Comparative structure control of single-crystal castings of nickel superalloys X-ray diffraction methods of oscillation and Laue

Kuzmina N.A., Lifshitz V.A., Potrakhov E.N., Potrakhov N.N.
UDC
669.245
DOI
10.18577/2307-6046-2019-0-9-15-25
Article PDF (Russian) (987.3 KB)
How to cite
Kuzmina N.A., Lifshitz V.A., Potrakhov E.N., Potrakhov N.N. Comparative structure control of single-crystal castings of nickel superalloys X-ray diffraction methods of oscillation and Laue // Proceedings of VIAM. 2019. No. 9. DOI: 10.18577/2307-6046-2019-0-9-15-25. URL: https://test.viam.ru/en/journal/2019/9/2
Keywords
single crystal, crystallographic orientation, subgrain disorientation, lauegram, x-ray diffraction.
Abstract

The article compares the possibilities of x-ray swing and Laue methods for mass control of the structure perfection of single-crystal castings of nickel heat-resistant alloys. It is concluded that both methods give similar results in determining the axial orientation of single crystals. In determining the misalignment of the block substructure, the swing method allows us to find the axial deviation of each block relative to the Z axis of the sample, that is, relative to the direction of the main acting voltage, and the Laue method allows us to calculate the angles of disorientation of the blocks relative to the orientation of the main crystal. The advantage of the method of Laue in determining the angle of disorientation blocks, as it allows you to test the disorientation of casting blocks of complex shape.

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