Autor: Bogdanowicz, W. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Characterization of casting defects in the single crystal turbine blade airfoil
Autorzy:: Albrecht, R.
Bogdanowicz, W.
Sieniawski, J.
Kubiak, K.
Powiązania:: https://bibliotekanauki.pl/articles/1075923.pdf
Data publikacji:: 2016-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.72.Ff
61.72.-y
61.66.Dk
Opis:: 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.
Źródło:: Acta Physica Polonica A; 2016, 130, 4; 1091-1093
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Crystal perfection studies of single crystal superalloy turbine blades by X-ray diffraction methods
Autorzy:: Gancarczyk, K.
Albrecht, R.
Bogdanowicz, W.
Sieniawski, J.
Powiązania:: https://bibliotekanauki.pl/articles/1112679.pdf
Data publikacji:: 2016-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.66.Dk
61.05.cp
Opis:: In the paper the crystal structure of single crystal CMSX-4 blade casts, applied in high pressure turbine of aircraft engines was analyzed. The longitudinal section of blade, cast at withdrawal rate of 3 mm/min was used as a sample. During the conducted research, following X-ray diffraction methods were applied: EFG Ω-scan, Auleytner X-ray topography and analysis of diffraction reflex profile ("rocking curve"). The authors determined crystal orientation in entire blade casts on the basis of set criterion concerning values of angle α - deviation of [001] direction from the direction of cast withdrawal. Conclusions concerning the crystal structure quality of the blade were drawn based on results from three different research methods. Local changes in crystal orientation on the surface of blade cast, also areas with significant structure defect degree and the presence of internal stresses were characterized.
Źródło:: Acta Physica Polonica A; 2016, 130, 4; 1088-1090
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Mould walls inclination and dendritic morphology of CMSX-4 blades airfoils
Autorzy:: Krawczyk, J.
Bogdanowicz, W.
Sieniawski, J.
Kubiak, K.
Powiązania:: https://bibliotekanauki.pl/articles/1075667.pdf
Data publikacji:: 2016-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 68.70.+w
61.66.Dk
61.72.Bb
Opis:: The airfoils of single-crystalline turbine blades were studied. The blades made of industrial CMSX-4 superalloy were obtained by the Bridgman technique. Five different withdrawal rates (1-5 mm/min) were used. Series of as-cast samples were prepared by cutting the airfoils at different distances from the blade root. The metallographic sections, prepared for each cutting planes, were subjected to scanning electron microscopy observations and Laue diffraction studies. Macrostructure images of whole area of airfoil cross-sections were obtained by stitching several obtained SEM images. Morphology of dendrites in different area of cross-sections were analysed. The crystal orientation of each sample were determined by analysis of Laue pattern. It was found that the morphology of dendrites changes in the area, where the dendrite growth is limited by inclined mould walls.
Źródło:: Acta Physica Polonica A; 2016, 130, 4; 1100-1103
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Dendrite growth in selector-root area of single crystal CMSX-4 turbine blades
Autorzy:: Bogdanowicz, W.
Tondos, A.
Krawczyk, J.
Albrecht, R.
Sieniawski, J.
Powiązania:: https://bibliotekanauki.pl/articles/1058103.pdf
Data publikacji:: 2016-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.66.Dk
61.72.-y
61.10.Nz
Opis:: The single crystal turbine blades made of CMSX-4 nickel-based superalloy were studied. The turbine blades were obtained by the Bridgman technique with withdrawal rate of 5 mm/min. The samples, cut-off from root part of blades and containing the fragment of the selector, were studied. The effect of selector geometry on the dendrites growth and defects formation in the selector-root area of the blade were analyzed. The Laue diffraction, scanning electron microscopy, and X-ray diffraction topography were applied. It was found that, during crystallization of the selector, the dendrite cores, after reaching the surface of mould, may bend, if the angle between dendrite cores and the mould surface was equal to 12°. When the angle was equal to 24° the growth of dendrites has been stopped. It can be stated that the defects, which appeared in the selector were inherited by the root part.
Źródło:: Acta Physica Polonica A; 2016, 130, 4; 1107-1109
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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