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    Wyświetlanie 1-5 z 5
    Tytuł:
    Microsegregation of Elements in Steel Composite Reinforced with Ceramic
    Autorzy:
    Medyński, D.
    Janus, A. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1837773.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    composite materials
    cast reinforced
    cast steel
    ceramic materials
    abrasive wear
    materiały kompozytowe
    staliwo zbrojone
    staliwo
    materiały ceramiczne
    zużycie ścierne
    Opis:
    The paper presents results of research on steel castings GX120Mn13 (L120G13 by PN-89/H-83160), zone-reinforced by elektrocorundum particles (Al2O3), with a grain size from 2 to 3.5 mm. Studies revealed continuity at interface between composite components and formation of a diffusion zone in the surface layer of electrocorundum grains. In the area of this zone, simple manganese segregation and reverse iron and chromium segregation were found. The transfer of these elements from cast steel to electrocorundum grains resulted superficial depletion in aluminum and oxygen in this area. No porosity was observed at the interface between two components of the composite. We found it very beneficial from an exploitation point of view, as confirmed by the study of resistance to abrasive wear.
    Źródło:
    Archives of Foundry Engineering; 2021, 21, 1; 63-66
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microsegregation of Elements in Steel Composite Reinforced with Ceramic
    Autorzy:
    Medyński, D.
    Janus, A. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1837854.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    composite materials
    cast reinforced
    cast steel
    ceramic materials
    abrasive wear
    materiały kompozytowe
    staliwo zbrojone
    staliwo
    materiały ceramiczne
    zużycie ścierne
    Opis:
    The paper presents results of research on steel castings GX120Mn13 (L120G13 by PN-89/H-83160), zone-reinforced by elektrocorundum particles (Al2O3), with a grain size from 2 to 3.5 mm. Studies revealed continuity at interface between composite components and formation of a diffusion zone in the surface layer of electrocorundum grains. In the area of this zone, simple manganese segregation and reverse iron and chromium segregation were found. The transfer of these elements from cast steel to electrocorundum grains resulted superficial depletion in aluminum and oxygen in this area. No porosity was observed at the interface between two components of the composite. We found it very beneficial from an exploitation point of view, as confirmed by the study of resistance to abrasive wear.
    Źródło:
    Archives of Foundry Engineering; 2021, 21, 1; 63-66
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstructure, Hardness and Wear Resistance of Local TiC-ZrO2/FeCr Reinforcement Fabricated in Situ in Steel Castings
    Autorzy:
    Sobula, S.
    Olejnik, E.
    Kurtyka, P.
    Szymański, Ł.
    Tokarski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/355914.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    wear resistance
    composite casting
    TiC reinforced cast steel
    metal matrix composites
    Opis:
    Wear resistance of TiC-ZrO2-Fe locally reinforced steel casting has been investigated. Composites were obtained by introducing to mould cavity compact with TiC reaction substrates, ZrO2 particles and addition of moderator. Casting with local reinforcement – composite zone was obtained. Structure and microstructure of composite zone were investigated with use of X-ray diffraction (XRD) and scanning electron microscope (SEM) methods. The Miller slurry machine and Ball-on-Disc tester were used to determine wear resistance of the fabricated locally reinforced TiC-ZrO2-Fe composites. The worn surface of specimens after test, was studied by SEM. Due to the presence of TiC and ZrO2 particles in composite zone steel castings exhibited higher abrasion resistance than chromium white cast iron with Ni addition Ni-Hard 1 type and comparable with composites with high TiC content.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 1; 119-124
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstructure Characteristic of TiC-Reinforced Cast Steel after GTAW Remelting
    Autorzy:
    Sobula, S.
    Kwiecień, A.
    Olejnik, E.
    Pałka, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/380286.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    composite steel casting
    TiC
    reinforced cast steel
    GTAW surface remelting
    odlew staliwny
    odlew kompozytowy
    metoda GTAW
    utwardzanie powierzchniowe
    Opis:
    In this study, low-carbon cast steel was reinforced with TiC by SHS-B method, also known as combustion synthesis during casting method. The composite zone was then subjected to surface remelting by Gas Tungsten Arc Welding (GTAW) method. The remelting operation was realized manually, at 150 A current magnitude. Microstructure, phase composition and hardness of remelted zone were investigated. XRD results reveal that the phases of the composite zone in initial state consist of TiC and Feα. Surface remelting resulted in formation of thick layers containing TiC carbides, Feα and Feγ. Microstructural examination has shown strong refinement of titanium carbides in remelted zone and complete dissolution of primary titanium carbides synthetized during casting. The average diameter of carbides was below 2 μm. The structural changes are induced by fast cooling which affects crystallization rate. The hardness (HV30) of the remelted layer was in the range between 250 HV and 425 HV, and was lower than hardness in initial state.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 4; 151-154
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wear Resistance of TiC Reinforced Cast Steel Matrix Composite
    Autorzy:
    Sobula, S.
    Olejnik, E.
    Tokarski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/381832.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    kompozyty z osłoną metalową
    MMC
    kompozyt
    staliwo zbrojone TiC
    odporność na zużycie
    metal matrix composites
    MMCs
    composite casting
    reinforced cast steel
    wear resistance
    Opis:
    Wear resistance of TiC-cast steel metal matrix composite has been investigated. Composites were obtained with SHSB method known as SHS synthesis during casting. It has been shown the differences in wear between composite and base cast steel. The Miller slurry machine test were used to determine wear loss of the specimens. The slurry was composed of SiC and water. The worn surface of specimens after test, were studied by SEM. Experimental observation has shown that surface of composite zone is not homogenous and consist the matrix lakes. Microscopic observations revealed the long grooves with SiC particles indented in the base alloy area, and spalling pits in the composite area. Due to the presence of TiC carbides on composite layer, specimens with TiC reinforced cast steel exhibited higher abrasion resistance. The wear of TiC reinforced cast steel mechanism was initially by wearing of soft matrix and in second stage by polishing and spalling of TiC. Summary weight loss after 16hr test was 0,14÷0,23 g for composite specimens and 0,90 g for base steel.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 1; 143-146
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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