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    Wyświetlanie 1-4 z 4
    Tytuł:
    The Assessment of Modification of High-Zinc Aluminium Alloy
    Autorzy:
    Zyska, A.
    Konopka, Z.
    Łągiewka, M.
    Nadolski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/380248.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    aluminium alloys
    inoculation
    solidification
    mechanical properties
    stopy aluminium
    krzepnięcie
    właściwości mechaniczne
    Opis:
    The results of examinations of the influence of titanium-boron inoculant on the solidification, the microstructure, and the mechanical properties of AlZn20 alloy are presented. The examinations were carried out for specimens cast both of the non-modified and the inoculated alloy. There were assessed changes in the alloy overcooling during the first stage of solidification due to the nuclei-forming influence of the inoculant. The results of quantitative metallographic measurements concerning the refinement of the grain structure of casting produced in sand moulds are presented. The cooling rate sensitivity of the alloy was proved by revealing changes in morphology of the α-phase primary crystals. Differences in mechanical properties resulting from the applied casting method and optional inoculation were evaluated.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 2; 53-56
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimization of squeeze parameters and modification of AlSi7Mg alloy
    Autorzy:
    Zyska, A.
    Konopka, Z.
    Łągiewka, M.
    Nadolski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/381007.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    mechanical properties
    Al alloy
    squeeze casting technology
    modification
    właściwości mechaniczne
    stop Al
    technologia prasowania
    modyfikacja
    Opis:
    The paper present the examination results concerning mechanical properties of castings made of AlSi7MG alloy in correlation both with the most significant squeeze casting parameters and with the modification treatment. Experiments were planned and held according to the 23 factorial design. The regression equations describing the influence of the squeeze pressure, the mould temperature, and the quantity of strontium modifier on the strength and elongation of the examined alloy were obtained. It was found that the main factor controlling the strength increase is the squeeze pressure, while the plasticity (A5) of the alloy is affected most advantageously by modification. The application of modification treatment in squeeze casting technology enables for production of the slab-type castings made of AlSi7Mg alloy exhibiting strength at the level of 230 MPa and elongation exceeding 14%.
    Źródło:
    Archives of Foundry Engineering; 2013, 13, 2; 113-116
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Influence of Home Scrap on Mechanical Properties of MgAl9Zn1 Alloy Castings
    Autorzy:
    Konopka, Z.
    Chojnacki, A. C.
    Łągiewka, M.
    Zyska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/382859.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innovative foundry technologies
    innovative foundry materials
    automation in foundry
    robotics in foundry
    environmental protection
    mechanical properties
    magnesium alloys
    innowacyjne technologie odlewnicze
    innowacyjne materiały odlewnicze
    automatyzacja w odlewni
    robotyka w odlewni
    ochrona środowiska
    właściwości mechaniczne
    stopy magnezu
    Opis:
    The work presents the results of examinations concerning the influence of various amounts of home scrap additions on the properties of castings made of MgAl9Zn1 alloy. The fraction of home scrap in the metal charge ranged from 0 to 100%. Castings were pressure cast by means of the hot-chamber pressure die casting machine under the industrial conditions in one of the domestic foundries. The examinations consisted in the determination of the following properties: tensile strength Rm, yield strength Rp0.2, and the unit elongation A5, all being measured during the static tensile test. Also the hardness measurements were taken by the Brinell method. It was found that the mechanical properties (mainly the strength properties) are being improved up to the home scrap fraction of 50%. Their values were increased by about 30% over this range. Further rise in the home scrap content, however, brought a definite decrease in these properties. The unit elongation A5 exhibited continual decrease with an increase in the home scrap fraction in the metal charge. A large growth of hardness was noticed for the home scrap fraction increasing up to the value of 50%. Further increasing the home scrap percentage, however, did not result in a significant rise of the hardness value any more.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 2; 39-42
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Correlations Between Arrangement of Reinforcing Particles and Mechanical Properties in Pressure Die Cast AlSi11-SiC Composites
    Autorzy:
    Konopka, Z.
    Pasieka, A.
    Łągiewka, M.
    Nadolski, M.
    Zyska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/380134.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    pressure die casting
    metal matrix composites (MMCs)
    aluminium alloys
    structure
    mechanical properties
    odlewnictwo ciśnieniowe
    kompozyty metalowe (MMC)
    stopy aluminium
    struktura
    właściwości mechaniczne
    Opis:
    The work presents the investigation results concerning the structure of composite pressure die castings with AlSi11 alloy matrix reinforced with SiC particles. Examination has been held for composites containing 10 and 20 volume percent of SiC particles. The arrangement of the reinforcing particles within the matrix has been qualitatively assessed in specimens cut out of the castings. The index of distribution was determined on the basis of particle count in elementary measuring fields. The tensile strength, the yield point and elongation of the obtained composite were measured. Composite castings were produced at various values of the piston velocity in the second stage of injection, diverse intensification pressure values, and various injection gate width values. The regression equation describing the change of the considered arrangement particles index and mechanical properties were found as a function of the pressure die casting parameters. The infuence of particle arrangement in composite matrix on mechanical properties these material was examined and the functions of correlations between values were obtained. The conclusion gives the analysis and the interpretation of the obtained results.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 2; 31-36
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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