part, due to the complex shape of the mould.

DOI: 10.12693/APhysPolA.130.1091
PACS numbers: 61.72.Ff, 61.72.-y, 61.66.Dk