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    Wyświetlanie 1-5 z 5
    Tytuł:
    The Effect of Artificial Ageing on the Mechanical Properties of the EN AW 2017 Alloy
    Autorzy:
    Jirounkova, Klara
    Vozka, Jan
    Cais, Jaromir
    Powiązania:
    https://bibliotekanauki.pl/articles/102052.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    aluminium alloy
    heat treatment
    aging
    mechanical properties
    stop aluminium
    obróbka cieplna
    starzenie
    właściwości mechaniczne
    Opis:
    This paper deals with different types of artificial ageing and its effect upon the mechanical properties of an aluminium alloy. For the purposes of this research, the EN AW 2017 alloy was subjected to different types of heat treatment. These samples were subjected to different analyses. The results of hardness measurements (HB and HV) revealed the highest values of the non‑heat treated sample. The static tensile stress test proved the highest ductility of the heat treated samples. Overall, the best were revealed for the sample artificially aged at 160°C.
    Źródło:
    Advances in Science and Technology. Research Journal; 2020, 14, 1; 75-80
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modifications ALSI7MG0.3 alloys trough CA, SR and SB
    Autorzy:
    Cais, Jaromír
    Lysoňková, Irena
    Kraus, Pavel
    Powiązania:
    https://bibliotekanauki.pl/articles/102369.pdf
    Data publikacji:
    2018
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    Al-Si alloy
    modifier
    microstructure
    EDX analysis
    stop Al-Si
    modyfikator
    mikrostruktura
    analiza EDX
    Opis:
    This article deals with examing the effect of modifier on changes in microstructure of the alloy AlSi7Mg0.3. The content of the experiment was to examine the effect of addition of calcium, stroncium, and antimony to change the morphology of the eutectic silicon in the alloy type of Al-Si (namely AlSi7Mg0.3). Besides changes in the morphology of eutectic silicon was explored focused on character exlusion modifiers within microstructure of the modified alloy. Examination of the microstructure was realized by scanning electron microscopy and complemented by EDX analysis of the examined samples.
    Źródło:
    Advances in Science and Technology. Research Journal; 2018, 12, 2; 180-187
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of Modifier on the Microstructure of the AlSi10CuNiMn Alloy
    Autorzy:
    Cais, Jaromir
    Heinrich, Jiri
    Jirounkova, Klara
    Powiązania:
    https://bibliotekanauki.pl/articles/103309.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    Al-Si alloy
    microstructure
    modification
    microscopy
    stop Al-Si
    mikrostruktura
    modyfikacja
    mikroskopia
    Opis:
    This paper deals with different types of modifiers and their effect on the microstructure of the Al-Si alloy. For the purposes of this research, strontium, antimony and calcium were used as the modifiers of the AlSi10CuNiMn alloy. Unmodified alloy was cast in order to be compared with the alloy modified by different modifiers in various concentrations. The results of this research were analysed via light and electron microscopy.
    Źródło:
    Advances in Science and Technology. Research Journal; 2020, 14, 2; 13-18
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative Aspects of Nanoparticles in Relation to Extending Shelf-Life of Molds
    Autorzy:
    Novotný, Jan
    Lysoňková, Irena
    Cais, Jaromír
    Michna, Štefan
    Powiązania:
    https://bibliotekanauki.pl/articles/103252.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    nanoparticles
    engineering practice
    nanocomposites
    aluminum alloys
    nanocząstki
    praktyka inżynierska
    nanokompozyty
    stopy aluminium
    Opis:
    The paper deals with the problems of nanoparticles and nanomaterials applied in technical practice. The research on the use of nanoparticles has at present a great development. Their potential has a large of use. Particles of nano-size, i.e. below 100 nm exhibit other properties than larger particles and because this area is being explored in all possible sectors. The effect of adding these particles at different mechanical properties in coatings on various surfaces neat (separated on a band saw, milling work, ground roughness 800 and 80 polished) dependent on quality prepared nanoparticles by different conditions of milling. One of the possibilities for an extension of the duty cycle of tyre production molds is applying a protective coating. Due to the functionality of the desktop is needed a very thin coating layer. A suitable type of coating is thus a PTFE coating, which prolongs the service life of hundreds of percent. Better possibility how to improve an extension of the duty cycle is the addition of the coating titanium dioxide particles into the PTFE medium. This is the way how to create nanocomposite directly on the mold surface.
    Źródło:
    Advances in Science and Technology. Research Journal; 2019, 13, 1; 110-115
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analyses of calcium influence on the AlSi9CuMnNi alloy
    Autorzy:
    Náprstková, Nataša
    Kraus, Pavel
    Cais, Jaromír
    Stančeková, Dana
    Miturska, Izabela
    Powiązania:
    https://bibliotekanauki.pl/articles/957898.pdf
    Data publikacji:
    2018
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    alloy
    modification
    calcium
    machining
    chip
    stop
    modyfikacja
    wapń
    obróbka
    żeton
    Opis:
    Treatment of metal alloys is one of the ways to affect the properties of the material. The article describes an experiment realized at FPTM UJEP when was experimentally studied the influence of alloys AlSi9CuMnNi calcium modification on some of its properties. The alloy was modified with various amounts of calcium and subsequently machining. Also hardness was measured in the resulting alloys. Machining was performed under certain cutting conditions. After machining the obtained chip was evaluated. Chip was evaluated for its shape, length and amount of chips per 100 g. Devices in FPTM laboratories were used to prepare experimental casts and to evaluate hardness and chips, like the melting furnace LAC K70/13, hardness tester Ernst AT 250X or microscope Olympus SZX 10. Experimental quantities of calcium was 0.05, 0.1 and 0.15 wt. %. Presented experiments are part of the extensive research undertaken at Faculty of Production Technologies and Management at Jan Evangelista Purkyně University in Ústí nad Labem.
    Źródło:
    Advances in Science and Technology. Research Journal; 2018, 12, 3; 32-38
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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