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    Wyświetlanie 1-4 z 4
    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
    Tytuł:
    Primary Creep Behaviour of Two-Phase Titanium Alloy with Various Microstructure
    Autorzy:
    Ziaja, W.
    Motyka, M.
    Kubiak, K.
    Sieniawski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/351523.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    two-phase titanium alloys
    microstructure
    finite element method
    primary creep
    Opis:
    Creep and fatigue properties of two-phase titanium alloys show strong dependence on microstructure, especially morphology of the α and β phases which can be controlled to certain extent by proper selection of hot working and heat treatment conditions. In the paper the creep behaviour of Ti-6Al-2Mo-2Cr alloy (VT3-1) at elevated temperature was modelled. Finite element analyses of primary creep stage were carried out taking into account some microstructural features of the two-phase alloy that were included in the physical model and different properties of α and β phases. In order to verify results of calculations distinct types of microstructure were developed in the alloy by heat treatment and creep tests were carried out at elevated temperature (450°C) at various stress levels. Based on the FEM simulations the effect of changes of some microstructure features on primary creep strain development was estimated.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 2A; 683-688
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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
    Tytuł:
    Effect of creep on crystallographic orientation in single crystal superalloy
    Autorzy:
    Albrecht, R.
    Rak, J.
    Bogdanowicz, W.
    Gancarczyk, K.
    Sieniawski, J.
    Kubiak, K.
    Lelątko, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1075665.pdf
    Data publikacji:
    2016-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.72.Ff
    81.10.Aj
    61.72.Hh
    Opis:
    The creep-rupture tests were performed on a single crystal rods made of CMSX-4 superalloy obtained at withdrawal rates of 3 and 5 mm/min. After the rupture the microstructure and fracture surface were examined and correlated with X-ray crystal rotation measurements by the Ω-scan method. The conclusions about the crystal lattice rotation during creep test were provided.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 4; 1094-1096
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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