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Wyszukujesz frazę "Nuckowski, P. M." wg kryterium: Autor

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    Wyświetlanie 1-8 z 8
    Tytuł:
    Analiza składu chemicznego i fazowego cienkich warstw metalicznych
    Autorzy:
    Lukaszkowicz, K.
    Staszuk, M.
    Nuckowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/274354.pdf
    Data publikacji:
    2017
    Wydawca:
    Roble
    Tematy:
    dyfraktometria rentgenowska
    XPS
    spektroskopia fotoelektronów w zakresie promieniowania X
    GDS/GDOES
    emisyjna spektroskopia optyczna z wyładowaniem jarzeniowym
    cienkie warstwy metaliczne
    X-ray diffractometry
    x-ray photoelectron spectroscopy
    glow discharge optical emission spectrometry
    metallic thin layers
    Źródło:
    LAB Laboratoria, Aparatura, Badania; 2017, 22, 5; 24-29
    1427-5619
    Pojawia się w:
    LAB Laboratoria, Aparatura, Badania
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of Thermal Stability of Intermetallic Phases Precipitates in Continuous Ingots of AlCu4MgSi Alloy
    Autorzy:
    Nuckowski, P. M.
    Kondracki, M.
    Wróbel, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/382300.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    aluminium alloys
    phase analysis
    high temperature X-ray diffraction
    thermal-derivative analysis
    stopy aluminium
    analiza fazowa
    wysokotemperaturowa dyfrakcja rentgenowska
    analiza termopochodna
    Opis:
    The article presents the results of research concerning to AlCu4MgSi alloy ingots produced using horizontal continuous casting process. The presented research was focused on the precise determination of phase composition of the precipitates formed during the solidification of ingots and the analysis of their thermal stability. In order to assess the morphology of precipitates in the AlCu4MgSi alloy, data obtained by using a computer simulation of thermodynamic phenomena were compiled with results obtained using advanced research techniques, i.e. High-temperature X-ray diffraction (HT-XRD), SEM-EDS, Thermal and derivative analysis (TDA) and Glow discharge optical emission spectroscopy (GD OES). SEM observations and analysis of chemical composition in micro-areas showed that the precipitates are mainly intermetallic θ-Al2Cu and β-Mg2Si phases, and also presence of Al19Fe4MnSi2 intermetallic phase was confirmed by X-ray diffraction studies. Based on the prepared Thermo-Calc simulation data, high-temperature X-ray diffraction measurements were conducted.
    Źródło:
    Archives of Foundry Engineering; 2019, 4; 99-104
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of the repetitive corrugation on the mechanism occuring during plastic Deformation of CuSn6 alloy
    Autorzy:
    Nuckowski, P. M.
    Kwaśny, W.
    Rdzawski, Z.
    Głuchowski, W.
    Pawlyta, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/353458.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    CuSn6 alloy
    severe plastic deformation
    repetitive corrugation
    structure analysis
    high-resolution transmission electron microscopy
    Opis:
    Influence of the repetitive corrugation on the mechanism occuring during plastic Deformation of CuSn6 alloy This paper presents the research results of Cu$n6 alloy strip at semi-hard state, plastically deformed in the process of repetitive corrugation. The influence of process parameters on the mechanical properties and structure of examined alloy were investigated. Examination in high-resolution transmission electron microscopy (HRTEM) confirmed the impact of the repetitive corrugation to obtain the nano-scale structures. It has been found, that the application of repetitive corrugation increases the tensile strength (Rm). yield strength (Rpo:) and elastic limit (Rpo.os) of CuSn6 alloy strips. In the present work it has been confirmed that the repetitive corrugation process is a more efficient method for structure and mechanical properties modification of commercial CuSn6 alloy strip (serni-hard) as compared with the classic rolling process.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 3; 1261-1264
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mechanical properties and fracture analysis of AlCu4MgSi alloy ingots obtained by horizontal continuous casting
    Autorzy:
    Nuckowski, P. M.
    Wróbel, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/352196.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    AlCu4MgSi alloy
    horizontal continuous casting
    fracture analysis
    mechanical properties of ingots
    aluminum
    Opis:
    The article presents the results of research concerning AlCu4MgSi alloy ingots produced using horizontal continuous casting process under variable conditions of casting speed and cooling liquid flow through the crystallizer. The mechanical properties and structure of the obtained ingots were correlated with the process parameters. On the basis of the obtained results, it has been shown that depending on the cooling rate and the intensity of convection during solidification, significant differences in the mechanical properties and structure and of the ingots can occur. The research has shown that, as the casting speed and the flow rate of the cooling liquid increase, the hardness of the test samples decreases, while their elongation increases, which is related to the increase of the average grain size. Also, the morphology of the intermetallic phases precipitations lattice, as well as the centerline porosity and dendrite expansion, significantly affect the tensile strength and fracture mechanism of the tested ingots.
    Źródło:
    Archives of Metallurgy and Materials; 2019, 64, 1; 113-118
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Texture and Residual Stresses in the CuSn6 Alloy Subjected to Intense Plastic Deformation
    Autorzy:
    Nuckowski, P. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/356413.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    CuSn6 alloy
    repetitive corrugation
    texture
    residual stresses
    intense plastic deformation
    Opis:
    This paper presents the results of analysis of commercial CuSn6 alloy in form of strips at semi-hard state, plastically deformed in the process of repetitive corrugation. The influence of process parameters on the value of residual stresses and texture of examined material was investigated. As a result of residual stress analysis, the presence of compressive stresses for all analysed samples, regardless of the method of plastic working and direction of measurement, was confirmed. The distribution and the value of the stresses depend on the applied deformation process. Texture analysis shows that in the classically rolled strip, in addition to the Brass {110}<112> component, also the Goss {110}<001> and Copper {112}<111> components are present, and their contribution diminishes with the increase in the number of cycles of repetitive corrugation process. After intense plastic deformation the strip is characterised by two distinct texture components, {110}<112> and {110}<111>.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 1; 241-245
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Influence of the Dispersion Method on the Microstructure and Properties of MWCNTs/AA6061 Composites
    Autorzy:
    Dobrzański, L. A.
    Macek, M.
    Tomiczek, B.
    Nuckowski, P. M.
    Nowak, A. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/352262.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    nanocomposites
    powder metallurgy
    mechanical milling
    carbon nanotubes
    aluminium alloys
    Opis:
    The aim of this work was to study the effect of different methods of multi-walled carbon nanotubes (MWCNTs) dispersion, and their influence on the microstructure and properties of aluminium alloy matrix composites produced using the powder metallurgy techniques, such as powder milling/mixing and hot extrusion. The main problem in the manufacturing of nanocomposites is the homogeneous distribution of MWCNTs in the metal matrix. To achieve their proper distribution a high-energy and low-energy mechanical milling, using a planetary ball mill, and mixing, using a turbulent mixer, were applied. Studies have shown that composite materials prepared using milling and extrusion have a much better dispersion of the reinforcing phase, which leads to better mechanical properties of the obtained rods. The low-energy mechanical mixing and mixing using the turbulent mixer neither change the powder morphology nor lead to adequate dispersion of the carbon nanotubes, which directly affects the resulting properties.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 2B; 1229-1234
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Influence of Variable Parameters of Horizontal Continuous Casting on the Structure of AlCu4MgSi Alloy Ingots
    Autorzy:
    Nuckowski, P. M.
    Wróbel, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/380484.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    metallography
    aluminum alloys
    continuous casting
    structure analysis
    X-ray diffraction
    phase analysis
    metalografia
    stopy aluminium
    odlewanie ciągłe
    analiza struktury
    dyfrakcja rentgenowska
    analiza fazy
    Opis:
    The article presents results of research on the influence of variable parameters of horizontal continuous casting on the structure of AlCu4MgSi (EN AW-2017A) alloy ingots. The special character of the process allows for a continuous change of some of its parameters, namely, of the casting speed and of the rate of the cooling fluid flow thorough the crystallizer. These parameters have a significant impact on the crystallization process of the liquid metal. Depending on the cooling rate, intensity of the convection inside the solidifying alloy, and its chemical composition, there may arise some differences in the structure of the cast. In this study, ingots obtained at different casting speeds have been analyzed. The research methodology, based on light microscopy and electron microscopy (SEM), as well as energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD), allowed for a thorough examination of the structure of the studied materials. The results were shown that an increase in the ingot casting speed leads to an increase in the average grain surface area.
    Źródło:
    Archives of Foundry Engineering; 2018, 18, 1; 196-202
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Precipitation Hardening of Continuous Ingots of AlSi2Mn and AlCu4MgSi Alloys
    Autorzy:
    Wróbel, T.
    Nuckowski, P. M.
    Jurczyk, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/382653.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    aluminum alloy
    precipitation hardening
    continuous casting
    silicon
    cooper
    stop aluminium
    utwardzanie wydzieleniowe
    odlewanie ciągłe
    silikon
    miedź
    Opis:
    The paper presents the research results of the influence of the precipitation hardening on hardness and microstructure of selected Al-Si and Al-Cu alloys obtained as ϕ30 mm ingots in a horizontal continuous casting process. The ingots were heat treated in process of precipitation hardening i.e. supersaturation with subsequent accelerated or natural ageing. Moreover in the range of the study it has been carried out investigations of chemical constitution, microscopic metallographic with use of scanning electron microscope with EDS analysis system, and hardness measurements using the Brinell method. On basis of obtained results it has been concluded that the chemical constitution of the investigated alloys enables to classify them into Al alloys for the plastic deformation as EN AW-AlSi2Mn (alternatively cast alloy EN AC-AlSi2MgTi) and as EN AW-AlCu4MgSi (alternatively cast alloy EN AC-AlCu4MgTi) grades. Moreover in result of applied precipitation hardening has resulted in the precipitation from a supersaturated solid solution of dispersive particles of secondary phases rich in alloying element i.e. Si and Cu respectively. In consequence it has been obtained increase in hardness in case of AlSi2Mn alloy by approximately 30% and in case of AlCu4MgSi alloy by approximately 20% in comparison to the as-cast state of continuous ingots.
    Źródło:
    Archives of Foundry Engineering; 2018, 18, 2; 181-186
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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