The single-crystalline turbine blades of CMSX-4 Nickel-based superalloy were studied. The turbine blades were produced by Research and Development Laboratory for Aerospace Materials in Rzeszów University of Technology by the Bridgman method. Five different withdrawn rates were used in the crystallization processes conducted in a ALD vacuum furnace.

The main phase in alloy of all obtained blades was the cubic γ′ phase. Samples for investigations were prepared by cutting the blades perpendicular to its axial direction. Changes in crystal orientation and lattice parameter of γ′ phase along the camber line of blades were analysed. The structural parameters maps (maps of γ′ lattice parameter and components of disorientation angles) were obtained by the original OD-EFG X-ray diffractometer. The changes of essential structure parameters between leading edge area and trailing edge area of the blades were determined. The SEM technique was used for complementing  the X-ray mapping results, obtained by OD-EFG diffractometer. The results were compared with the results of X-ray topography reflection method.

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