Temat: 61.72.-y - 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:: 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

Skocz do pozycji: 3.

Tytuł:: Boriding of binary Ni-Ti and ternary Ni-Ti-Cu shape memory alloys
Autorzy:: Ucar, N.
Turku, N.
Ozdemir, A.
Calik, A.
Powiązania:: https://bibliotekanauki.pl/articles/1065676.pdf
Data publikacji:: 2016-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.66.Dk
61.72.-y
62.20.Qp
Opis:: In this work, the boriding of binary (Ni-Ti) and ternary (Ni-Ti-Cu) shape memory alloys was carried out in a solid medium at 1173 K for 8 h using the powder pack method with Ekabor-Ni powders. Characterization of boride layer formed on the surface of alloys was identified by optical microscopy and scanning electron microscopy. TiB₂, NiB₂ and SiC phases in the boride layer of borided binary (Ni-Ti) and ternary (Ni-Ti-Cu) shape memory alloys was confirmed by X-ray diffraction analysis. The microhardness and thickness of the boride layers were measured. The obtained hardness values show a hardness anomaly due to porosity and structural defects with increase of Cu content, while a decrease in the value of hardness moving from the boride layer to main structure was observed.
Źródło:: Acta Physica Polonica A; 2016, 130, 1; 492-495
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Positron Annihilation Study of the Ageing Effects in the Cu-Zn-Sn Parent Phase
Autorzy:: Frąckowiak, J. E.
Płotkowski, K.
Salamon, A.
Powiązania:: https://bibliotekanauki.pl/articles/1933578.pdf
Data publikacji:: 1995-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 76.80.+y
61.72.-y
61.66.Dk
78.70.Bj
Opis:: A study of ageing effects on the structure of Cu-Zn-Sn shape memory alloys was performed using the $\text{}^{119}$Sn Mössbauer spectroscopy and positron annihilation techniques (the positron lifetime, and Doppler broadening line-shape S-parameter measurements). Two stages of ageing at 200°C connected with redistribution of Sn atoms were observed.
Źródło:: Acta Physica Polonica A; 1995, 88, 2; 327-332
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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