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    Wyświetlanie 1-3 z 3
    Tytuł:
    The Burnishing Process of the Duplex Cast Steel in Aspect of Improving the Tribological Properties
    Autorzy:
    Stradomski, G. E.
    Fik, Joanna
    Rydz, Dariusz
    Powiązania:
    https://bibliotekanauki.pl/articles/27314153.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    tribology
    duplex cast steel
    static pressure roller burnishing
    SPRB
    trybologia
    staliwo duplex
    dogniatanie
    Opis:
    Duplex cast steel it is a material with great potential. The properties of this material have contributed to its wide application in many industrial sectors, for example: oil extraction, printing, petrochemical industry, energy - flue gas desulphurization systems, seawater desalination plants, shipbuilding industry. The article presents the results of tribological tests following the static pressure roller burnishing (SPRB) process of GX2CrNiMoN22-5-3 duplex cast steel. The tests provided a basis for assessing the effect of the burnishing parameters on tribological properties of that material. The issue is important because the authors focused their research on duplex cast steels grade that are not containing copper. The article presents part of the research concerning the influence of the burnishing process on the properties of the duplex steel surface layer. Copper in duplex steels affects many areas one of them is the plastic properties. Its absence also reduces castability. Because of that it is reasonable to determine to what extent the properties of the surface layer of copper-free duplex cast steel grades can be shaped in burnishing process.
    Źródło:
    Archives of Foundry Engineering; 2023, 23, 2; 51--57
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Tribological Response of Heat Treated AISI 52100 Steels Against Steel and Ceramic Counterparts
    Autorzy:
    Türedi, E.
    Yilmaz, M.
    Senol, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/382223.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    wear resistant alloys
    heat treatment
    bearing steel
    tribology
    microscopy
    stopy odporne na zużycie
    obróbka cieplna
    stal łożyskowa
    trybologia
    mikroskopia
    Opis:
    AISI 52100 bearing steels are commonly used in applications requiring high hardness and abrasion resistance. The bearing steels are working under dynamic loads in service conditions and their toughness properties become important. In order to provide the desired mechanical properties, various heat treatments (austenizing, quenching and tempering) are usually applied. In this study, AISI 52100 bearing steel samples were austenized at 900°C for ½ h and water quenched to room temperature. Then tempering was carried out at 795°C, 400°C and 200°C for ½ h. In order to investigate the effect of heat treatment conditions on wear behavior, dry friction tests were performed according to ASTM G99-05 Standard with a ‘ball-on-disk’ type tribometer. The samples were tested against steel and ceramic counterparts using the parameters of 100 m distance and 30 N load and 0.063 m/s rotational speed. After wear test, the surface characterization was carried out using microscopy. Wear loss values were calculated using a novel optical method on both flat and counterpart specimens.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 3; 222-228
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cellular Automaton Finite Element Method Applied for Microstructure Prediction of Aluminium Casting Treated by Laser Beam
    Autorzy:
    Hajkowski, J.
    Popielarski, P.
    Ignaszak, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/382992.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    microstructure alloys prediction
    aluminium alloys
    remelting by laser beam
    tribology
    finite element method applied
    cellular automaton
    dendrite arm spacing
    prognoza mikrostruktury stopów
    stopy aluminium
    przetapianie wiązką laserową
    trybologia
    zastosowanie metody elementów skończonych
    Opis:
    What is the limit of improvement the structure obtained directly from the liquid state, with possible heat treatment (supersaturation and aging)? This question was posed by casting engineers who put arbitrary requirements on reducing the DAS (Dendrite Arm Spacing) length to less than a dozen microns. The results of tests related to modification of the surface microstructure of AlSi7Mg alloy casting treated by laser beam and the rapid remelting and solidification of the superficial casting zone, were presented in the paper. The local properties of the surface treated with a laser beam concerns only a thickness ranging from a fraction to a single mm. These local properties should be considered in the aspect of application on surfaces of non-machined castings. Then the excellent surface layer properties can be used. The tests were carried out on the surface of the casting, the surface layer obtained in contact with the metal mould, after the initial machining (several mm), was treated by the laser beam. It turned out that the refinement of the microstructure measured with the DAS value is not available in a different way, i.e. directly by casting. The experimental-simulation validation using the Calcosoft CAFE (Cellular Automaton Finite Element) code was applied.
    Źródło:
    Archives of Foundry Engineering; 2019, 3; 111-118
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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