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    Tytuł:
    Influence of Molybdenum on the Thermal, Structural Properties and Micro Hardness of AlSi10Mg(Cu) Alloy
    Autorzy:
    Hajduch, P.
    Bolibruchova, D.
    Djurdjevic, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/383004.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    alloy AlSiMgCu
    influence of molybdenum
    thermal analysis
    micro hardness
    stop AlSiMgCu
    wpływ molibdenu
    analiza termiczna
    mikrotwardość
    Opis:
    This work is dealing with the impact of molybdenum on the structure properties of commercial cast AlSi10Mg(Cu) alloy. The solidification path of AlSi10Mg(Cu) alloy with various content of molybdenum has been investigated using cooling curve techniques. The samples for testing have been poured into permanent steel mold. The content of molybdenum has been varied from 0 to 0.20 wt. %.The desired chemical composition was achieved by adding of master alloy AlMo10 into commercial AlSi10Mg(Cu) alloy. The micro hardness of as cast alloys with different content of molybdenum has been measured. The microstructure and EDX analysis from the casted samples has been carried out. The results show that molybdenum in commercial AlSi10Cu(Mg) alloy precipitate in the interdendritic region isolated in the form of Al(FeMnMoMg)Si rich intermetallic. The increased content of molybdenum increase slightly liquidus temperature, prolonging precipitation of the last eutectic and surprisingly decrease the micro hardness of commercial alloy for approximately 16 %.
    Źródło:
    Archives of Foundry Engineering; 2018, 18, 3; 19-24
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Decoring Behaviour of Chosen Moulding Materials with Alkali Silicate Based Inorganic Binders
    Autorzy:
    Conev, M.
    Vasková, I.
    Hrubovčáková, M.
    Hajdúch, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/356323.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    inorganic binder
    alkali silicates
    moulding material
    knock-out properties
    Opis:
    This paper contains basic information about new processes for cores for cylinder heads production with alkali silicate based inorganic binders. Inorganic binders are coming back to the foreground due to their ecologically friendly nature and new technologies for cores production and new binder systems were developed. Basically these binder systems are modified alkali silicates and therefore they carry some well-known unfavourable properties with their usage. To compensate these disadvantages, the binder systems are working with additives which are most often in powder form and are added in the moulding material. This paper deals with decoring behaviour of different moulding sands as well as the influence of chosen additives on knock-out properties in laboratory terms. For this purpose, specific methods of specimen production are described. Developed methods are then used to compare decoring behaviour of chosen sands and binder systems.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 2A; 703-706
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Zirconium on the Solidification Path and Structural Properties of Commercial AlSi10MgCu Alloys
    Autorzy:
    Hajduch, P.
    Djurdjevic, M. B.
    Bolibruchová, D.
    Simicevic, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/351378.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    zirconium
    AlSi10MgCu alloy
    grain size
    SDAS
    porosity
    Opis:
    Comprehensive understanding of the melt quality is of vital importance for foundry man. The effect of each particular element need to be properly analysed. Therefore, the aim of this paper was to analyse the impact of various content of zirconium on the solidification path and structural characteristics (SDAS, grain size, porosity) of as cast commercial AlSi10MgCu alloys. It has been found that addition of zirconium up to 0.24 wt.% reduce significantly the grains size (from 3.5 mm to 1.2 mm), SDAS (from 57.3 μm to 50.4 μm) and porosity (from 19% to 5%), leading to production of sound cast parts.
    Źródło:
    Archives of Metallurgy and Materials; 2020, 65, 2; 549-554
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of Zirconium on the Structural and Mechanical Properties of Commercial AlSi10MgCu Alloys
    Autorzy:
    Hajduch, P.
    Djurdjevic, M. B.
    Bolibruchová, D.
    Simicevic, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/356527.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    zirconium
    AlSi10MgCu alloy
    hardness
    solid solution treatment
    Opis:
    The impact of small addition of zirconium in hypoeutectic commercial AlSi10MgCu alloys on their mechanical properties (hardness) in as cast and thermally treated conditions was investigated. Small addition of zirconium does not change significantly the as cast and heat-treated microstructure of investigated alloys except to reduce the SDAS and grain size of primary α-aluminium phases. Addition of zirconium up to 0.14 wt. percentage increases the hardness of investigated alloys in as cast conditions. The increase in the hardness of samples after various solid solution times can correlate very well with the formation of small needle like coherent Al3Zr particles.
    Źródło:
    Archives of Metallurgy and Materials; 2019, 64, 3; 1107-1110
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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